Refrigerants -- Cooling with Propane (image) DOE/Oak Ridge National Laboratory Share Print E-Mail Caption Oak Ridge National Laboratory's Bo Shen works with a prototype window air conditioning unit that cools using propane, which lowers costs, increases efficiency and benefits the environment. Credit Jason Richards/Oak Ridge National Laboratory, U.S. Dept. of Energy Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.