Wireless steam trap monitoring technology specifically focuses on steam trap systems within the commercial and industrial sectors. This field study aims to monitor steam traps at a site, demonstrating their significant impact on energy savings and efficiency improvements. The primary objectives of...
The purpose of this project was to evaluate the impact of heat conduction losses through attic ductwork on the energy performance of variable capacity heat pumps (VCHP). Four duct scenarios were evaluated:Ducts in conditioned spaceAttic ductwork with surface area and insulation typical of...
Central heat pump water heater (CHPWH) systems are playing a pivotal role in the decarbonization of multifamily and commercial buildings. These systems can provide electrified, efficient hot water for both new and existing buildings while minimizing grid impact and energy costs with load shifting...
This report focuses on the investigation of recirculation system balancing. Recirculation systems usually include parallel flow paths between supply and return pipes to distribute recirculation flow across all dwelling units. In an unbalanced system, water tends to travel through flow paths with...
This project will assess the market opportunity and technology performance of new split heat pump water heater (HPWH) designs for direct replacement of inefficient gas (including natural gas and propane) and electric water heaters located in constrained spaces in California multifamily buildings....
The South Coast Air Quality Management District (SCAQMD) is evaluating proposed zero nitrogen oxide (NOx) standards for residential and commercial space and water heating devices. As a part of its evaluation, SCAQMD needed to examine the potential grid impact. To support this effort, Southern...
This project involves a market study for the agricultural sector adoption of PEI-rated pumps in California. California agriculture irrigates more than 9 million acres using roughly 34 million acre-feet (MAF) of water typically diverted from surface waters or pumped from groundwater and consumes 8.8...
CHPWH systems in multifamily and commercial buildings serve two purposes: heating city water entering the building to usable hot water temperatures for occupants and maintaining the water temperature in the distribution and recirculation system. Temperature maintenance typically makes up about 30%...
HVAC Contractors working on energy efficiency and building electrification projects face technical and regulatory challenges. To support them, various organizations—including for-profits, non-profits, manufacturers, and state agencies—have developed software-based tools. These tools assist with...
