热量似乎不会自动从低温流向高温,为了冷冻食物,人们发明了冰箱,通过人工的方式,拥有了一片凉爽的空间。普通的冰箱采用制冷剂——氟利昂,气体氟利昂经压缩机压缩后,通过散热器再把因压缩产生的热量散去,氟利昂就由气体变成了液体,液体经过一个小孔后,由于膨胀,温度急剧降低,较 The heat does not seem to flow automatically from low to high temperatures, and in order to freeze the food, people have invented the refrigerator, artificially, and have a cool space. Ordinary refrigerator with refrigerant - Freon, Freon compressed by the compressor, and then through the radiator and then dissipated heat due to compression, freon gas from the gas into a liquid, liquid through a small hole, due to expansion, Temperature dropped dramatically, more