Academic literature on the topic 'Mini-CHP'

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Journal articles on the topic "Mini-CHP"

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Magor, C. A. "Mini CHP." IEE Review 34, no. 7 (1988): 281. http://dx.doi.org/10.1049/ir:19880111.

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Sednin, V. A., and R. S. Ignatovich. "Analysis of the Efficiency of Hydrogen Production Technology at Mini-CHP Plants Using Local Fuelsby Thermochemical Method." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 66, no. 4 (2023): 354–73. http://dx.doi.org/10.21122/1029-7448-2023-66-4-354-373.

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Within the framework of the policy of “decarbonization” of the economy, a technology for hydrogen producing from local fuels (LF) and combustible waste of human activity is proposed as a part of the development of the functionality of heating cycles of energy production. The aim of the present study is to evaluate the energy efficiency of a steam-powered mini-CHP plant operating on local fuels with a thermochemical hydrogen production module. A brief literature review of thermochemical cycles of hydrogen production is presented, and it is shown that hybrid copper-chlorine Cu–Cl cycles are recognized as the most promising. In the Aspen Hysys software environment, a mathematical model of a mini-CHP plant with a five-stage hydrogen production cycle was synthesized, which can later be used as a component in the digital twin. According to the results of the analysis of the mathematical model, it was determined that the specific consumption of electric energy per 1 kg of hydrogen for such a scheme will be 9.11 (kW×h)/kg, which is on average more than five times less than in the production of hydrogen by electrolysis, the rest of the required energy is replaced by thermal one, while the maximum fuel utilization factor of mini-CHP with a hydrogen production module using wood waste as fuel amounted to 83.1 %, including a thermal efficiency of 51.5 %, the efficiency of hydrogen production at the lowest calorific value is 31 %, the electrical efficiency for the supply of electricity to the grid is 0.6 %. For comparison, the maximum fuel utilization of a steam-powered mini-CHP of the same electrical capacity reaches 90.9 %. The expansion of mini-CHP options operating on local fuels by introducing a hydrogen production unit by hybrid thermochemical method into its scheme makes it possible to increase the maneuverability of the station, which implies the possibility of organizing the operation of mini-CHP in accordance with the requirements of thermal consumers and electrical graph-reducing the loads of the power system during the hours of maxima and minima of its consumption by changing the electrical power supply to the network or increasing the power consumption of electricity from the external network to the power required for hydrogen production. In conclusion, the possibility of developing the studied scheme of a mini-CHP operating on local fuels towards further utilization of combustion products in order to generate artificial natural gas, which in this case can be called “green”, is indicated.
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Ignatovich, R. S. "Principles of Organization and Functioning of Mini-CHP Plants Using Local Fuels in Conditions of Hydrogen Energy." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 68, no. 1 (2025): 76–96. https://doi.org/10.21122/1029-7448-2025-68-1-76-96.

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This article discusses the principles of organization and operation of mini-CHP plants on local fuels (LF) to the conditions of hydrogen and carbon-free energy. The analysis of literary sources on the current state of development of mini-CHP plants on LF in the structure of the country's energy balance revealed a number of issues related to their operation and construction that arose after the commissioning of the Belarusian NPP. It is noted that a potential way to develop such energy sources is to switch to multi-purpose product development based on the principles of operation of the energy hub, which will potentially reduce the dependence of the energy source on the operation of the Unified Energy System (UES). The analysis of open literature sources on the potential role of LF in the transition to carbon-free energy was carried out. In this context, the operation of a mini-CHP plant on LF is considered according to two scenarios, viz. recovery of CO2 from combustion products, followed by purification to food grade and sale to direct consumers, as well as changing the operating modes of the energy source by means of the accumulation of excess electrical energy in the form of hydrogen during the operation of a mini-CHP plant in accordance with the thermal load of consumers. Based on archival data from an operating wood chip-fueled mini-CHP with an ORC module that was selected for research as an analog object, an assessment of the economic conditions for the development of mini-CHP plants on LF was made when integrating food-grade CO2 extraction units or for the production and accumulation of hydrogen into their schemes. For food grade carbon dioxide production systems, a functional dependency has been built that allows for a preliminary estimate of the value of the simple payback period when integrated into the scheme. Under the accepted conditions for the study object, the simple payback period obtained using the built dependency was less than 3 years. For systems of accumulation of excess electrical energy in the form of hydrogen, 3 options of the organization of work were considered. Based on the research object, the presence of boundary conditions for the ratio of the minimum and maximum differentiated tariff for the purchase of electric energy of the UES has been determined, under which it is advisable to further consider the economic indicators of the project for integrating a module for accumulating electric energy in the form of hydrogen into the scheme of a mini-CHP plant on LP.
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A.V., Chesnyuk, Dunaeva E.A., Vdovin D.I., and Dunaeva T.Yu. "INTRODUCTION OF ACTIVE ENERGY COMPLEX ON THE BASIS OF MINI CHP CHP." ИННОВАЦИОННЫЕ НАУЧНЫЕ ИССЛЕДОВАНИЯ 2022. 9-1(21) (October 17, 2022): 96–107. https://doi.org/10.5281/zenodo.7216390.

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The article studies the concept of an active energy complex in accordance with the legal documentation. The ways of implementing AEC as an element of distributed generation for industrial consumers are considered. An example of implementation of the described system on a real object is studied. The technical and economic efficiency and prospects for the development of the project are analyzed. When calculating the economic component, a comparison was made of the total costs for the purchase of electricity from the sales campaign and the implementation of own generation. The results from the introduction of AEC at the enterprise were evaluated.
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Mednikov, Aleksandr, Alexey Maksimov, and Elina Tyurina. "Mathematical modeling of mini-CHP based on biomass." E3S Web of Conferences 69 (2018): 02005. http://dx.doi.org/10.1051/e3sconf/20186902005.

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One of the promising directions of small-scale distributed power generation for Russia is the use of biomass. The present work is devoted to studies of an mini-CHP based on multi-stage biomass gasification. Mathematical models of elements and mini-CHP in general based on technological schemes were constructed. The mathematical models were constructed with the software developed at Melentiev Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences. The calculations were made for two sizes of internal combustion engines. Thus, we obtained the values of flow rates, temperatures of heat carriers at various points of flow charts of the plants.
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Ignatovich, R. S., V. A. Sednin, and Ye S. Zuyeva. "Analysis and Optimization of Operating Modes of Mini-CHP on Local Fuels in Conditions of Surplus Electric Power Capacities in the Unified Energy System of Belarus. Part 1." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 67, no. 3 (2024): 241–56. http://dx.doi.org/10.21122/1029-7448-2024-67-3-241-256.

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The paper presents the results of a study to determine the rational structure of mini-CHP (Cogeneration Heat and Power Plant) using local fuels types (LFT) for operation as part of the United Energy System (UES) of Belarus with a surplus of electricity generating capacity and dominance of imported types of energy resources (natural gas and nuclear fuel) in the fuel balance. When optimizing the operating modes of mini-CHPs using LFT and operating in parallel with the UES, which has a significant surplus of electricity generating capacity, it is necessary to separate options for existing stations and options for newly built ones. In the first case, due to the fact that the power of the equipment is known, it is advisable to consider two extreme options, i.e., the operation of the heating unit according to an electrical or thermal load schedule. In this case, in order to maintain the daily consumption traffic it is necessary to provide for the accumulation of thermal or electrical energy, respectively. In the case of new construction, the optimized parameter is the power of the generating equipment, so it is advisable to give preference to the option with the maximum number of hours of use of the rated power. In order to increase the economic attractiveness of mini-CHP, options for developing the structure of mini-CHP using LFT with the transition to multi-generation technologies and adaptation to the existing operating conditions of the UES of Belarus have been considered. The results of an analysis of commercially available technologies for storing excess electrical energy are presented in accordance with current and projected (until 2030) cost and operational indicators. For adapting mini-CHP to operate in the UES in conditions of a surplus of electrical power capacity, an electrical energy storage system using hydrogen as an intermediate energy carrier is of greatest interest. To utilize the excess electrical energy consumption from a mini-CHP with a heating ORC unit during the daily dips, a structural diagram configuration using an alkaline electrolysis module for hydrogen production is proposed. The efficiency of energy storage and use technology is considered depending on the specific energy intensity for various electrical energy storage technologies. The use of the two most energy-intensive energy storage technologies is proposed: accumulation based on electrochemical batte-ries and the “electricity-hydrogen” type. During the study, an analysis of the functioning of the ORC-installation Turboden 14 CHP ORC-installation operating as part of a mini-CHP using LFT was carried out. It was revealed that today the installation operates in a wide range of load changes (from 17 to 87 % of the rated electrical power), while the generation of electrical energy from thermal consumption varied in the range from 0.20 to 0.026 MW/MW. Due to the fact that the ORC installation under study is a component of the energy source with a high installed peak thermal power, in the current state there is no direct correlation between the outside air temperature and the generation power of the ORC installation. This circumstance indicates the need to continue the study of heat load trends to build functional models for short- and medium-term forecasting of heat load depending on the time of day and average hourly outside air temperature, which was implemented in the second part of the work.
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Ignatovich, R. S., V. A. Sednin, and Ye S. Zuyeva. "Analysis and Optimization of Operating Modes of Mini-CHP on Local Fuels in Conditions of Surplus Electric Power Capacities in the Unified Energy System of Belarus. Part 2." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 67, no. 4 (2024): 315–31. http://dx.doi.org/10.21122/1029-7448-2024-67-4-315-331.

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The modern development of power engineering is accompanied by a number of trends, among which one can note the decarbonization of energy production processes; an increase in the share of electricity in the balance of energy consumption due to the deep electrification of industry, transport and heat supply; decentralization of energy sources; an increase in the share of renewable energy sources, including the involvement in the turnover of secondary energy resources and energy from the disposal of organic waste; the development of practice active consumption and prosumerism. For the Republic of Belarus, in which forests are one of the main renewable natural resources and the most important national wealth that ensure the sustainable socio-economic development of the country, its economic, energy, environmental and food security, in the context of decarbonization of the power engineering sector, it is relevant to determine the importance and location of energy generating equipment using local fuels (LF), especially for heating capacities and polygeneration plants. The paper presents the results of a study conducted to evaluate the effectiveness of using mini-CHP plants on LF. The analysis of the archived data of the automated process control system of an operating mini-CHP with a heating ORC unit (Turboden 14 CHP) made it possible to evaluate its maneuverable characteristics with reference to the operating modes of the centralized heat supply system with a predominance of municipal and household heat load in it. It has been shown that the average rate of change in power is 1.5...3.0 % min; respectively, the time to reach rated power under normal conditions exceeds 40 minutes; the time to start the unit from a “cold state” varies from 20 minutes to 2 hours. Therefore the assumption has been confirmed that the studied ORC unit in particular and mini-CHP plants of a similar type as a whole cannot be considered and used as a maneuverable energy source without additional modernization. The conducted numerical study made it possible to show the opportunity of planning effective operating modes of a heating ORC unit in the configuration of the basic thermal circuit of a mini-CHP on LF with the integration of a hydrogen production module into it based on the forecast of the daily schedule of thermal energy consumption and taking into account the dynamics of changes in outdoor air temperature. Conceptual block diagrams of integrated polygeneration systems are also presented; they stand out for the use of hydrogen generation equipment from over-produced electricity during the operation of mini-CHP plants according to a thermal schedule and participation in the coverage of the electric load schedule of the Unified Energy System of Belarus. The use of thermal circuits with thermochemical hydrogen production technology and the operating mode of the ORC unit at rated power is shown to be promising for newly designed mini-CHPs on LF.
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Polei, A. K., and K. A. Shtym. "Efficient operation and reliability issues in operation of mini-CHP." Journal of Physics: Conference Series 1683 (December 2020): 042066. http://dx.doi.org/10.1088/1742-6596/1683/4/042066.

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Petrova, Vera, and Anton Petrov. "On probable starting failure of mini-CHP for reliability assurance." Energy Safety and Energy Economy 4 (August 2018): 48–56. http://dx.doi.org/10.18635/2071-2219-2018-4-48-56.

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Sforzini, Matteo, Gianluigi Nicita, Lorenzo Pastore, Gianluigi Lo Basso, and Livio de Santoli. "How residential CHPs could be integrated in renewable energy communities’ incentive schemes." E3S Web of Conferences 312 (2021): 09003. http://dx.doi.org/10.1051/e3sconf/202131209003.

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The present work aims to investigate the integration into renewable energy communities (REC) schemes of micro and mini- Combined Heat and Power (CHP) plants. In detail, it has been evaluated the minimum self-consumption (SC) share needed to even out the revenues coming from the energy efficiency certificates (EECs). In order to establish a SC based tariff for CHP plants a correlation between SC share and the tariff value has been assessed for different commercial plants. A 70% of SC share has been set as a minimum target, which is related to incentive rates of 53 and 39.5 €/MWh, for mini and micro-CHPs, respectively. These values are about 65% lower than the current tariffs set by ARERA (Italian Regulatory Authority for Energy, Networks and Environment) to reward the renewable energy SC. A real building and two CHP plants have been considered as reference case studies. A dynamic simulation has been carried out in order to analyse the proposed incentive scheme in a real application. Starting from a 3-D BIM model, the energy flows have been calculated over one year period. Finally, it has been demonstrated how a SC based tariff can significantly reduce the share of injected electricity into the grid, also promoting the thermal carrier sharing. In so doing, the renewable energy sources intermittency can be easily mitigated and balanced, avoiding additional burdens on public expenditure.
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Book chapters on the topic "Mini-CHP"

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Oleg Aleksandrovich, Ivanin, Larina Olga Mikhailovna, Lavrenov Vladimir Aleksandrovich, Sinelshchikov Vladimir Aleksandrovich, Sytchev Georgy Aleksandrovich, and Zaichenko Victor Mikhailovich. "Two-Stage Pyrolytic Conversion of Biomass." In Gasification [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96670.

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The widespread adoption of biomass as an energy fuel is hindered by a number of its significant drawbacks, such as low heating value, low ash melting point, low bulk density etc. Technological solutions that allow to fully overcome these shortcomings and ensure high economic performance have not yet been proposed, although there is a significant demand for them. A new technology for thermal processing of biomass into gas fuel, based on the pyrolysis process, has been developed at the Joint Institute for High Temperatures of the Russian Academy of Sciences (JIHT RAS). The degree of energy conversion of the processed raw materials in the proposed technology is about 75%. The gas fuel yield is ∼1.3 m3/kg of biomass, and its heating value, on average, is 11 MJ/m3. The content of the liquid phase in the energy gas obtained by the developed technology is not more than 50 mg/m3. The gas produced by the technology under consideration on average consists of 90% hydrogen and carbon monoxide. According to existing standards, this gas can be used as a fuel for mini-CHP with gas-piston engines. A promising direction for using this gas is the production of liquid motor fuels.
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Conference papers on the topic "Mini-CHP"

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Kazakova, Sofya, and Lyudmila Myshkina. "Analysis of the Requirements for Electrical Networks During the Transformation of a Boiler House into a Mini-CHP." In 2024 International Ural Conference on Electrical Power Engineering (UralCon). IEEE, 2024. http://dx.doi.org/10.1109/uralcon62137.2024.10718992.

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Sosnina, Elena, Olga Masleeva, Evgeny Kryukov, and Natalya Erdili. "Mini CHP Plants Life Cycle Ecological Assessment." In 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe). IEEE, 2020. http://dx.doi.org/10.1109/isgt-europe47291.2020.9248873.

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Dubinin, Alexei. "MINI-CHP PLANT ON THE BASIS OF THE METHANE AIR CONVERSION REACTOR AND ELECTROCHEMICAL GENERATOR." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/4.1/s17.060.

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Meckler, Milton, Lucas B. Hyman, and Kyle A. Landis. "Comparing the Eco-Footprint of On-Site CHP vs. EPGS Systems." 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/es2008-54241.

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This paper compares the Eco-Footprint of three (3) sustainable on-site CHP system alternatives vs. a representative 30% thermally efficient conventionally designed remote electric utility/merchant power generation station (EPGS) serving a 3.5 MW gas turbine installation proposed for a central California university campus. It has been demonstrated (ASHRAE Transactions # DA-07-009) that sustainable on-site cooling-heating-power (CHP) systems for large multi-building projects employing a simplified design approach from that of a conventionally designed mini-utility-type CHP systems employing large volume/footprint, costly, high thermal mass heat-recovery steam-generators (HRSG’s), and 24/7 stationary engineers, can result in lower annual owning and operating costs. The above peer-reviewed 2007 paper illustrated the use of prefabricated, skid-mounted hybrid steam generators with internal headers, fully integrated with a low-pressure drop heat extraction coil (in lieu of a HRSG) located in the combustion gas turbine (CGT) exhaust. Subject CGT extraction coil utilized environmentally benign heat transfer fluid to redistribute extracted CGT exhaust waste to serve campus multi-building annual space cooling, heating, and domestic hot water loads with system thermal balance facilitated via maintenance of a high year-round log-mean-temperature-differential at the CGT extraction coil, also resulting in a lower CGT back-pressure, and significant life-cycle cost savings. This paper also takes an alternative look at the above referenced CHP plant designs for greater operating economies along with a third CHP alternative employing a direct CGT exhaust gas fired 2-stage absorption chiller, and then compare the Eco Footprint and life cycle cost for each of the three CHP options with the above referenced EPGS supplying comparable annual electric power requirements. Finally, using the Eco Footprint of the EPGS as a baseline, the most promising CHP alternative of the above three will also be explored as a potential “cap and trade” candidate to further reduce its first cost and therefore enhance its sustainability from both an energy with greenhouse gas emissions standpoint.
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Hidalgo Rodriguez, Diego I., Lukas Spitalny, Johanna Myrzik, and Martin Braun. "Development of a control strategy for mini CHP plants for an active voltage management in low voltage networks." In 2012 3rd IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe). IEEE, 2012. http://dx.doi.org/10.1109/isgteurope.2012.6465797.

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Galiev, Ilgiz F., Marsel Sh Garifullin, Shamil F. Rakhmankulov, and Danil A. Smirnov. "Stages of Developing an Adaptive Model of a High-Efficiency Gas-Piston Mini-CHP Complex with Energy Storage Units Operating Under Electric and Thermal Load Schedules." In 2024 International Russian Smart Industry Conference (SmartIndustryCon). IEEE, 2024. http://dx.doi.org/10.1109/smartindustrycon61328.2024.10516234.

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Banetta, Stefano, Fabrizio Paganucci, and Romano Giglioli. "System Description and Test Planning for a Combined Heat and Power (CHP) Plant Composed by a Micro Gas Turbine and an Absorption Chiller / Heater." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0102.

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The paper deals with the set-up and preliminary test-planning of an innovative mini cogeneration plant, in which exhaust gases coming from a 45 kWe rated turbogenerator directly feed an absorption chiller / heater with a 170 kWth chilling and a 160 kWth heating capability. Electric power is partly used on site to satisfy the plant auxiliary systems power demands and partly vectorised to the main building of the Engineering Faculty (15 km from the plant site) through the main electric grid. Thermal power is exploited locally for any season air conditioning of laboratory rooms. The paper describes the plant layout and the technical solutions adopted for installation and diagnostic purposes. This plant has been conceived even as a test-bed for Remote Monitoring (RM) and Plant Condition Monitoring (PCM) techniques development and testing. To this purpose dedicated diagnostics have been set up and mathematical models of all the main components are being developed to perform the identification of their operational parameters (e.g. efficiencies) on the basis of the acquired parameters. These are aimed at obtaining both a correct management of the plant and an early diagnosis of malfunctions to achieve the ability of following an on-condition maintenance philosophy to reduce maintenance costs and outage periods.
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