냉동기

https://blog.naver.com/whyplay/221948114953 -> 대류

https://sec-9070.tistory.com/309 -> 냉매

 

 

https://gallery-k.tistory.com/54 -> 효율

 

http://eplenc.com/pdf/48ctv2010Sep.pdf -> 냉동기 사양서