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Bland
Join Date: Nov 2003
Location: I'm 'out there...'
Posts: 8,831
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Quote:
Originally Posted by red-beard
Fuel cells are around 94% efficient while the best practical combined cycle is around 55%.
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Maximum theoretical efficiency of a fuel cell is 80% at the cell level. The balance of plant (power conditioning, fans, preheating, humidification, etc.) is what kills it further.
The key is economies of scale with larger systems. On a small 5kw distributed generation system the best we could do was 30-40% overall efficiency and it was really load specific.
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06 Cayenne Turbo S and 11 Cayenne S
77 911S Wide Body GT2 WCMA race car
86 930 Slantnose - featured in Mar-Apr 2016 Classic Porsche
Sold: 76 930, 90 C4 Targa, 87 944, 06 Cayenne Turbo, 73 911 ChumpCar endurance racer - featured in May-June & July-Aug 2016 Classic Porsche
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