HYDROGEN GAS COOLING METHOD AND HYDROGEN GAS COOLING SYSTEM

摘要

A hydrogen gas cooling method is provided. The method includes a preparation step and a cooling step. In the preparation step, a heat exchanger that contains a layered body of a first layer and a second layer is prepared. The first layer has a plurality of first micro channels, and the second layer has a plurality of second micro channels. In the cooling step, hydrogen gas is cooled by exchanging heat between the hydrogen gas flowing in the first channels with brine flowing in the second channels.

主权项

1. A hydrogen gas cooling method, the method comprising:
preparing a heat exchanger, which comprises a stacked body comprising a first layer and a second layer stacked upon one another, wherein the first layer comprises a plurality of first flow passages that are fine flow passages and the second layer comprises a plurality of second flow passages that are fine flow passages; and cooling a hydrogen gas which is allowed to flow through each of the first flow passages while allowing a brine that is a non-evaporative antifreeze and has a temperature lower than the hydrogen gas to flow through each of the second flow passages to perform heat exchange between the hydrogen gas flowing through the first flow passages and the brine flowing through the second flow passages, wherein in said cooling, the hydrogen gas is allowed to flow through each of the first flow passages such that the hydrogen gas flowing through each of the first flow passages moves from one side to the other side in a particular direction orthogonal to a stacking direction of the first layer and the second layer while the brine is allowed to flow through each of the second flow passages such that the brine flowing through each of the second flow passages moves from the other side to the one side in the particular direction, and a temperature and a flow rate of the brine fed into each of the second flow passages are controlled such that a temperature of the brine at a feed-out port of the second flow passages is higher than a temperature of the hydrogen gas at a feed-out port of the first flow passages.