Method and apparatus for cooling a fuel cell stack. The cooling system uses vaporization cooling of the fuel stack and supersonic vapor compression of the vaporized coolant to significantly increase the temperature and pressure of the liquid coolant flowing through a heat exchanger. By increasing the...http://www.google.es/patents/US7399545?utm_source=gb-gplus-sharePatente US7399545 - Supersonic vapor compression and heat rejection cycle
Supersonic vapor compression and heat rejection cycle
