Добірка наукової літератури з теми "Heating engineering calculation"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Heating engineering calculation".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Статті в журналах з теми "Heating engineering calculation"
1
Melekhin, Andrei. "Development of engineering calculator for heating systems." E3S Web of Conferences 263 (2021): 04001. http://dx.doi.org/10.1051/e3sconf/202126304001.
Повний текст джерелаАнотація:
The author has developed an engineering calculator for calculating the heat flow for heating buildings according to the enlarged parameters of the object. The algorithm of the calculator is based on the method of determining the amount of heat energy and heat carrier in water systems of municipal heat supply. The author carried out a systematic analysis of thermal loads on heating of buildings in Russia according to the data of implemented building projects. With this in mind, new coefficients a, n were calculated to determine the specific heating characteristics of the building for newly constructed buildings. The algorithm for calculating the heating of buildings according to the enlarged parameters of the object is corrected. The calculation algorithm is implemented in the software
2
Meng, Da Wei, Bo Qun Zhang, and Xiao Xuan Shi. "Calculation of Temperature Rise for High-Voltage Induction Motor with Compact Type in Starting Process." Applied Mechanics and Materials 705 (December 2014): 232–36. http://dx.doi.org/10.4028/www.scientific.net/amm.705.232.
Повний текст джерелаАнотація:
Medium-sized high-voltage motor’s starter temperature rising is difficult to accurately calculate. In this paper, the heating and cooling process at the start of the motor windings are analyzed, from the perspective of practical engineering, according to the actual structure of the motor, the motor drag establish a network model and dynamic thermal network diagrams, calculating the electrical heating and cooling conditions. This paper took consideration of the influence to the motor heating from current and impedance changes in the process of starting. Taking the times as the step size and basing on the raw heat and heat capacity of each period to calculate the motor temperature rise of the motor windings. For example the motor of YJKK500-4, 2500kW motor, calculating the motor winding temperature raise, the calculation which achieved with the experimental results, the calculation method has the engineering practicality.
3
Huo, Lin, and Tao Yang. "The Rapid Engineering Aero-Heating Calculation Method for Hypersonic Vehicles." Applied Mechanics and Materials 775 (July 2015): 59–67. http://dx.doi.org/10.4028/www.scientific.net/amm.775.59.
Повний текст джерелаАнотація:
The rapid engineering aero-heating calculation method for hypersonic vehicles is established for the question of computational efficiency during conceptual design stage. First the pressure distribution along vehicle’s surface is calculated by modified Newtonian theory. Secondly, the streamline along the surface is calculated with Newtonian steepest decent concept. Then by using reference enthalpy method, the heat flux on the surface is given. Finally, the heat flux on the surfaces of blunted cone, lifting body and wave-rider vehicle is calculated The analysis result shows the method used in this paper is fit for hypersonic vehicles, and can satisfies the aero-heating calculation during conceptual design stage in both efficiency and accuracy.
4
CHULKOV, Alexander A., Yury S. VYTCHIKOV, and Igor V. KUDINOV. "RESEARCH OF HEATING APPLIANCE DYNAMIC PROPERTIES." Urban construction and architecture 6, no. 4 (December 15, 2016): 44–48. http://dx.doi.org/10.17673/vestnik.2016.04.8.
Повний текст джерелаАнотація:
The results of thermotechnical testing of aluminium, iron and bimetal heaters are presented. Heating capacity of appliances is determined by experiments, heat time is found by experimental and theoretical methods. Engineering method of dynamic properties calculation is proposed. Results analysis shows the differences between heat time and estimated heat time. In this regard correction index is added in calculation formula.
5
Deliiski, Nencho, Anton Geffert, Jarmila Geffertova, Veselin Brezin, and Izabela Radkova. "Engineering Approach for Computation of the Energy Consumption Needed for Defrosting and Subsequent Heating of Frozen Wood Chips." Key Engineering Materials 688 (April 2016): 50–56. http://dx.doi.org/10.4028/www.scientific.net/kem.688.50.
Повний текст джерелаАнотація:
An engineering approach for the calculation of the specific mass energy consumption, which is needed for defrosting and the subsequent heating of the frozen wood chips above the hydroscopic range, (in kWh·t-1), has been suggested. Equations for easy calculation of have been derived, depending on the wood moisture content u, on the fiber saturation points of the wood species at 20 °C and at –2 °C (i.e. at 293.15 K and at 271.15 K), and respectively, on the initial chips’ temperature, T0 , and on the final temperature of the heated after their defrosting chips, T1.For the calculation of the according to the suggested approach and equations a software program has been prepared in MS Excel 2010. With the help of the program calculations have been carried out for the determination of the energy consumption , which is needed for defrosting and subsequent heating of oak, acacia, beech, and poplar frozen chips with moisture content in the range from u = 0.4 kg·kg-1 to u = 1.0 kg·kg-1, initial temperature t0 = –20 °C and t0 = –10 °C until reaching of the chips‘ mass temperature of t1 = 80 °C, t1 = 100 °C, and t1 = 120 °C at the end of the heating.
6
Tokarev, Vyacheslav V., and Zoya I. Shalaginova. "Development of operating conditions of district heating systems with quality regulation." E3S Web of Conferences 102 (2019): 03011. http://dx.doi.org/10.1051/e3sconf/201910203011.
Повний текст джерелаАнотація:
District heating systems (DHS) have developed as large-scale and very complex engineering structures. In different countries of the world, are used various strategies of their regulation: by quality, by quantity, by combining of quality and quantity. The purpose of the operating conditions development is to find such conditions under which the supply of consumers with the required amount of heat by given quality while observing all the technical and technological requirements. The task of calculating the DHS conditions is to find the distribution of flows, pressures and temperatures across all elements of the design scheme for a given topology, hydraulic and thermal characteristics of its elements and boundary conditions. There are two types of calculation of DHS conditions: adjustment and verification. In article presented DHS operating regime development technology. The “Angara-HN” software can perform the whole complex of calculations.
7
VYTCHIKOV, Yury S., Mikhail Ye SAPAREV, and Vladislav A. GOLIKOV. "USE OF MONOLITHIC FOAM CONCRETE IN ENCLOSING STRUCTURES OF BUILDINGS AND STRUCTURES WITH VARIABLE THERMAL CONDITIONS." Urban construction and architecture 8, no. 4 (December 15, 2018): 10–14. http://dx.doi.org/10.17673/vestnik.2018.04.2.
Повний текст джерелаАнотація:
This article considers the features of the use of monolithic foam concrete as a heat-insulating layer in the building enveloping structures of buildings operated under intermitt ent heating conditions. To assess the eff ectiveness of the use of monolithic foam concrete in building enveloping structures, a thermal engineering calculation of the outer wall, insulated with the use of monolithic foam concrete, was carried out. Based on the calculations carried out by the authors, graphs of the dependence of the heating time of multilayered enclosing structures on the thickness of the heat-insulating layer and the reduced resistance to heat transfer of the structure were obtained. The optimum range of thicknesses and densities of monolithic foam concrete for thermal insulation of external walls of buildings, operated in conditions of intermitt ent heating, is off ered. This calculation also showed that the use of foam concrete as a heater from the inside of the outer wall can reduce the load on the foundation of the building.
8
Pakere, Ieva, Dace Lauka, and Dagnija Blumberga. "Estimation of Carbon Emission Reduction from Upgrading the DH Network to the 4th Generation. Multivariate Linear Regression Model." Environmental and Climate Technologies 23, no. 2 (November 1, 2019): 64–73. http://dx.doi.org/10.2478/rtuect-2019-0055.
Повний текст джерелаАнотація:
Abstract The district heating (DH) system consists of three basic elements – a heat source, heating network and heat consumers. All of these elements have a definite role in the overall development of the DH system. The transition to 4th generation DH (4GDH) involves changes in each of those elements that interact with each other. Therefore, various related processes form the potential energy savings and reduction of CO2 emissions when introducing 4GDH as whole system in all elements. To estimate the potential outcome from such projects it requires complex engineering calculations, which is not always possible without relevant expertise. The article describes a novel simplified methodology for evaluating the potential GHG emission reduction when implementing 4GDH. Thus, it is proposed to use a simplified calculation formula from linear regression model for the calculation of CO2 reduction.
9
Tuomas, Edvardas, and Saulius Neverbickas. "METHODOLOGY OF THE PRIMARY DATA RECONSTRUCTION OF SINGLE PIPE HEATING SYSTEMS/VIENVAMZDŽIŲ ŠILDYMO SISTEMŲ PIRMINIŲ DUOMENŲ NUSTATYMO METODIKA." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 5, no. 5 (October 31, 1999): 318–22. http://dx.doi.org/10.3846/13921525.1999.10531482.
Повний текст джерелаАнотація:
The majority of dwellings in Lithuania are situated in blocks of flats. The dwellings were built after World War II and they are heated by single pipe central heating systems, connected to district heating. The dwellers are not quite satisfied with such a heating system and try to improve it, but do that in a wrong way, by increasing the surface of radiators. Such means lead to violation of thermal regime and comfort conditions for other dwellers. There exists sometimes the necessity of reconstructing premises and together—the heating system. During the reconstruction the primary heat fluxes from radiators should be known, but very often such data are lost and only the size of radiators (number of sections) are known. To reconstruct the required primary data for single pipe systems is complicated because the temperatures of inlet and outlet water for radiators are unknown. In this article the methodology is proposed how to perform the calculations leading to the required data. The aim of calculations is the establishment of heat fluxes from each radiator connected to the riser. Heat flux from radiator can be calculated according the formula (1) but the complex coefficient is unknown. It could be found from formulae (2) but some magnitudes are unknown. According to the proposed methodology the values of unknown magnitudes are taken approximately and calculations are performed with iterations. In such a way the flow rate of water in riser is established from formula (3), which is the same for each radiator (the property of single pipe system). From formulas (3) and (4) an equation is produced (5), and is used for calculations of unknown temperatures. The equation (6) is used for calculation of heat fluxes from radiators. To carry out the above-mentioned calculations without computer practically is impossible due to many cycles of iteration. The programme was prepared to make easy all these calculations. The scheme of algorithm of programme is given in Fig 1. An example of calculation is given in this article. Calculations were fulfilled by newly created programme. The riser chosen for calculation is shown in Fig 2. The results of calculation are given in Table 1. The table shows that according to the proposed methodology the programme based on it can be used for reconstruction of primary data of single pipe heating systems successfully.
10
Drojetzki, Lawrence, and Janusz Wojtkowiak. "Ceiling mounted radiant panels – calculations of heat output in heating and cooling application." E3S Web of Conferences 44 (2018): 00035. http://dx.doi.org/10.1051/e3sconf/20184400035.
Повний текст джерелаАнотація:
This paper describes calculations of heat exchange between a radiant heating and cooling ceiling panel and the surrounding space. The calculations were created on the basis of empirical equations published in literature and experimental research of radiant ceiling panels carried out at the Institute of Environmental Engineering of the Poznan University of Technology. Changes in heating or cooling output vs. air and panel surface temperature difference were investigated. Based on the calculation results, the influence of the colour, gloss and shape of the panels surface on the heating or cooling capacity was indicated. Performed calculations show that the proportion of radiation in the whole heat exchange for the matte black ceiling panel reach 50% for cooling and 75% for heating mode for the considered temperatures. Comparing two rectangular, square and circular panels with the same area, it has been shown that the shape of the surface affects the heat exchange due to the difference in convectional flows in the boundary layers for different cases. Possible explanations of the discrepancies between the theoretical model and experimental results were presented.
Дисертації з теми "Heating engineering calculation"
1
Tillman, Johan. "En energistudie över Fengerfors bruk : Kartläggning och förslag till effektiviseringsåtgärder hos byggnader av industrikaraktär." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-7898.
Повний текст джерелаАнотація:
I slutet av 1900-talet började man inse konsekvenserna av att förlita sig på icke förnyelsebara energikällor för uppvärmning. Priserna steg i höjden och man valde ofta att byta ut sin oljepanna mot el vilket för tillfället var en lönsam lösning. I och med prisstegringen som skett det senaste decenniet har betydelsen av energieffektivt byggande framstått som allt mer tydlig. Detta innebär att många äldre byggnader ofta kan ha mycket dåliga värmeisolerade egenskaper eftersom både energipriser och byggnormer var lågt ställda vid tiden för uppförning. Uppdragsgivarna till arbetet är en ideell ekonomisk förening vid namn Not Quite med sin bas i Fengerfors bruk, Åmål. De har framfört att de har problem med för höga uppvärmningskostnader och svårigheter med att hålla önskad inneluftstemperatur i deras lokaler. Objekten som beskrivs är av industrikaraktär och har tidigare tillhört ett pappersbruk som lades ned år 1979. Byggnaderna är numera kulturminnesmärkta. Syftet med arbetet har varit att åt uppdragsgivarna utföra en kartläggning där energianvändning och potentiella effektiviseringsåtgärder relaterat till de aktuella objekten analyseras. Detta för att uppnå tillfredsställande uppvärmning samtidigt som energiförbrukningen om möjligt kan reduceras. Kostnadseffektiviteten för de specifikt föreslagna åtgärdsalternativen skall också analyseras. Målet med arbetet har varit att med hjälp av simulering utföra kartläggningen där energianvändning, dimensionerande värmeeffektbehov samt potentiella effektiviseringsåtgärder analyseras. Åtgärderna bestod i huvudsak av tilläggsisolering, tätning, intermittent drift, värmeåtervinning samt byte av fönster. Kostnadseffektiviteten analyserades genom en livscykelkostnadskalkyl utifrån värmekällorna ved, pellets och luft-/luftvärmepump. Slutsatsen är att föreslagna åtgärdsalternativ reducerar energiförbrukningen i avsevärd omfattning samtidigt som en tillfredsställande inneluftstemperatur erhålls. Objekten har efter att effektiviseringsåtgärderna tillämpats uppnått en energiförbrukning likvärdig med dagens normalbyggnader i Sverige. Livscykelkostnadskalkylen visar att nuvärdet för respektive åtgärdsalternativ i samtliga relevanta ekonomiska framtidsscenarier leder till stora besparingar. Arbetet har också visat att betydelsen av tillfredsställande diskretisering är oerhört signifikativ i denna typ av simulering.In the late 1900s society began to realize the consequences of relying on non-renewable energy sources for heating. Prices were increasing heavily and because of that people often chose to replace their oil boiler with electricity which at the time was a viable option. With the rise in prices that has occurred over the past decade the importance of energy efficient measures seemed increasingly clear. With that said many older buildings often have poor thermal properties since both energy prices and construction standards were considerably lower back then. The client Not Quite is a nonprofit association based in Fengerfors mill, Åmål. They have expressed dissatisfaction over increasing heating costs combined with problems getting the desired thermal comfort related to their premises. The objects described are of industrial nature and has previously been used to a paper mill which closed in 1979. The buildings are now classified as part of a cultural monument. The intention of this dissertation has been to map the energy use and to evaluate appropriate efficiency measures related to the specific objects. This includes getting the demanded thermal comfort in combination with possibly reducing the energy consumption. The cost-effectiveness of proposed efficiency measures will also be evaluated. The objective of this dissertation has been to through the use of simulation identify the energy consumption, required thermal input and potential energy efficiency measures. The efficiency measures consisted mainly of adding insulation, air sealing, intermittent heating, heat recovery and window replacements. Cost-effectiveness was evaluated through a life cycle cost analysis with the different heat sources of wood, pellets and air source heat pumps. The conclusion has been that the proposed efficiency options related to each object reduces energy consumption to a considerable extent, while an adequate heating is achieved. The objects have through these measures obtained just as good energy consumption rates as standard considered buildings in Sweden. The life cycle cost analysis shows us that the present value of the proposed efficiency measures in all economic case scenarios results in great cost savings. It has also been shown that a satisfactory discretization of building elements is very important in this type of simulation.
2
Gustafsson, Sebastian, and Gösta Jansson. "Avvikelser mellan projekterad och verifierad energiprestanda för nyproducerade lågenergibyggnader : En studie av AB Bostäders svårigheter att leva upp till uppsatta energikrav i deras nybyggda flerbostadshus." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12805.
Повний текст джерелаАнотація:
EUs direktiv för energiprestanda innebär att alla nya byggnader från och med 2021 ska vara nära-nollenergibyggnader. De stundande kraven innebär att beställare måste skärpa sina energikrav vid upphandling av flerbostadshus. Vidare spelar lågenergibyggnader som koncept en viktig roll för att nå hållbar utveckling och det är av högsta vikt att kommande byggprojekt blir effektiva både i byggprocess och vidare i driftskedet. Nybyggnation av lågenergibyggnader har visat sig problematisk i många aspekter, där den uppmätta energianvändningen i många fall visat sig väsentligt högre än vad som projekterats. I och med den ny byggpraxis med bättre isolation, lufttäthet och ventilation med återvinning blir tappvarmvatten och hushållsel de största energiposterna i en byggnads energibalans. Syftet med arbetet är att konkretisera problemen som finns för nyproducerade flerbostadshus med energikrav för lågenergibyggnader. Utifrån det har fokus lagts på två byggnader som AB Bostäder låtit bygga – båda projekterade för att uppnå lågenergikrav. Likt befarat visar Examensarbetet att det är svårt att härleda problemet till specifika poster. Byggprocessen i sig kan vara en bidragande faktor, där tidsbrist, bristfällig kommunikation och okunskap kring ny byggpraxis är förekommande i en bransch som har svårt att hinna med den efterfrågade volymen av nybyggnation. Vad gäller specifika felkällor till försämrad energiprestanda stödjer vår rapport tidigare publicerade rapporter i ämnet där bristfällig indata vid energiberäkningar, byggprocessens inverkan, oaktsamhet av VVC-förluster och betydelsen av brukare har belysts.The energy performance of buildings directive means that all new buildings must be nearly zero energy buildings by 31 December 2020. The current requirements mean that constructor companies must tighten their energy requirements when procuring multi-family houses. Lowenergy buildings as concepts play an important role in achieving sustainable development, and it is of the utmost importance that future construction projects become effective both in the construction process and on further operation. New construction of low-energy buildings has proved to be quite problematic in many aspects, where the measured energy performance in many cases proved to be significantly higher than projected. With the new building practice with better insulation, air tightness and ventilation with recycling – hot water supply and household appliances become the largest energy posts in a building's energy balance. The purpose of this master thesis is to concretize the problems that exist for newly produced multi-family houses with energy requirements for low-energy buildings. Based on this, focus has been on two building that AB Bostäder Borås recently has built – both built to achieve low energy requirements. As expected, this master thesis shows the difficulty to deduce the problem to specific aspects. The construction process itself may be the source of error, where time shortages, inadequate communication and lack of knowledge concerning low energy buildings are present in an industry with difficulties catching up with the demanded volume of new construction. Regarding specific sources of vulnerability to energy performance, our report supports previously published reports where the lack of input data for energy calculations, the impact of the construction process, negligence of losses due to recirculation of hot water and the importance of user behaviour have been highlighted.
3
Andersson, J. Christer. "Rock Mass Response to Coupled Mechanical Thermal Loading : Äspö Pillar Stability Experiment, Sweden." Doctoral thesis, KTH, Jord- och bergmekanik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4287.
Повний текст джерелаАнотація:
The geological disposal of nuclear waste, in underground openings and the long-term performance of these openings demand a detailed understanding of fundamental rock mechanics. A full scale field experiment: Äspö Pillar Stability Experiment was conducted at a depth of 450 m in sparsely fractured granitic rock to examine the rock mass response between two deposition holes. An oval shaped tunnel was excavated parallel to the σ3 direction to provide access to the experiment and also provide elevated stress magnitudes in the floor. In the tunnel floor two 1.75-m diameter 6-m deep boreholes were excavated so that a 1-m thick pillar was created between them. In one of the holes a confinement pressure of 700 kPa was applied and in the other displacement transducers were installed. The pillar volume was monitored by an Acoustic Emission System. Spatially distributed thermocouples were used to monitor the temperature development as the pillar was heated by electrical heaters. The excavation-induced stress together with the thermal-induced stress was sufficient to cause the wall of the open borehole to yield. The temperature-induced stress was increased slowly to enable detailed studies of the rock mass yielding process. Once the rock mass loading response was observed, the rock mass was unloaded using a de-stress slotting technique. This thesis focuses on the in-situ study of the rock mass response to coupled mechanical thermal loading and thermal-mechanical unloading. The experiment, its design, monitoring and observations are thoroughly described. An estimate of the yielding strength of the rock mass is presented and compared with laboratory test and results from other rock mass conditions reported elsewhere in the open literature. General conclusions about the effect of the confining pressure and the observations from the unloading of the pillar are also presented. Important findings are that the yielding strength of the rock mass has been successfully determined, low confinement pressures significantly affects the onset of yielding, the primary mode of fracture initiation and propagation is extensional, no significant time dependency of the yielding process was observed. The unloading studies also indicated that what appeared to be shear bands likely was a propagating zone of extensile failure that weakened the rock so that displacements in the shear direction could occur.QC 20100622
4
Hammarström, Anton. "Utvärdering av potential för värmeåtervinning från laborationsutrustning : Möjligheten att använda en kylvattenbassäng som termiskt säsongslager." Thesis, Mittuniversitetet, Avdelningen för kemiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-34309.
Повний текст джерелаАнотація:
HETA utbildningar i Härnösand har ett ångkraftverk för undervisningssyfte som kyls ner med vatten från en underjordisk bassäng på cirka 329 m³. Syftet med detta examensarbete har varit att undersöka hur bassängen med spillvärmen från kraftverket kan användas som ett säsongslager i kombination med en befintlig 7,8 kW värmepump för att värma upp maskinhallen i deras laboratoriebyggnad. Ett kalkylark skapades i Microsoft Excel för att kunna genomföra beräkningarna. Då mätdata saknades skapades ett simulerat scenario baserat på temperaturstatistik och körschema för kraftverket från år 2017. Transmissionsförluster beräknades för bassängen och maskinhallen. För bassängen användes mestadels observationsdata och kännedom hos personalen, medan maskinhallens isolering i huvudsak fick uppskattas efter byggår. Resultatet blev att värmepumpen med aktuellt körschema kunde täcka cirka 45 % av maskinhallens årliga uppvärmningsbehov. Av de 276 GJ som tillfördes genom kylning av ångkraftverket under ett år beräknades endast 2,7 % kunna utnyttjas till uppvärmning av maskinhallen, på grund av för lite isolering i bassängen. De största begränsningarna för högre täckning och större nyttjande av spillvärmen bedömdes vara placeringen i tid av kraftverkets körningar, och värmepumpens effekt. Om körningarna skulle förläggas i huvudsak till november–april och värmepumpen ersättas med en på 10 kW, skulle 74 % av värmebehovet kunna täckas och över 18 % av spillvärmen utnyttjas. Andra saker som förbättrad isolering i bassängen och större vattenvolym bedömdes också kunna förbättra bassängens kapacitet som energilager.HETA Education in Härnösand has a steam power plant for educational purposes which is cooled with water from a 329 m³ underground basin. The purpose of this thesis has been to examine how the basin with the waste heat can be used as seasonal thermal energy storage with an existing 7.8 kW heat pump in order to heat the machine room of their lab building. A spreadsheet was created in Microsoft Excel in order to carry out the calculations. As no measurement data was available, a simulated scenario was created based on temperature statistics and the operating schedule for the power plant from the year 2017. Transmission losses were calculated for the basin and the machine room. For the basin, mostly observational data and knowledge among the staff were used, while the insulation for the machine room mainly had to be estimated based on the construction year. The result was that the heat pump, with the current operating schedule, could cover around 45% of the yearly heating demand of the machine room. Of the 276 GJ that were added through cooling of the power plant during a year, according to calculations, only 2,7% could be used for heating the machine hall, due to lacking insulation in the basin. The greatest limitations for achieving a higher heating coverage and a greater usage of the waste heat were assessed to be the placement in time of the power plant runs, and the effect of the heat pump. If the runs would be placed mainly in November–April, and the heat pump replaced with a 10 kW one, around 74% of the heating demand could be covered and 18 % of the waste heat used. Other things, such as increased insulation in the basin and larger water volume were also assessed to be able to increase the capacity of the basin as heat storage.
5
Соломко, Павло Анатолійович. "Аналіз шляхів підвищення енергоефективності корпусу № 2 Запорізької станції переливання крові". Магістерська робота, 2022. https://dspace.znu.edu.ua/jspui/handle/12345/6554.
Повний текст джерелаАнотація:
Соломко П. А. Аналіз шляхів підвищення енергоефективності корпусу № 2 Запорізької станції переливання крові : кваліфікаційна робота магістра спеціальності 144 "Теплоенергетика" / наук. керівник М. Ю. Бердишев. Запоріжжя : ЗНУ, 2022. 93 с.UA : Робота викладена на 93 сторінках друкованого тексту, містить23 таблиці,18 рисунків.Перелік посилань включає 45 джерела з них на іноземній мові 0. У кваліфікаційній роботі магістра розглядалися характеристики опису об’єкта, опис технічного стану огороджувальних конструкцій, система опалення, система освітлення, система охолодження, кондиціювання, вентиляції, утеплення будівлі, вибір утеплювача. Зроблений теплотехнічний розрахунок огороджуючих конструкцій, розрахунок тепловтрат будівлі. Аналіз споживання паливо-енергетичних ресурсів. Витрати на теплову енергію, гарячу воду, холодну воду. Розрахунок економії від впровадження системи автоматичного регулювання опалення будівлі. Розрахунок річних витрат на теплову енергію. Розрахунок капітальних вкладень.
EN : The work is presented on 93 pages of printed text, contains23 tables,18 figures. The list of references includes 45 sources, 0 of them in foreign language. The master's qualification work considered the characteristics of the description of the object, the description of the technical condition of fencing structures, heating system, lighting system, cooling system, air conditioning, ventilation, building insulation, the choice of insulation. The thermotechnical calculation of enclosing constructions, calculation of heat losses of the building is made. Analysis of fuel and energy resources consumption. Costs for thermal energy, hot water, cold water. Calculation of savings from the introduction of automatic heating control of the building. Calculation of annual costs for thermal energy. Calculation of capital investments.
6
Костенко, Сергій Олександрович. "Аналіз енергоспоживання Запорізької станції переливання крові". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/3516.
Повний текст джерелаАнотація:
Костенко С. О. Аналіз енергоспоживання Запорізької станції переливання крові : кваліфікаційна робота магістра спеціальності 144 "Теплоенергетика" / наук. керівник М. Ю. Бердишев. Запоріжжя : ЗНУ, 2020.107 с.UA : Робота викладена на 107 сторінок друкованого тексту, містить 17 таблиць,17 рисунків. Перелік посилань включає 45 джерел з них на іноземній мові 0. У кваліфікаційній роботі проведений аналіз енергоспоживання Запороізької станції переливання крові. Виконано розрахунок втрат теплоти через окремі зовнішні захищаючі конструкції. Знайдено засоби для термомодернізації будівлі. Доведено, що термомодернізація буде ефективною, актуальною та з підтверженням в техніко-економічному обґрунтуванні проектних рішень.
EN : The work is presented on 107 pages of printed text, contains17 tables,17 figures. The list of references includes 45 sources, 0 of them in foreign language. In the qualification work the analysis of energy consumption of the Zaporozhye blood transfusion station is carried out. The calculation of heat losses through separate external protective structures is performed. Means for thermal modernization of the building were found. It is proved that thermal modernization will be effective, relevant and confirmed in the feasibility study of design decisions.
Книги з теми "Heating engineering calculation"
1
Escudier, Marcel. Introduction to Engineering Fluid Mechanics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198719878.001.0001.
Повний текст джерелаАнотація:
Turbojet and turbofan engines, rocket motors, road vehicles, aircraft, pumps, compressors, and turbines are examples of machines which require a knowledge of fluid mechanics for their design. The aim of this undergraduate-level textbook is to introduce the physical concepts and conservation laws which underlie the subject of fluid mechanics and show how they can be applied to practical engineering problems. The first ten chapters are concerned with fluid properties, dimensional analysis, the pressure variation in a fluid at rest (hydrostatics) and the associated forces on submerged surfaces, the relationship between pressure and velocity in the absence of viscosity, and fluid flow through straight pipes and bends. The examples used to illustrate the application of this introductory material include the calculation of rocket-motor thrust, jet-engine thrust, the reaction force required to restrain a pipe bend or junction, and the power generated by a hydraulic turbine. Compressible-gas flow is then dealt with, including flow through nozzles, normal and oblique shock waves, centred expansion fans, pipe flow with friction or wall heating, and flow through axial-flow turbomachinery blading. The fundamental Navier-Stokes equations are then derived from first principles, and examples given of their application to pipe and channel flows and to boundary layers. The final chapter is concerned with turbulent flow. Throughout the book the importance of dimensions and dimensional analysis is stressed. A historical perspective is provided by an appendix which gives brief biographical information about those engineers and scientists whose names are associated with key developments in fluid mechanics.
2
Pedersen, Curtis O. Cooling and Heating Load Calculations for Buildings (Dekker Mechanical Engineering). CRC, 2007.
Знайти повний текст джерелаЧастини книг з теми "Heating engineering calculation"
1
Shao, Qing, Fu-ting Bao, and Chao-feng Liu. "Aerodynamic heating calculation by lattice Boltzmann equation." In Advances in Energy Science and Equipment Engineering II, 1915–22. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315116174-203.
Повний текст джерела
2
Lin, Z., L. Fu, and Z. Zhao. "Calculation method of off-design power program for extraction and heating of turbine." In Frontiers of Energy and Environmental Engineering, 121–25. CRC Press, 2012. http://dx.doi.org/10.1201/b13718-29.
Повний текст джерела
3
Shendryk, Vira, Olha Shulyma, and Yuliia Parfenenko. "The Topicality and the Peculiarities of the Renewable Energy Sources Integration into the Ukrainian Power Grids and the Heating System." In Advances in Environmental Engineering and Green Technologies, 162–92. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8222-1.ch007.
Повний текст джерелаАнотація:
The chapter proposes to approach the problem in the following ways: assess the problems in the existing power system, analyze the current state of the RES using, and determine the existing ways of computer modeling of the grid. The chapter also discusses the topicality of renewable energy use in the construction of distribution grids and the ability to model their work. It explores issues including current research attempts to identify the existing methods, which can be applied in the Decision Support System (DSS) for calculation and evaluation RES. The problem of making decisions for energy saving in district heating requires such measures as energy audit and planning. These activities require monitoring the current energy consumption in real time.
4
Tsybulskyi, Vitalii. "IMPROVEMENT OF CALCULATION METHOD OF ROAD PAVEMENT EMBANKMENT ON THE APPROACHES TO ROAD BRIDGES." In Integration of traditional and innovation processes of development of modern science. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-021-6-41.
Повний текст джерелаАнотація:
The laws of unsaturated and capillary movement of water in soils are analyzed, which are complex and insufficiently studied, but significantly affect the condition of the ground. Experience in the design and construction of the subsoil has shown that during the excavation works can significantly change the conditions of soils and their water-thermal regime. Therefore, the characteristics of soils used in stability calculations should be determined taking into account the subsequent condition of the soil in the conditions of occurrence, as well as the possible change of these conditions during construction and maintenance. One of the urgent tasks is to improve the methods of regulating the water-thermal regime of roads. By changing the conditions of its course or the type of water-thermal regime itself, significant successes can be achieved in improving the maintenance of roads, engineering and transport facilities. Dangerous effect of these factors on the embankment of the ground is manifested in the formation of wetting, wetting of the soil and layers of pavement, resulting in reduced density, strength of soils, subsidence, swelling and loss of continuity due to cracking. As a result, the strength of the road structure, the flatness of the carriageway, the durability of the pavement and the adhesion of the wheels to the roadway are reduced. The most dangerous for roads are moisture accumulation, freezing, thawing of the ground, intensive heating and intensive cooling of the layers of pavement. The analysis of regularities of formation of a water-thermal regime of a ground and its regulation at the expense of the device of optimum capillary-interrupting layers is carried out. The laws of soil moisture when raising capillary water showed that when the layer of the embankment with a high coefficient of impregnation is dehydrated over the layer with a lower coefficient, the speed of moving capillary water into the upper soil layers drops sharply. This fall occurs as a result of changes in the relationship between the driving forces of the menisci and the forces of resistance of capillary water in the soil. The process of unsaturated movement of water in the soil is determined by the combination of many factors that characterize the capillary system of the soil. The calculation uses complex indicators of soil water movement conditions, which are established experimentally for each variety and soil density at optimal humidity, as well as water filtration coefficients in the soil. To establish the relationship between these experimental data and the required values that determine the capillary system of the soil, the filtration of water in the soil was considered. Determining the optimal capillary system of the soil and establishing the unstable distribution of own capillary water in the structures of high embankments will ensure the strength of approaches to road bridges. The method of calculating the determination of the optimal composition of the road layers taking into account the processes of water-thermal regime and capillary movement of water has been improved. The algorithm of calculation in the program Microsoft Excel for selection of optimum structure of a ground cloth of a high embankment on approaches to automobile bridges is offered.
5
"Technology of Heat and Moisture Regeneration for Ventilation Systems." In Technology Development for Adsorptive Heat Energy Converters, 174–222. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4432-7.ch006.
Повний текст джерелаАнотація:
The chapter is focused on technology of heat and moisture regeneration for ventilation systems. In the first sub-division recent progress in adsorptive technologies for air dehumidification, heating and conditioning is analyzed. In the next sub-divisions results of original researches of authors on adsorptive heat and moisture regeneration are given. The design of adsorptive heat-moisture regenerator for ventilation systems is shown. Its operation and the results of field tests are described. The technology of regeneration of low-potential heat and moisture by composite sorbent ‘silica gel – sodium sulphate' is suggested. Experimental plots of temperature, absolute and relative humidity at the inlet and the outlet of the apparatus and between cassettes with the composite are given. Correlation of flows switch-over time, airflow rate and temperature drop is stated. The relationships temperature efficiency factor vs. dimensionless temperature drop and moisture efficiency factor vs. absolute humidity dimensionless drop are derived with fair accuracy for engineering calculation. Ability of purposeful modification of the above-mentioned characteristics within broad ranges by changing the half-cycle time, the size of the granules of the adsorbent and its amount is revealed. The mathematical model and algorithm for determining the basic parameters of adsorptive regenerator operating processes are developed. The proposed algorithm involves calculating the volume of air passed through the layer of adsorptive heat-storage material, the concentration of water in the airflow at the outlet of the regenerator, the adsorption, the heat of adsorption, the final temperature of the cold air, the air temperature after mixing the cold air from the street and the warm air in the room at the warm end of the regenerator during inflow, calculation of the final concentration of water in the flow at the cold end of the regenerator, the volume of air passing through the layer of heat-accumulating material, adsorption and heat of adsorption, the final temperature of the air at the cold end of the regenerator, the air temperature after mixing of the cold air from the street and the warm air from the room at the cold end of regenerator during outflow, determining the temperature efficiency coefficient, summarized adsorption and maximal adsorption time. The correlation of air temperatures near the warm and cold end of the regenerator, as well as the temperature efficiency factors calculated according to the proposed algorithm and obtained by experimental way is confirmed. The mathematical modeling of the processes of operation of adsorption regenerators based on composites ‘silica gel – sodium sulphate' and ‘sodium acetate' in the conditions of the typical ventilation system of residential premises is carried out. The dependences of the temperature efficiency factor vs. the time of switching air flows and the velocity of air flow, as well as the temperatures of external and internal air under stationary conditions are shown. An optimal composition of composite adsorbents is stated to be 20% of silica gel and 80% of salt, that is, sodium sulphate or sodium acetate. Due to higher value of maximal adsorption composite ‘silica gel – Na2SO4' is shown to be required in half as much as compared with ‘silica gel – CH3COONa'. The results of the research can be used in the development of energy-efficient ventilation systems and devices for residential and warehouse premises.
6
Vinogradov, Alexander, Anatoly Sopov, Vadim Bolshev, and Alina Vinogradova. "Gainful Utilization of Excess Heat From Power Transformers." In Handbook of Research on Smart Computing for Renewable Energy and Agro-Engineering, 132–62. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1216-6.ch006.
Повний текст джерелаАнотація:
The study analyzes the various methods of gainful utilization of excess heat from power transformers. The ways to reduce heat loss inside the tank power transformer are found. The potential amount of heat emitted by power transformers of different capacities is calculated. New ways of combining the functions of electric transformation and heating in a power transformer are described. A system has been developed to use the excess heat of power transformers in the agricultural power systems. There are the structural and schematic diagrams of the system and a method for calculating its main elements. An improved design of the power transformer cooling system has been developed to combine the functions of electric transformation and heating. Experiments to verify the effectiveness of decisions are described. A feasibility study of the implementation of the developed system was carried out.
7
Pierzchalski, Michał. "Single-Family Residential Building Energy Retrofit." In Advances in Civil and Industrial Engineering, 248–74. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-4105-9.ch011.
Повний текст джерелаАнотація:
This chapter is a case study for the energy retrofit of an existing single-family residential building. The main assumption of the project was creating a model example for an energy retrofit with the aim of achieving the nZEB standard in existing residential building. The discussed building was built between the 1960s and the 1970s. The building was built using mixed technologies. The flooring on the ground floor was replaced; the foundation, external walls, and roof were thermally insulated. The windows and doors were replaced with higher parameter ones. Moreover, a modern biomass boiler was installed in the building along with the installation of a mechanical bidirectional ventilation unit with a heat recovery. Before the renovation, the building used about 133.4 GJ final energy for heating annually. After the renovation, the building uses about 8.89 GJ annually. The author describes all the stages of the renovation, the technical solutions, the calculations of economic and environmental benefits of the conducted renovations.
8
Artyukhov, Artem, Nadiia Artyukhova, and Jan Krmela. "Computer Simulation of the Aerodisperse Systems Hydrodynamics in Granulation and Drying Apparatus." In Process Analysis, Design, and Intensification in Microfluidics and Chemical Engineering, 277–321. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7138-4.ch010.
Повний текст джерелаАнотація:
The chapter presents validation of the selection criteria for the construction of the granulation and drying equipment. New forms of the organization of the flows motion in a fluidized bed regime are offered. The steering mechanisms for the motion and the residence time of the disperse phase in a workspace of the apparatus are described. The results of the simulation of the hydrodynamic conditions for the motion of the directional gas flow and the two-phase aerodisperse system are presented. Based on the simulation results, various constructions of the apparatus components are offered. The well-minded construction of the workspace of the apparatus helps to achieve optimized consumption of the heating agent and the minimal residence time of the disperse phase in the apparatus. The computer simulation allowed the authors to offer an algorithm of the optimization calculations of the granulation and drying equipment. New constructive solutions to perform the granulation and the drying processes in the devices with a directional fluidized bed are offered.
Тези доповідей конференцій з теми "Heating engineering calculation"
1
Tarasov, Fedor E., Ekaterina O. Marinkova, Sergey A. Bychkov, and Vasilyi E. Frizen. "Calculation of inductor for stamp tools heating systems." In 2017 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus). IEEE, 2017. http://dx.doi.org/10.1109/eiconrus.2017.7910878.
Повний текст джерела
2
Najafiyazdi, Alireza. "An Engineering Inviscid-Reacting Boundary Layer Method for Calculation of Hypersonic Aerodynamic Heating." In 43rd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-510.
Повний текст джерела
3
Kuvaldin, A. B., M. A. Fedin, N. S. Nekrasova, A. O. Kuleschov, O. A. Polyakov, and S. S. Kondrashov. "Development of Software for the Automated Calculation Performance Induction Heating Gradient Blanks." In 2020 V International Conference on Information Technologies in Engineering Education ( Inforino ). IEEE, 2020. http://dx.doi.org/10.1109/inforino48376.2020.9111838.
Повний текст джерела
4
Biryulin, V. I., A. N. Gorlov, and D. V. Kudelina. "Calculation of Cable Lines Insulation Heating with the Account of High Harmonics Currents." In 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2018. http://dx.doi.org/10.1109/icieam.2018.8728688.
Повний текст джерела
5
Sun, Dexing, Haibo Chen, and Jili Zhang. "Analysis and Calculation of Heat Transfer from Low-Temperature Hot Water Floor Radiant-Heating System." In Architectural Engineering Conference (AEI) 2003. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40699(2003)25.
Повний текст джерела
6
Malikov, German, Vladimir Lisienko, Yuri Malikov, Yaroslav Chudnovsky, and Raymond Viskanta. "A Coupled Solution Procedure for Zonal Radiative and Convective Heat Transfer in 3-D Enclosures With Blockages and Screens." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43154.
Повний текст джерелаАнотація:
A new 3D method of modeling convective-diffusive (CDT) heat transfer and zonal radiation transfer (ZRT) employing different calculation schemes and multi-scale curvilinear grids is presented. The coarse multiblock unstructured grid calculation domain allows use of a conservative and an accurate zonal radiation transfer method with only modest computational effort that requires only a small fraction of total processor CPU time. The blockages (e.g., bars in a furnace) and screens have their own very coarse grids. This reduces the time for defining their intersections with rays. Structured fine grid is used for convective-diffusive (CDT) calculations. The main difficulty (i.e., in coupling between CDT and ZRT numerical computations) is successfully overcome using a simple algorithm. The zonal radiation transfer method is based on a fast algorithm for calculating view factors and total exchange areas. The present approach is fast, efficient and accurate for gas fired furnaces and complex internal configurations of the work pieces with many blockages and screens. The utility of the method is demonstrated by calculating the heating of a hundred round metal bars arranged in a continuous natural gas fired furnace. Good agreement between calculations and industrial experiments is demonstrated.
7
Zheng, Jiajia, Zhaochun Li, and Jiong Wang. "Heating of Long-Stroke Magnetorheological Fluid Damper." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62604.
Повний текст джерелаАнотація:
Magnetorhelogical (MR) dampers are gradually used in military devices for shock isolation and civil structures for suppressing earthquake-induced shaking and wind-induced vibrations because of their mechanical simplicity, high dynamic range, low power requirements, large force capacity and robustness. Since MR fluid dampers are energy-dissipating device, the issues of heat generation and dissipation is important. In this study, phenomenon of viscous heating and consequent temperature increase in a long-stroke MR damper are presented. In addition, a theoretical model is developed which predicts the temperature increase in the long-stroke MR damper. This model is solved numerically and a new coupling method was proposed to analyze the electromagnetic-thermal coupling problem on the basis of the mechanism of coupled field. Aim at the high frequency of piston head moving back and forth, as well as the changing current, the simulation model is established. The results show that the temperature effect on the damping force is significant and provide a theoretical basis and calculation method for the design and analysis of long-stroke MR damper.
8
Dong, Wei, and H. T. Fan. "Finite Volume TVD Algorithm for Computation of Aerodynamic Heating." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0722.
Повний текст джерелаАнотація:
Abstract In the design of high speed vehicle, in order to ensure safety of flight, its surface pressure, density of heat flow distributions must be given accurately. Many computational schemes based on either the inviscid Euler equations or various forms of the Navier-Stokes equations can give out satisfied results in the predictions of pressure distributions. However computations of skin friction and in addition heat transfer particularly at high speeds have been a source of considerable difficulty. This paper adopts the finite volume method to solve the conservative type of Navier-Stokes equations simulating supersonic and hypersonic flow, for the aerodynamic heating problem. For the calculation of inviscous flow fluxes passing every surface element, the second order precision TVD scheme developed by Harten is adopted, the viscous flow fluxes are treated with centered differences of upwinded/downwinded averaged flow varibles. Numerical experiments show that the proposed schemes are quite robust and accurate.
9
Hou, Xiaofan, Zhongning Sun, Guangming Fan, Jiguo Tang, and Jiqiang Su. "Flow Characteristics in an Open Two-Phase Natural Circulation Loop." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30549.
Повний текст джерелаАнотація:
The flow characteristics of an open single-tube (Φ38×2000 mm), two-phase natural circulation (TPNC) loop was investigated, under the condition of constant saturated temperature at the atmosphere (99±0.5°C) at the inlet of heating tube. Five typical circulation modes are observed in the range of experiment heating power (from 2.8 kW to 34.8kW), namely intermittent flashing oscillation, geysering and flashing induced oscillation, flashing boiling eruption and flashing induced oscillation, sustained flashing and steady two-phase flow. It was shown that flashing and geysering or boiling eruption are predominant factors influencing flow characteristics. Moreover, a calculation model is developed to investigate the static flow characteristics of the TPNC system. The calculation results show a good agreement with the experiments. In addition, the calculation results show that the static flow excursion phenomenon may occurs in the open TPNC system, under the higher heating powers.
10
Bing, Wei, and Li Li. "Optimization for Heating System Schemes Based on GRA Method." In ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/es2008-54080.
Повний текст джерелаАнотація:
In China, the overall economical performances of heating systems are not very high, there are still some problems of high energy consumption, high gas emission and low heat utilization. The energy conversation and emission reduction are two most important things. The option of the heating system schemes is the key to improve such situation. An optimal heating scheme will be a good beginning to the whole heating system. In this paper, the GRA (Grey Relation Analysis) method is introduced and used, and with the example of a heating district, the most used and upcoming used heating schemes are listed, calculated and compared by using the method of GRA. The option of a heating system scheme is a typical multi-objective decision-making problem. The schemes are the district boiler heating system (including gas-fired, oil-fired, and coal-fired boilers), solar energy heat pump system and combined heating and power system etc. In the process of optimization calculation, the aspects of energy saving, economics benefit, environment benefit and social benefit are concerned about, and the initial cost, operating cost, employment life, environment influence and system reliability are taken into account. According to the calculation results, combined heating and power system is proposed to be optimal heating system scheme.