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Effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential split-system air conditioners

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Title: Effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential split-system air conditioners
Author: Dooley, Jeffrey Brandon
Abstract: Three experimental studies were conducted to quantify the effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential air conditioners. For all studies, the indoor dry-bulb (db) temperature was 80°F (26.7°C) db. The cycling study consisted of twelve transient tests conducted with an outdoor temperature of 95°F (35°C) db for cycle times of 6, 10, 15, and 24 minutes. Indoor relative humidities of 40%, 50%, and 60% were also considered. The evaporator airflow study consisted of twenty-four steady-state tests conducted with an indoor condition of 67°F (19.4°C) wet-bulb (wb) for evaporator airflows ranging from 50% below to 37.5% above rated airflow. Outdoor temperatures of 85°F (29.4°C) db, 95°F (35°C) db, and 105°F (40.6°C) db were also considered. The coil fouling study used a total of six condensers that were exposed to an outdoor environment for predetermined amounts of time and tested periodically. Three of the condensers were cleaned and retested during the periodic testing cycles. Testing consisted of thirty-three steady-state tests conducted with an indoor condition of 67°F (19.4°C) wb for outdoor exposure times of 0, 2000, 4000, and 8000 hours. Outdoor temperatures of 82°F (27.8°C) db and 95°F (35°C) db were also considered.
Publisher: Texas A&M University
Subject: Cycling
Transient Dehumidification
Instantaneous Capacity
Cyclic Capacity
Moisture Removal Rate
Evaporator Airflow
Condenser Coil Fouling
URI: http://hdl.handle.net/1969.1/1513
Date: 2004-12

Citation

Dooley, Jeffrey Brandon (2004). Effects of system cycling, evaporator airflow, and condenser coil fouling on the performance of residential split-system air conditioners. Master's thesis, Texas A&M University. Texas A&M University. Available electronically from http : / /hdl .handle .net /1969 .1 /1513.

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