Fuel cell power plant self-controlling coolant cleaning process

Details Fuel cell power plant self-controlling coolant cleaning process Fuel cell power plant self-controlling coolant cleaning process

H - Electricity

01

M

362/46, 319/7

H01M 8/06 (2006.01) B01D 19/00 (2006.01) H01M 8/04 (2006.01)

Patent

CA 1171455

-17- Abstract of the Disclosure In a process for deaerating and purifying both the water which is recirculated in a coolant loop through a stack of fuel cells and the make-up water for the coolant loop, a portion of the water from the coolant loop is blown down into a deaerator water reservoir to which make-up water is added as required by the coolant loop. Water is withdrawn from the reservoir, purified, and then introduced into the coolant loop at a rate sufficient to maintain the desired amount of water circulating in the coolant loop. The blowdown provides some of the heat for deaerating the water; and the rate of blowdown flow into the reservoir is sufficient to maintain an acceptable level of impurities in the recirculating coolant loop water. Preferably, the blowdown f low rate is controlled as a function of the amount of make-up water required to be added to the coolant loop.

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