Water chilling unit suitable for hydrogen refueling station and using method of water chilling unit

Abstract

The invention discloses a water chilling unit suitable for a hydrogen refueling station. The water chilling unit comprises a compressor water chilling unit and a hydrogen refueling machine water chilling unit. A first evaporator and a second evaporator form a closed loop through a connecting pipeline, the connecting pipeline comprises a first connecting pipe and a second connecting pipe, one end of the first connecting pipe is communicated with the second pipeline and located between the first water pump and the first valve, the other end of the first connecting pipe is communicated with the second evaporator, a third valve is arranged on the first connecting pipe, one end of the second connecting pipe is communicated with the first evaporator, the other end of the second connecting pipe is communicated with the fourth pipeline and located between the second heat exchanger and the second valve, and the fourth valve is arranged on the second connecting pipe. The using method of the water chilling unit suitable for the hydrogen refueling station is characterized by comprising three working modes, namely a compressor heat exchange mode, a hydrogen refueling machine heat exchange mode and a linkage working mode. According to the invention, the compressor water chilling unit and the hydrogen refueling machine water chilling unit are integrated, so that the hydrogen refueling time can be shortened.

Description

technical field [0001] The invention relates to the technical field of hydrogen refueling stations, in particular to a chiller suitable for hydrogen refueling stations and its usage method. Background technique [0002] The chillers equipped in existing hydrogen refueling stations are not specially suitable for hydrogen refueling stations. Usually, separate chillers are required for compression equipment and hydrogen refueling machines. According to the actual operating conditions of hydrogen refueling stations at this stage, due to the Soon, the requirement for the hydrogenation machine chiller is to provide a large amount of cooling capacity for heat exchange in a short period of time, and at the same time the outlet water temperature should be lower than normal temperature. If the hydrogenation machine chiller is in real-time standby state, it will consume a lot of power , and in the shutdown state, although it can save electric energy, it takes a certain amount of time t...

AI Technical Summary

Problems solved by technology

[0002] The chillers equipped in existing hydrogen refueling stations are not specially suitable for hydrogen refueling stations. Usually, separate chillers are required for compression equipment and hydrogen refueling machines. According to the actual operating conditions of hydrogen refueling stations at this stage, due to the Soon, the requirement for the hydrogenation machine chiller is to provide a large amount of cooling capacity for heat exchange in a short period of time, and at the same time the outlet water temperature should be lower than normal temperature. If the hydrogenation machine chiller is in real-time standby state, it will consume a lot of power , and in the shutdown state, although it can save electricity, it will take a certain amount of time to make the water temperature reach a usable state, which is even more unacceptable for hydrogen refueling stations that require rapid hydrogen refueling

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