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### Mathematical model of a plate fin heat exchanger operating under solid oxide fuel cell working conditions

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Języki publikacji
EN
Abstrakty
EN
Heat exchangers of different types find application in power systems based on solid oxide fuel cells (SOFC). Compact plate fin heat exchangers are typically found to perfectly fit systems with power output under 5 kWel. Micro-combined heat and power (micro-CHP) units with solid oxide fuel cells can exhibit high electrical and overall efficiencies, exceeding 85%, respectively. These values can be achieved only when high thermal integration of a system is assured. Selection and sizing of heat exchangers play a crucial role and should be done with caution. Moreover, performance of heat exchangers under variable operating conditions can strongly influence efficiency of the complete system. For that reason, it becomes important to develop high fidelity mathematical models allowing evaluation of heat exchangers under modified operating conditions, in high temperature regimes. Prediction of pressure and temperatures drops at the exit of cold and hot sides are important for system-level studies. Paper presents dedicated mathematical model used for evaluation of a plate fin heat exchanger, operating as a part of micro-CHP unit with solid oxide fuel cells.
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EN
PL
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3--21
Opis fizyczny
Bibliogr. 23 poz., il.
Twórcy
autor
• Fuel Cell Department, Institute of Power Engineering, Augustowka 36, 02-981 Warszawa, Poland
autor
• Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warszawa, Poland
Bibliografia
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• [7] US Department of Energy Office of Fossil Energy National Energy Technology Laboratory. Fuel Cell Handbook, 7th Edn. EG G Technical Services, Inc., 2004.
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• [13] KUPECKI J., JEWULSKI J., AND MILEWSKI J.: Clean Energy for Better Environment. Chap. Multi-level Mathematical Modeling of Solid Oxide Fuel Cells, 53-85. Number DOI: 10.5772/50724. Intech. Rijeka, 2012.
• [14] KUPECKI J., BADYDA K.: SOFC-based micro-CHP system as an example of efficient power generation unit. Arch. Termodyn. 32(2011), 3, 33-43.
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• [17] KAYS W.M. AND LONDON A.L.: Compact Heat Exchangers, 3rd Edn. McGraw-Hill, New York 1984.
• [18] INCROPERA F.P. AND DEWITT D.P.: Fundamentals of Heat and Mass Transfer, 3rd Edn. Wiley, New York 1990.
• [19] BADYDA K. AND MILLER A.: Gas Turbines and Power Systems with Gas Turbines. Kaprint Publishing, 2011 (in Polish).
• [20] ANGLART H.: Thermal-hydraulic in Nuclear Systems. Warsaw University of Technology Publishing House, Warsaw 2013.
• [21] CENGEL Y.: Heat and Mass Transfer. Mc Graw Hull, New York 2007.
• [22] MOODY L.F.: Friction factors for pipe flow. Trans. ASME, 66(1944), 8, 671-684.
• [23] GREW K.N. AND CHIU W.K.S.: A review of modeling and simulation techniques across the length scales for the solid oxide fuel cell. J. Power Source 199(2012), 1-13.
Typ dokumentu
Bibliografia