The Department of Refrigeration and Air-Conditioning Engineering is a department of applied science that systematically studies theories and technologies related to refrigeration and air-conditioning engineering.The importance and increasing necessity of these fields are being recognized with the development of modern society s level of cultural life.The related field of refrigeration and air-conditioning engineering has a bright future since that size of manufacture and growth is rapidly improving annually.We focus on necessary theories and practical technology in the electronics field, which we classify as refrigerators and air-conditioners, transportation fields such as automobile and ships, cooling and heating of buildings and heat pumps, air-conditioning fields such as clean rooms, new renewable energy fields such as the use of solar and unutilized energy, and ultra-cold fields where high-value products are stored and more.