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

Archives of Thermodynamics

Jakub KupeckiCorresponding authorFuel Cell Department, Institute of Power Engineering, Augustowka 36, 02-981 Warszawa, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Krzysztof BadydaInstitute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warszawa, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Fuel Cell Department, Institute of Power Engineering, Augustowka 36, 02-981 Warszawa, Poland;Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warszawa, Poland

关键词: Keywords: Plate fin;    Heat exchanger;    Micro-CHP;    SOFC;    Modeling;   

DOI  :  10.2478/aoter-2013-0026

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

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.

【 授权许可】

Unknown