Vacuum isati yatonhodzwa yemichero nemiriwo inogona kukurumidza uye zvakaenzana kubvisa kupisa kwemunda kunounzwa nekunhonga, kuderedza kufema kwemichero nemiriwo, nokudaro kurebesa nguva yekuchengeta mitsva yemichero nemiriwo, kuchengetedza kutsva kwemichero nemiriwo, nekuvandudza kunaka kwekuchengeta kutsva.
Vacuum pre-cooling ndiyo inokurumidza uye inodhura zvakanyanya kutonhora system yemiriwo, michero, maruva, etc. Vacuum pre-cooling tekinoroji inogona kuwedzera hupenyu hwesherufu yezvigadzirwa, kuderedza mwero wekuora, uye nekuvandudza zvakanyanya kunaka kwezvigadzirwa, uye zvino varimi vakawanda vemiriwo nemichero vanosarudza vacuum inotonhorera.