Air heating reflux system for low-temperature starting of fuel cell and control method
A fuel cell and air heating technology, applied in the direction of fuel cell heat exchange, fuel cells, fuel cell additives, etc., can solve problems affecting safety, uneven heat distribution, stack damage, etc., to reduce air energy consumption loss, prolong service life, and prevent excessive discharge
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[0040] According to the prior art, the temperature of the compressed air will increase, and the heat of the compressed air can be directly transferred to the reaction surface of the catalyst with a fast heat transfer rate, so the heat can be used to heat the stack at low temperature. However, due to the need to reduce the power consumption and boosting capacity of the air compressor as much as possible at low temperatures, the pressure ratio Pr needs to be controlled between 1.1-1.3. The device 14 heats the inlet temperature to meet the requirements of the stacking temperature and flow rate at the same time.
[0041] Such as figure 2 As shown, the present invention provides a fuel cell low-temperature starting air heating return system, which specifically includes: an air filter 1, an inlet three-way valve 2, a mass flow sensor 3, an air compressor 4, an intercooler 5, an outlet back pressure valve 6, Humidifier 7, stack inlet temperature sensor 8, stack inlet pressure senso...
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