naa a22 4500 510801722 CHVBK 20180411083358.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-013-2514-2 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2514-2 Thermal Management Optimization of a Thermoelectric-Integrated Methanol Evaporator Using a Compact CFD Modeling Approach [Elektronische Daten] [Xin Gao, Min Chen, G. Snyder, Søren Andreasen, Søren Kær] To better manage the magnitude and direction of the heat flux in an exchanger-based methanol evaporator of a fuel cell system, thermoelectric (TE) modules can be deployed as TE heat flux regulators (TERs). The performance of the TE-integrated evaporator is strongly influenced by its heat exchange structure. The structure transfers the fuel cell exhaust heat to the evaporation chamber to evaporate the methanol, where TE modules are installed in between to facilitate the heat regulation. In this work, firstly, a numerical study is conducted to determine the working currents and working modes of the TERs under the system working condition fluctuations and during the system cold start. A three-dimensional evaporator model is generated in ANSYS FLUENT® by combining a compact TE model with various heat exchange structure geometries. The compact TE model can dramatically improve the computational efficiency, and uses a different material property acquisition method based on module manufacturers' datasheets. Secondly, a simulation study is carried out on the novel evaporator to minimize its thermal resistance and to assess the evaporator pressure drop. The factors studied include the type of fins in the heat exchange structure, the thickness of the fins, the axial conduction penalty, etc. Results show that the TE-integrated evaporator can work more efficiently and smoothly during both load fluctuations and system cold start, offering superior performance. TMS, 2013 Thermoelectric heat regulator nationallicence TE-integrated methanol evaporator nationallicence heat regulation nationallicence heat loss nationallicence compact TE model nationallicence Gao Xin Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut Chen Min Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut Snyder G. Materials Science, California Institute of Technology, 91125, Pasadena, CA, USA aut Andreasen Søren Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut Kær Søren Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2035-2042 0361-5235 42:7<2035 2013 42 11664 https://doi.org/10.1007/s11664-013-2514-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2514-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gao Xin Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut NATIONALLICENCE 700 1- Chen Min Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut NATIONALLICENCE 700 1- Snyder G. Materials Science, California Institute of Technology, 91125, Pasadena, CA, USA aut NATIONALLICENCE 700 1- Andreasen Søren Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut NATIONALLICENCE 700 1- Kær Søren Department of Energy Technology, Aalborg University, Pontoppidanstraede 101, 9220, Aalborg, Denmark aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 2035-2042 0361-5235 42:7<2035 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer