Patent ID: 7255157
Filing Date: 2007-08-14
Classification: F28D,F28F,H01M,Y02E

Abstract:
1. A heat exchanger, comprising: a) at least one fuel cell exhausting a first fluid; b) a first plate defining a first slot, a second slot, and a first manifold; c) a second plate defining a second manifold and a third manifold; d) a first tubular element for conveying said first fluid at a first starting temperature, said first tubular element having first and second ends, said first end of said first tubular element in fluid communication with said first slot, said second end of said first tubular element in fluid communication with said second manifold; e) a second tubular element for conveying said first fluid having first and second ends, said first end of said second tubular element in fluid communication with said second manifold, said second end of said second tubular element in fluid communication with said first manifold; f) a third tubular element for conveying said first fluid having first and second ends, said first end of said third tubular element in fluid communication with said first manifold, said second end of said fourth tubular element in fluid communication with said third manifold; g) a fourth tubular element for conveying said first fluid having first and second ends, said first end of said fourth tubular element in fluid communication with said third manifold, said second end of said third tubular element in fluid communication with said second slot; and h) a jacket surrounding at least one of said tubular elements for conveying a second fluid at a second starting temperature around said at least one of said tubular elements, whereby heat is transferred between said first fluid and said second fluid.