Performance of Residential Air-to-Air Heat Exchangers: Test Methods and Results

摘要

Test results obtained on five different residential heat exchangers are presented and the performance criteria, the test facility, and the test procedures used are described. The performance parameters measured were heat exchanger effectiveness (a measure of heat transfer ability), airstream static pressure drop, net cross-stream leakage, and fan system performance. Results showed the ability to transfer heat ranged from 43% to 75% of the theoretical maximum. The resistance to air flow varied by a factor of two. One of the heat exchangers was highly susceptible to leakage between airstreams and one had an unstable performance. Future plans are indicated: additional heat exchangers will be tested, a new test system will be used to measure cross-stream leakage, and the possibility and consequences of freeze-up within the heat exchangers will be investigated. (ERA citation 06:018833)