Abstract
Refrigerator and Air-Conditioner Combined System improves Coefficient of Performance of the system during year and achieves diffusion of risks. This system has two refrigerating cycles and two plate heat exchangers. The case is divided into two and it is controlled systematically by connecting both cases with pipes and the signal line. This system has 27% energy saving effect by waste heat recovery heating, and 11% energy saving effect by waste heat recovery cooling, and 17% energy saving effect during year.