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The Effect of Reduced Evaporator Air Flow on the Performance of a Residential Central Air Conditioner
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This paper discusses the measured degradation in performance of a residential air conditioning system operating under reduced evaporator air flow. Experiments were conducted using a R-22 three-ton split-type cooling system with a short-tube orifice expansion device. Results are presented here for a series of tests in which the evaporator air flow was reduced from 25 to 90% below what is normally recommended for this air conditioner. At present, very little information is available which quantifies the performance of a residential cooling system operating under degraded conditions such as reduced evaporator air flow. Degraded performance measurements can provide information which could help electric utilities evaluate the potential impact of system-wide maintenance programs.
Palani, M.; O'Neal, D.; Haberl, J. (1992). The Effect of Reduced Evaporator Air Flow on the Performance of a Residential Central Air Conditioner. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from