"Prepared for the National Renewable Energy Laboratory, on behalf of the U.S. Department of Energy's Building America Program, Office of Energy Efficiency and Renewable Energy."
"September 2013."
"NREL technical monitor: Cheryn Metzger."
Bibliography
Includes bibliographical references (page 34).
Note
"DOE/GO-102013-3788."
Funding
DE-AC36-08GO28308
Prepared under subcontract no. KNDJ-0-40342-03
Summary
A 4-ton Low Temperature Heat Pump (LTHP) manufactured by Hallowell International was installed in a residence near New Haven, Connecticut and monitored over two winters of operation. After attending to some significant service issues, the heat pump operated as designed. This report should be considered a review of the dual compressor "boosted heat pump" technology. The Low Temperature Heat Pump system operates with four increasing levels of capacity (heat output) as the outdoor temperature drops.
