Demonstration of High-Efficiency Hot Water Systems in Commercial Foodservice
High Efficiency Hot Water Systems for Commercial Food Service
Research results indicate that making a number of modifications can have significant benefits. For example, replacing a non-condensing water heater with a condensing heater, adding pipe insulation, lowering the recirculation flow rate, and changing the recirculation return location could increase heating efficiency by up to 54 percent. The San Ramon Food Service Center will use the research results to inform custom commercial kitchen designers, plumbing professionals and regulatory bodies. Additional demonstrations are needed to show best-in-class equipment and design techniques and to document savings and benefits.
This project validates the natural gas savings of high-efficiency advanced hot water distribution system designs, measurement of energy savings, and optimization techniques to encourage the design community to adopt these measures. The project includes a dissemination program and includes development of design tools and a cost calculator to help the industry with decision-making regarding appropriate technology.
Improved hot water system delivery efficiency of up to 54 percent based on recent test results.
Environmental & Public Health
Reduction in natural gas use will result in reductions in greenhouse gas emissions.
Key Project Members
Davis Energy Group, Inc.
Pacific Gas and Electric Company
Gas Technology Institute