The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2015
Session ID : B124
Conference information
B124 Phase change phenomena of water/methanol solution in a microchannel by utilizing PEFC exhaust heat
Katsuyuki FukaiSuguru UemuraTsutomu AokiShuichiro Hirai
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Abstract
Compact power generation systems which consist of methanol reformer and Polymer Electrolyte Fuel Cell (PEFC) are greatly required as emergency power source. In this system, PEFC exhaust heat can be utilized for evaporating water/methanol solution before reforming. To use PEFC exhaust heat (about 80〜90 °C), a microchannel heat exchanger is suggested as an evaporator because of supplying heat more efficiently. However, phase change phenomena of water/methanol solution in a microchannel are not clarified. In this study, the double-pipe heat exchanger including the microchannel was developed. Then, phase change phenomena in the microchannel were visualized with varying concentration, flow rate and pressure.
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© 2015 The Japan Society of Mechanical Engineers
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