Showing results 11 - 20 of 34
DOE published a final rule prescribing new energy conservation standards for consumer water heaters. 75 FR 20112 (April 16, 2010). The consumer water heater energy conservation standard rulemaking docket EERE-2006-BT-STD-0129 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.
Prepared by: US DOE Office of Energy Efficiency and Renewable Energy
Published: April 16, 2010
The energy and cost savings potential of HPWHs as replacements for gas and electric WHs is examined in this paper. This study demonstrates the regional variations in the efficiency and economic viability of an HPWH across the continental United States for several installation locations.
Prepared by: National Renewable Energy Laboratory
Published: July 2013
ENERGY STAR resource page includes a video demonstrating how heat pump water heaters work and how certified models can help you save on your utility bills. Also included is a fact sheet explaining savings opportunities, and sections with additional information including the following:
The purpose of this project is to verify or refute many of the concerns raised by utilities regarding the ability of large tank HPWHs to perform DR by measuring the performance of HPWHs compared to ERWHs in providing DR services.
Prepared by: Pacific Northwest National Laboratory
Published: March 2015
Bonneville Power Administration partnered with the Electric Power Research Institute (EPRI) and Snohomish County PUD to be part of a national demonstration pilot for integrated heat pump water heaters (HPWH). 11 public utilities were selected to participate in this field test, which grew to 14 utilities.
Prepared by: Bonneville Power Administration
Published: October 2012
Recently several manufacturers, including General Electric (GE), Rheem, AO Smith, Stiebel Eltron, and Air Generate, have introduced integrated HPWHs. Performance, installation, operation and maintenance, specifically related to the New England region are addressed.
Prepared by: National Grid and Cape Light Compact
Published: June 7, 2012
Performance Research Type: Research Study
This paper explores the laboratory performance of five integrated Heat Pump Water Heaters (HPWHs) across a wide range of operating conditions representative of US climate regions. Laboratory results demonstrate the efficiency of this technology under most of the conditions tested and show that differences in control schemes and design features impact the performance of the individual units. These results were used to understand current model limitations, and then to bracket the energy savings potential for HPWH technology in various US climate regions. Simulation results show that HPWHs are expected to provide significant energy savings in many climate zones when compared to other types of water heaters (up to 64%, including impact on HVAC systems).
Prepared by: National Renewable Energy Laboratory
Published: February 2012
This HPWH demonstration examines the overall performance of HPWHs installed in a conditioned space with a number of supply and/or exhaust ducting configurations, as well as the interactions between the HPWH and the home's heating/cooling system.
Prepared by: Pacific Northwest National Laboratory
Published: July 2014
Using the measurement and verification (M&V) plan developed by Ecotope to assess heat pump water heaters (HPWH), the AO Smith Voltex was evaluated at the National Renewable Energy Lab. This report is the third of three preliminary assessments of three different equipment models.
Prepared by: Bonneville Power Administration
Published: July 12, 2011
Using the measurement and verification (M&V) plan developed by Ecotope to assess heat pump water heaters (HPWH), the Rheem Hybrid HP50 was evaluated at the National Renewable Energy Lab. This report is the second of three preliminary assessments of three different equipment models.
Prepared by: Bonneville Power Administration
Published: July 12, 2011