Relevant bibliographies by topics / Air heater leakage

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Air heater leakage'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Air heater leakage"

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Tong, Ying, Wei Zhong, Yan Ling Wu, and Shui Guang Tong. "The Study on Heat Transfer Model and Algorithm of Multi-Sectional Regenerative Air Heater in Power Plant Boiler Based on Analytical Method." Applied Mechanics and Materials 448-453 (October 2013): 3229–33. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3229.

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Tri-sectional regenerative air heater is used widely because of its compactness and better performance. Study on the matching analytical calculation method of heat transfer is rarely carried out because of the complicated heat transfer process. This paper developed a model to solve the heat transfer calculation of multi-sectional regenerative air heaters, which usually have several layers. Then we designed the computational procedure to carry out the model. One example of a tri-sectional regenerative air heater with hot layer and cold layer shows the effectiveness of the algorithm, and the res
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Zhao, Zhen Ning, Jing Jing Wang, Zhen Zhou Zhao, and Qing Feng Zhang. "Investigation of Exhaust Gas Temperature Correction Methods for the Change of Air Inlet Temperature." Advanced Materials Research 586 (November 2012): 342–48. http://dx.doi.org/10.4028/www.scientific.net/amr.586.342.

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The exhaust gas temperature correction for the change of air inlet temperature is the most significant correction for boiler performance test. However, in ASME and China GB standard, the regulations of the correction formulas are different, which brings about some misunderstanding in actual use. In this paper, the correction formulas are derived and analyzed. What’s more, the application conditions are summed up and described as follows. Firstly, the top and side of the air heater must be in good sealing ability, for which the air leakage can be ignored. Secondly, the air inlet temperature mus
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S, Rinto Muhaimin, and Abdul Ghofur. "ANALISIS PERFORMA PRIMARY AIR HEATER (PAH) PLTU ASAM ASAM UNIT I – KALIMANTAN SELATAN." JTAM ROTARY 1, no. 2 (2019): 173. http://dx.doi.org/10.20527/jtam_rotary.v1i2.1747.

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Power plan has an important role in the electricity supply bussiness, one of them is PLTU Asam Asam which is Unit Pelaksana Pembangkitan Asam Asam. By using fuel coal fired type, this work continously to generate maximum power in generating electricity. In terms working to have maximum power continuously in boiler, Boiler have equipment Primary Air Heater (PAH) to repairing the efficiency. To get best performance Primary Air Fan (PAH) is doing routine maintenance.The Effect is routine maintenance for repairing, abrasive and corrosive material Primary Air Fan (PAH) to be air leakage. This final
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Jassim, R. K., B. A. Habeebullah, and A. S. Habeebullah. "Exergy analysis of carryover leakage irreversibilities of a power plant regenerative air heater." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 218, no. 1 (2004): 23–32. http://dx.doi.org/10.1243/095765004322847062.

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Zaki, M. Faza Ghani, and Abdul Ghofur. "ANALISA EFEKTIVITAS HEAT TRANSFER SAH PLTU DENGAN METODE ASME 4.0 dan 4.3." JTAM ROTARY 2, no. 1 (2020): 39. http://dx.doi.org/10.20527/jtam_rotary.v2i1.2003.

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Pemanas udara adalah salah satu peralatan tambahan yang sangat penting dalam penggunaan perpindahan panas dalam boiler, di mana peralatan ini berfungsi untuk memanaskan udara untuk pembakaran dengan menggunakan panas dari sisa gas panas dari pembakaran sebelum dikirim ke cerobong asap. Untuk menjaga kinerja pemanas udara, maka analisis efektivitas perpindahan panas pada pemanas udara dilakukan dengan uji kinerja menggunakan metode ASME PTC 4.0 dan ASME PTC 4.3. Pada data commissioning, SAH unit 1 memiliki efisiensi sebesar 58,69%. Namun, dari hasil analisis penelitian perpindahan panas di Seco
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Zhang, Qing Feng, Zhen Xin Wu, and Zhen Ning Zhao. "Analysis of Exhausting Flue Gas Temperature Abnormal Accompanied with the Boiler Load Changing." Advanced Materials Research 805-806 (September 2013): 1836–42. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.1836.

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Based on the heat-transfer principle of air pre-heater, the influence mode of the changes of the air flow, the flue gas flow, the air leakage in different locations, to the temperature of the hot air and the exhausting gas was researched. The problem of a pulverized coal fired boiler, No.2, of a Thermal Power Plant, which the deviation of exhausting flue gas temperature increased to an abnormal extend when the boiler load rise up quickly was analyzed, the fault position and fault reason were located exactly, and the fault was eradicated by equipment maintenance at last. The results of this stu
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Wu, Yi Min. "Anti-Freezing through Drainage Ensured by Heating with Double Thermal Resources for Construction Joints of Tunnels in Cold Area." Advanced Materials Research 168-170 (December 2010): 2648–53. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.2648.

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A new anti-freezing method for construction joints in tunnels is put forward through effective drainage ensured by heating with warm air or ribbon heater. The heating system is intelligently controlled according to the monitoring and analysis of the surface temperature of the secondary lining. This method is characterized as the following: (1) preventing leakage without pressure increase is realized through effective drainage at the back of secondary lining with special drainable channels; (2) alternative heating resources including warm air and electrical energy are offered to heat the region
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Lin, Jium Ming, and Cheng Hung Lin. "A Novel RFID-Based Thermal Convection Accelerometer with Heater and Thermal Piles Deposited by E-Gun Focused on Mixing Powders of Metals." Applied Mechanics and Materials 364 (August 2013): 262–66. http://dx.doi.org/10.4028/www.scientific.net/amm.364.262.

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This paper proposes an innovated method to integrate an active RFID tag with a thermal convection accelerometer with heater and thermal piles deposited on a flexible substrate by E-gun, thus it is a wireless sensor for easy usage in many fields. The other advantages of the new device are as: (1) The thermal conductivity (λ148W/(mK)) of the traditional Si is about 25 times of the proposed polyimide substrate (λ6-0.17W/(mK)), thus the power leakage through the substrate is reduced. (2) The heaters and the thermal piles are deposited by E-gun focused on a target of mixing powders of metals on the
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Yuliarto, Brian, Mardiana Silvia, Muhammad Iqbal, and Nugraha. "Fabrication of LP Gas Leakage Detector Systems Based on Modified Nanostructured ZnO Thin Film." Advanced Materials Research 364 (October 2011): 206–10. http://dx.doi.org/10.4028/www.scientific.net/amr.364.206.

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The liquid petroleum (LP) gas leakage detector was successfully fabricated using modified nanostructured ZnO thin film as the sensitive layer. The detector consists of ZnO sensitive layer, a heater, a comparator, a transistor, an LED and a buzzer. The detector has the switch system where the comparator can change the current through the LED and buzzers when the LP gas is detected. The ZnO thin films were fabricated by sol gel method using chemical bath deposition technique at moderate temperature on an alumina substrate with electrode contacts. This sensors system allows us to produce LP gas s
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Zhou, Yong Yan, Xiao Cui Guo, Li Li, and Zhi Ping Zhu. "Causes Analysis and Treatment Measures for Excess SiO2 Content in a 300MW Unit Boiler Water." Advanced Materials Research 361-363 (October 2011): 1859–62. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.1859.

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According to the characteristics of silicon in water, analysis is implemented for the excess SiO2 content in a 300MW unit boiler water. Serious excess SiO2 content in the economizer inlet water and boiler water is caused by high-pressure heater leakage. In addition, SiO2 content increases with the raising feedwater temperature, because colloidal silicon solubility increases with the raising feedwater temperature. Colloidal silicon in water is induced by condenser tiny leakage. High-pressure heater plugging must be handled. Improving activated charcoal filters washing and boiler blow-off freque
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Dissertations / Theses on the topic "Air heater leakage"

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Younes, Chadi. "Developing an Enhanced Model for Combined Heat and Air Infiltration Energy Simulation." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/743.

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The need for efficient, sustainable, and planned utilization of resources is ever more critical. In the U.S. alone, buildings consume 34.8 Quadrillion (1015) BTU of energy annually at a cost of $1.4 Trillion. Of this energy 58% is utilized for heating and air conditioning. Several building energy analysis tools have been developed to assess energy demands and lifecycle energy costs in buildings. Such analyses are also essential for an efficient HVAC design that overcomes the pitfalls of an under/over-designed system. DOE-2 is among the most widely known full building energy analysis models. It
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Peens, Gert Petrus. "Evaluation of upstream and downstream process parameters on electrostatic precipitator performance / Gert Petrus Peens." Thesis, 2013. http://hdl.handle.net/10394/11932.

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New emission legislation regarding air pollution control, as instructed by the Department of Environmental Affairs (DEA) to Eskom Generation Power Stations, implies a particulate emission limit of 100 mg/Nm3 for all existing power stations by 2015 and 50 mg/Nm3 for all new and existing power stations by the year 2020. Some of Eskom’s power stations which are equipped with Electrostatic Precipitators (ESP’s) were not designed for this stringent legislation. It is also experienced that ESP’s and coal quality in Eskom have deteriorated over time, resulting in the performance of the ESP’s not meet
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Chong-YanYan and 顏崇晏. "Numerical Simulation of Flow Field and Heat Transfer on Air Leakage Test Furnace." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6jynrz.

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碩士<br>國立成功大學<br>航空太空工程學系<br>104<br>This paper is to investigate the flow field and temperature distribution on an air leakage furnace by numerical simulations. The performance on temperature distribution in an air leakage furnace under different turbines and heating devices are studied. The ANSYS FLUENT 14.5 with SIMPLE scheme is used in this study. 　First two test cases, three-dimensional cavity flow and three-dimensional natural convection, are preformed to make sure the numerical results in flow field, heat transfer, and heat convection are reliable. Then the flow field and temperature dis
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Books on the topic "Air heater leakage"

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Virtanen, Markku. Thermal coupling of leakage air and heat flows in buildings and in building components: Development and application of numerical methods. Technical Research Centre of Finland, 1993.

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Book chapters on the topic "Air heater leakage"

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Mitchell, D. R., Y. X. Tao, and R. W. Besant. "Heat and Moisture Transfer in Fiberglass Insulation under Air Leakage and Frosting Conditions." In Thermal Conductivity 23. CRC Press, 2021. http://dx.doi.org/10.1201/9781003210719-38.

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Janssens, A. "Methodology for measuring infiltration heat recovery for concentrated air leakage." In Research in Building Physics. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078852-105.

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Karimipanah, Taghi. "Some Aspects of HVAC Design in Energy Renovation of Buildings." In Urban Transition - Perspectives on Urban Systems and Environments [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98824.

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It is well-known fact that air conditioning systems are responsible for a significant part of all energy systems in building energy usage. In EU buildings, the building HVAC systems account for ca 50% of the energy consumed. In the U.S., air-conditioning accounts on average about 12% of residential energy expenditures. The proper choice of air distribution systems and sustainable energy sources to drive the electrical components have a vital impact to achieve the best requirements for indoor climate including, hygienical, thermal, and reasonable energy-saving goals. The building energy system components that have a considerable impact on the demand for final energy in the building are design, outdoor environment conditions, HVAC systems, water consumption, electrical appliances, indoor thermal comfort, and indoor human activities. For calculation of the energy balance in a building, we need to consider the total energy flows in and out from the building including ventilation heat losses, the perimeters transmission heat loses, solar radiation, internal heat from occupants and appliances, space and domestic water heating, air leakage, and sewage heat losses. However, it is a difficult task to handle the above time-dependent parameters therefore an energy simulation program will always be used. This chapter aims to assess the role of ventilation and air-conditioning of buildings through the sustainability approaches and some of the existing renewable energy-based methods of HVAC systems are presented. This comprehensive review has been shown that using the new air distribution systems in combination with renewable energy sources are key factors to improve the HVAC performance and move toward Nearly Zero Carbon Buildings (NZCB).
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Conference papers on the topic "Air heater leakage"

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Baukal, Charles E., and Wesley R. Bussman. "Process Heater Air Infiltration." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39988.

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Process heaters are among the largest energy consumers in industry. Many of them were built years ago and often are not well sealed which leads to excessive air infiltration. Air leaks may be caused by cracks in the wall, by sight ports that are not properly sealed or may even be left open, failure to close air registers for burners that are out of service, improper sealing of penetrations through the heater walls, and by excessive draft levels in the heater. These leaks reduce energy efficiency and indirectly increase pollution emissions as more fuel must be consumed for a given production ra
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Jassim, Rahim K., Badr A. Habeebullah, and Abdulraof S. Habeebullah. "Exergy Analysis of Carryover Leakage Irreversibilities of a Power Plant Regenerative Air Heater." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26102.

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Energy recovery devices can have substantial impact on process efficiency and their relevance to the problem of conservation of energy resources is generally recognised to be beyond dispute. One type of such a device, which is commonly used in fossil fired and air conditioning systems, is the rotary regenerator in which a stream of hot waste gas exchanges heat with fresh atmospheric air through the intermediate agency of a rotating matrix. As there are gas streams involved in the heat transfer and mixing processes, then there are irreversibilities, or exergy destruction, due to chemical reacti
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Altug, Erdem, Ayşe Ece Yildizcelik, and Burak Birinkulu. "Innovative Air Leakage Test Method for B-Cars." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70123.

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Ford Otosan’s Yeniköy plant, which assembles the Transit Courier and Tourneo Courier, has developed a innovative air leakage test method. Air leakage is not a directly measurable metric by customer, but it can be observed in some different ways such as wind noise, road noise, water ingress, dust intrusion, door closing efforts, and better cooling/heating performance. In order to detect leak point by conventional method is dramatically time consuming, needed to remove trim parts and issues under 11/s could not be detectable. Innovative air leakage test method has been designed by using air heat
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McLaughlin, David C., and Joseph R. Nasal. "Applying the X-Ratio Correction to Calculated Air Heater Efficiency: An Alternate Method." In ASME 2010 Power Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/power2010-27304.

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ASME PTC 4.3 on testing Air Heaters provides guidance for the calculation of gas-side efficiency as a measure of air heater performance. This code also provides for calculation of air heater X-ratio (XR), which is the ratio of the heat capacity (mass flow times specific heat capacity) of the air flowing through the heater to that of the flue gas. The code acknowledges the impact of XR on air heater efficiency, and dictates that the gas temperature leaving the air heater (and hence, air heater efficiency) be corrected for deviation from design XR by the use of “appropriate design correction cur
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Lehmann, Knut, Richard Thomas, Howard Hodson, and Vassilis Stefanis. "Heat Transfer and Aerodynamics of Over-Shroud Leakage Flows in a High-Pressure Turbine." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59531.

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An experimental study has been conducted to investigate the distribution of the convective heat transfer on the shroud of a high pressure turbine blade in a large scale rotating rig. A continuous thin heater foil technique has been adapted and implemented on the turbine shroud. Thermochromic Liquid Crystals were employed for the surface temperature measurements to derive the experimental heat transfer data. The heat transfer is presented on the shroud top surfaces and the three fins. The experiments were conducted for a variety of Reynolds numbers and flow coefficients. The effects of differen
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Jonsson, M., D. Charbonnier, P. Ott, and J. von Wolfersdorf. "Application of the Transient Heater Foil Technique for Heat Transfer and Film Cooling Effectiveness Measurements on a Turbine Vane Endwall." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50451.

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The paper presents an application of the transient heater foil measurement technique using thermochromic liquid crystals (TLC) to endwall heat transfer and film cooling investigations in a transonic turbine vane cascade. The film cooling configuration consists of an upstream slot, representing the leakage flow area between the interface of the combustor and the turbine, and several rows of cylindrical and fan-shaped holes within the passage. With the transient method chosen, the heat transfer and adiabatic film cooling effectiveness distributions can be obtained simultaneously together with th
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Sharma, Himanshu, Veronica Adetola, Laurentiu Marinovici, and Herbert T. Schaef. "Data Driven Approach to Analyzing The Impact of Power Plant Cycling on Air Preheater Degradation and Remaining Useful Life." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59914.

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Abstract Due to the increased penetration of renewable energy generation sources, and fluctuations of the oil and gas prices, modern coal burning power plants deal with increased variability in the demand for power generation. These varying demands result in their intermittent under-capacity operation (cycling). Periodical ramping down and back up to follow the daily power demands causes damages to the plant components reducing its operational life. In this paper we analyze the impact of cycling on a rotary Ljungstrom air preheater (APH) unit installed at a coal fire power plant in the US. An
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Toyoda, Hiroyuki, Tadakatsu Nakajima, Yoshihiro Kondo, Akio Idei, and Shigemasa Sato. "A Design for Loop Thermosyphon Including Effect of Non-Condensable Gas." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44244.

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We have developed a loop thermosyphon for cooling electronics devices. Its cooling performance changes with the ambient temperature and amount of input heating. Especially it deteriorates with non-condensable gas (NCG) increase. NCG leakage of thermosyphon cannot detect below under 10−10 Pa-m3/s, though we have to design the thermosyphon considering these characteristics to provide guaranteed performance for 5–10 years. In this study, the effect of the amount of NCG in each component of a thermosyphon was measured while changing the amount of heater input, and the amount of NCG. As a result, w
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Cho, Junhyun, Hyungki Shin, Jongjae Cho, et al. "Development and Operation of Supercritical Carbon Dioxide Power Cycle Test Loop With Axial Turbo-Generator." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76488.

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In order to overcome reported failure problems of turbomachinery for the supercritical carbon dioxide power cycle induced by the high rotational speed and axial force, an axial impulse-type turbo-generator with a partial admission nozzle was designed and manufactured to reduce the rotational speed and axial force. The turbine wheel part was separated by carbon ring-type mechanical seals to use conventional oillubricated tilting-pad bearings. A simple transcritical cycle using a liquid CO2 pump was constructed to drive the turbogenerator. A 600,000 kcal/h LNG fired thermal oil boiler and 200 RT
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Yang, Dianliang, and Zhenping Feng. "Tip Leakage Flow and Heat Transfer Predictions for Turbine Blades." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27728.

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A numerical study was performed to simulate the tip leakage flow and heat transfer on the first stage rotor blade in GE-E3 engines. Calculations were performed for both flat and squealer blade tips by means of solving Reynolds-averaged N-S equations in conjunction with the k-ω two-equation turbulence model. For squealer tip blades, several cases were considered with five different tip gap-blade span ratios of 0.4%, 0.7%, 1.0%, 1.3%, and 1.6%, and four different groove depth-blade span ratios of 1%, 2%, 3%, and 4%. A linear experimental cascade was calculated first to validate this turbulence m
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