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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):
Other Subject(s):
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