Heat Exchanger Testing

The OTS laboratory includes three temperature and humidity-controlled wind tunnels for the purposes of testing air-to-refrigerant heat exchangers. Testing can be provided to confirm performance data and/or to validate heat exchanger modeling assumptions using CoilDesigner® or other software. Testing can be done with hot water, chilled water, glycol or refrigerant. Testing capabilities are summarized in the following table:

Parameter	Units	Minimum	Maximum
Face area		1.5' x 1.5'	3' x 3'

Air flow rate	CFM	300	4,000
Air inlet temperature	℉	54	122
Moisture	Gal/day	n/a	168
Water flow rate	GPM	n/a	40
Water inlet temperature	℉	50	149
Water test capacity	kW	n/a	52

Refrigerant test capacity - evaporation	kW	n/a	26
Refrigerant test capacity - condensation	kW	n/a	27
Refrigerant flow rate	lbm/min	n/a	20.5
Condensation temperature	℉	64	149
Evaporation temperature	℉	34	112

OTS uses high accuracy equipment to provide an energy balance within 2% - 5%. Accommodations for other fluids, such as oil, and/or test conditions outside of the range listed above can be made on a case-by-case basis.

Contact us to discuss your heat exchanger testing needs.