Posted on 2016/07/07. Rutherford County Schools is encouraging reading over the summer by providing your children access to myON, an online personalized collection of more than 5,000 digital books that can be read on computers, laptops, and other devices anytime, anyplace. more. School Bell Times For 2016-17.
Freon was a branâ¦d name.   Refrigerant cycle:So we have a pure gas, at room temperature and pressure a gas. If we compress the gas we get a hot gas that occupies less space. We then cool the hot gas and this turns the gas into a liquid.
History of Freon in HVAC. What is FREON? The refrigerants that were used in mechanical refrigeration in the early days were sulphur dioxide, carbon dioxide, ammonia and methyl chloride. The principle behind mechanical refrigeration is that when a compressed air expands, it absorbs heat from the environment.