Actions for Cooling and Heating Season Impacts of Right-Sizing of Fixed- and Variable-Capacity Heat Pumps With Attic and Indoor Ductwork [electronic resource].

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Cooling and Heating Season Impacts of Right-Sizing of Fixed- and Variable-Capacity Heat Pumps With Attic and Indoor Ductwork [electronic resource].

Published
Washington, D.C. : United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
69 pages : digital, PDF file
Additional Creators
National Renewable Energy Laboratory (U.S.), United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A new generation of full variable-capacity air-conditioning (A/C) and heat pump units has come on the market that promises to deliver very high cooling and heating efficiency. The units are controlled differently than standard single-capacity (fixed-capacity) systems. Instead of cycling on at full capacity and cycling off when the thermostat is satisfied, the new units can vary their capacity over a wide range (approximately 40%–118% of nominal full capacity) and stay on for 60%–100% more hours per day than the fixed-capacity systems depending on load-to-capacity ratios. Two-stage systems were not evaluated in this research effort.
Report Numbers
E 1.99:nrel/sr--5500-64274
E 1.99: doe/go--102015-4678
doe/go--102015-4678
nrel/sr--5500-64274
Subject(s)
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Note
Published through SciTech Connect.
06/24/2015.
"nrel/sr--5500-64274"
" doe/go--102015-4678"
Cummings, James; Withers, Charles; Kono, Jamie.
Funding Information
AC36-08GO28308
View MARC record | catkey: 23762293