Abstract: The Oak Ridge National Laboratory (ORNL) subcontracted Energy Utilization Systems of Pittsburgh, Pennsylvania
in 1977 to develop a heat pump water heater (HPWH). After developing the HPWH, a field-test plan was implemented whereby 20
U.S. utilities each received five units for a one-year test period. During the field tests, ORNL tested two of the
prototype HPWHs identical to the field-test units in the laboratory. The ORNL experience proved extremely valuable in both
realigning the field-test procedures and in analyzing the field-test data. A comparison of the laboratory and the field-test
data was excellent on an overall basis but showed differences for parametric temperature sensitivities. Field-test data for
the effect of the HPWH on the house heating system were not overly conclusive, but laboratory test data were used to
evaluate this effect analytically.
Keywords: heat pump water heater, field test, laboratory test
Availability:
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Reference:
Presented at the:
ACEEE 1982 Summer Study
Santa Cruz, California
August 21-28, 1982
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