冷冻剂(refrigerant)须是无毒、不燃、无爆炸性、化学稳定性以及具有适合于作为冷冻循环介质的热力学性能

简介

冷冻剂通常是指低沸点的液体,它在需要冷冻的环境下汽化吸收热量,产生冷冻环境;又在其他环境下液化放出热量,然后又回到需要冷冻的环境下,如此循环即为冷冻循环。这种两相不断变化的冷冻剂称为初级冷冻剂(primary refrigerant),如氯氟烃(在空调中运用广泛)、乙烯丙烯等;然而还有部分冷冻剂在循环中无相变(即不发生汽液变化),这类冷冻剂称为次级冷冻剂(secondary refrigerant),例如盐水空气等。[1]

参见

资料来源

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