Fuel cell heat dissipation system for high-power power station and control method

Abstract

The invention provides a fuel cell heat dissipation system for a high-power power station and a control method. Fuel cell modules and heat exchangers are in one-to-one correspondence; a first water pump is in series connection with a first fuel cell module and a first heat exchanger to form a cooling liquid loop, and a second fuel cell module and a second heat exchanger form a first branch; the first branch is connected in parallel with the first fuel cell module, and is in series connection with the cooling liquid loop; the third fuel cell module and the third heat exchanger form a second branch, and the second branch is in parallel connection with the second fuel cell module and then is in series connection with the first branch; and so on; the N-th fuel cell module and the N-th heat exchanger form an (N-1)-th branch, and the (N-1)-th branch is in parallel connection with the (N-1)-th fuel cell module, and then is in series connection with the (N-2)-th branch; the second water pump, the heat dissipation device and the N heat exchangers are sequentially connected in series through pipelines. The technical scheme provided by the invention has the beneficial effects that each heat exchanger can respectively carry out heat exchange on each fuel cell, so that the heat dissipation problem of the fuel cell system of the high-power fuel power station is solved, the performance of the fuel cell system is better, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of power stations, in particular to a fuel cell cooling system and control method for high-power power stations. Background technique [0002] With the rapid development of my country's national economy and the continuous improvement of people's living standards, our demand for environmental improvement is becoming more and more urgent. The harm caused by traditional oil and coal to the environment is increasing day by day, and the replacement of new energy is imminent. Hydrogen energy has the advantages of high calorific value, no pollution and abundant sources, and is regarded as the clean energy with the most development potential in the 21st century. From a global perspective, from the perspective of resources and environmental protection, major developed countries in the world attach great importance to the development of hydrogen energy technology and industry. Hydrogen energy is one of the most promis...

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Problems solved by technology

[0003] Fuel cell power stations are an important application direction of fuel cells. Fuel cell power stations need to increase capacity to meet high-power output. The power of power stations is generally large, such as 100MW, but the current rating of fuel cell systems is generally 100kW. The fuel cell system has the problem of low heat dissipation efficiency

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