Seasonal performance of air conditioners: experimental analysis of some of the DOE test-procedure set-up measurement errors for unitary air conditioners and heat pumps
The DOE test procedure for estimating the seasonal efficiency of air conditioners and heat pumps does not yield repeatable results. The following major sources of that non-repeatability, due to test set-up tolerances are experimentally investigated: (1) heat leakage into the test box both during the on and off time periods of the cyclic test, (2) thermal storage of mass inside the test box, and (3) use of dampers required to prevent forced and free convection over the indoor coil during the off time period of the cyclic test. A 2.5 ton split heat pump in the cooling mode was used in this investigation. In order to study the effect: (1), experiments were performed with different amounts of heat leakage simulated by artificially adding heat into the test box. The effect (2) was investigated by performing the tests under the conditions of low and high thermal mass inside the test box. In order to study the effect (3), some tests were performed with dampers open and with continuous air flowing across the evaporator coil. An analysis was performed over the effects of random measurement error on the uncertainty of the experimental results obtained. The experimental results were analyzed and conclusions were drawn.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA). Ray W. Herrick Labs.
- DOE Contract Number:
- AC02-80CS23337
- OSTI ID:
- 5865334
- Report Number(s):
- DOE/CS/23337-T2; ON: DE83016058
- Resource Relation:
- Other Information: Thesis. Submitted by A.V. Saljnikov
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR CONDITIONERS
EFFICIENCY
HEAT PUMPS
DRAFT CONTROL SYSTEMS
ERRORS
EVAPORATORS
HEAT LOSSES
SEASONAL VARIATIONS
THERMAL MASS
CONTROL EQUIPMENT
ENERGY LOSSES
EQUIPMENT
FLOW REGULATORS
LOSSES
MASS
VARIATIONS
320100* - Energy Conservation
Consumption
& Utilization- Buildings