RECIPROCATING COMPRESSOR FLOW LOOP (IMAGE) Southwest Research Institute Caption SwRI will use its onsite full-scale reciprocating compressor loop 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 U.S. Department of Energy is funding this $1.5 million project. 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.