A high-efficiency, multi-functional cooling system for hydrogen production by electrolysis of alkaline solution

Abstract

A high-efficiency, multi-functional cooling system for producing hydrogen from alkaline solution via electrolysis includes an alkaline water electrolysis hydrogen production unit and a refrigeration unit. The alkaline water electrolysis hydrogen production unit includes an electrolyzer; the refrigeration unit includes a generator and an evaporator. The inlet of the generator's heat exchange tube is connected to the outlet pipe of the electrolyzer to receive the high-temperature alkaline solution output from the electrolyzer, serving as the driving heat source for the generator. The outlet of the generator's heat exchange tube is connected to the return pipe of the electrolyzer to output the cooled alkaline solution back to the electrolyzer. The evaporator is used to directly or indirectly cool the high-temperature hydrogen and / or high-temperature oxygen produced by the water electrolysis hydrogen production unit. This invention, on the one hand, utilizes the waste heat generated during the high-temperature alkaline solution refrigeration process to cool and dehumidify the hydrogen or oxygen, forming a self-circulation and greatly improving the cooling effect while effectively reducing energy waste; on the other hand, it ensures that the entire system can operate efficiently in different seasons and environments.

Images