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Development of Diagnostic Rules for a Dry Bulb Economizer Mixed Air Loop
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Diagnostics of heating, ventilating, and air-conditioning (HVAC) systems is becoming increasingly important because of the rising cost of operation and maintenance of HVAC systems. At the same time, computer costs are tumbling allowing their use in new situations such as HVAC diagnostics. The Army has developed standard HVAC system configurations, thus facilitating development of knowledge bases for those systems. This paper describes the development of if-then-else rules which make up part of a knowledge base for a two fan variable air volume (VAV) air handling unit. Rules for the mixed air loop with a dry bulb economizer are presented.
Underwood, D. (1990). Development of Diagnostic Rules for a Dry Bulb Economizer Mixed Air Loop. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from