SKID COOLER PIPING (IMAGE) Southwest Research Institute Caption The U.S. Department of Energy has awarded a $1.5 million contract to SwRI to evaluate the safety and efficiency of a full-scale compressor system for hydrogen-natural gas blends with up to 20% hydrogen by volume. The project will utilize a full-scale reciprocating compressor loop at the Institute’s San Antonio campus, rendered in this image. Credit Southwest Research Institute Usage Restrictions Images/Videos may be used by the public for educational and informational purposes only. License Original content 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.