27 دی Uncategorized Freon gases and their comparison in refrigeration systems 29 فروردین 1401 By کارما 0 comments IntroductionFreon refrigerant is a substance that is gaseous at normal room temperature, but when cooled and compressed, it changes sta... Continue reading
27 دی Cold storage, Cold storage Fast freezing 30 فروردین 1401 By کارما 0 comments Freezing is one of the ways to preserve food that has been done by humans in the past. The Eskimos used glaciers at the poles to keep t... Continue reading