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dc.creatorFarzad, M.en_US
dc.creatorO'Neal, D. L.en_US
dc.date.accessioned2005-07-25T21:01:31Z
dc.date.available2005-07-25T21:01:31Z
dc.date.issued1989en_US
dc.identifier.otherTR-89-08-01en_US
dc.identifier.urihttp://hdl.handle.net/1969.1/2089
dc.description.abstractThe effect of the improper charging on steady state and cyclic performance (capacity, EER, power consumption, SEER, and coefficient of degradation) of a residential air conditioner which utilized a thermal expansion valve was investigated. This study was the continuation of ESL/CON/88-1 performed by Mohsen Farzad and Dennis O'Neal. A fully charged condition was established as a base case. The full charge was obtained by charging the unit to the subcooling specified by the manufacturer for a specific indoor and outdoor temperatures. Once the full charge was determined, the unit was subjected to 40%, 30%, 20%, 15%, 10%, and 5% undercharging and 5%, 10%, 15%, and 20% overcharging of refrigerant by mass. The fully charged tests were compared to those for under and overcharging. The performance of the unit was evaluated as a function of charge as well as at four outdoor room temperatures (82°F, 90°F, 95°F, and 100°F). As the outdoor temperature increased, the total capacity and EER dropped. The maximum total capacity, EER, and SEER were found at 10% undercharging (12 6 oz). The capacity and efficiency (EER and SEER) of the unit were found to be less sensitive to under/overcharging than the unit with a capillary tube expansion previously studied. Other data such as refrigerant flow rate, sensible heat ratio, superheat and subcooling were also presented.
dc.format.extent13699526 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherEnergy Systems Laboratory (http://esl.tamu.edu), Texas A&M Universityen_US
dc.publisherDepartment of Mechanical Engineering, Texas A&M Universityen_US
dc.rightsAll rights reserved by the Energy Systems Laboratory of Texas A&M and the authors.en_US
dc.subjectimproper charging
dc.titleAn Evaluation of Improper Refrigerant Charge on the Performance of a Split System Air Conditioner with a Thermal Expansion Valveen_US
dc.typeTexten_US


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