Run-Around Coil System Calculator

Calculate performance of run-around coil energy recovery systems.

Air flow through both coils.
CFM
Entering outdoor air temperature.
°F
Entering exhaust air temperature.
°F
System effectiveness (typically 0.45-0.65).
ratio

Results

Preheated Supply Temperature-°F
Heat Recovery Rate-BTU/hr
Required Glycol Flow-GPM
References: ASHRAE Handbook - HVAC Systems and Equipment, Chapter 26 (Run-Around Coil Systems)