a student say,'we can cool the kitchen by opening the door of the refrigeartor
inside the kitchen." Assume the refrigerator is located at the centre of a closed kitchen with no window and door kept closed. state whether he is right or wrong and explain briefly.
雪櫃可以當冷氣機用嗎
2008-10-18 10:14 pm
回答 (1)
2008-10-27 11:09 pm
✔ 最佳答案
請問要用英文答的嗎..先用中文啦..
其實第一.,你要明白...雪櫃/制冷設備的運作原理...
佢利用科學原理...任何液體變氣體時會吸收熱力..而由氣體變回液體時卻會放出熱力..
咁如你所說..
把雪櫃放於一個室內.仲要把所有門窗都關上,那雪櫃所吸收的熱散去那呢..
而當中我地仲未考慮....整個過程中..我地利用電力推動壓縮機,等用電設備所排出的熱力...所以如你所說...室溫只會一路上升呢..
但如果把散熱部份放出室外..理論是可行的.
但仲有其它問題.包括雪櫃所用的制冷濟是比較底的..佢做出來的溫度是零下約4度,較冷氣機的7度為低,
那會很易令雪櫃的制冷COIL 結冰呢.那便會因結冰而效果變弱呢...
收錄日期: 2021-04-16 15:37:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081018000051KK01111