Heat Recovery Performance Verification

Four (4) large air handling units (AHUs) in one of the buildings have heat recovery; however, only two (2) were operating efficiently.

The heat recovery system supplies a 50% glycol solution to the four (4) heat recovery coils in AHU-1A, AHU-1B, AHU-1C, and AHU-1D. The system utilizes a single 100 HP constant flow pump which operates when the outside air temperature decreases below 54°F and is disabled when the outside air temperature rises above 55°F.  Continue reading “Heat Recovery Performance Verification”