Delta T Coil Control Valve for Chiller Systems

The goal of this project is to determine and validate energy savings for a typical retrofit for two delta T valves in an HVAC chiller system. Delta T is the difference between the water supply and return temperature across a cooling coil. When downstream cooling coils have a low delta T, it can result in increased pumping costs for the chilled water distribution system. The assessment will look at two different pressure independent valves to control flow through coils: 1) a valve with embedded flow sensor couple with supply and return water sensors to optimize coil performance and communication with a BAS system, 2) a mechanical valve that maintains a constant differential pressure and flow across the controlled surface. The project will investigate the market potential and utility program perspective by surveying customers who might be a target market for this technology and identifying gaps and barriers.