Evaporator Calorimeter

Verification of commercial, automotive, truck, off-highway and agricultural evaporator performance and efficiencies. Commercial Evaporator Test to ANSI/ASHRAE Standard 23.1, 23.2 & ISO 917:1989 specifications.  Variable testing conditions to simulate “real world” testing conditions.  Calorimeters can be designed to perform within the prescribed operating ranges of R-134A, R1234yf, R-404A, R-410A, R-744A and R-22.


  • 10:1 turndown on all control variables.
  • Closed loop airflow control for maximizing airflow temperature and humidity control range across UUT.
  • Use as a stand alone system or integrate with other supporting modules including heater core and blower assembly (automotive applications).
  • Options available for determining “oil in circulation” values.
  • Data collection and computation through PLC based touch screen, also available through LabVIEW® automation software packages.


Capacity: Up to 200,000+ BTUH
Airflow: Up to 1,000 cfm+

Airflow Temperature Range: -40F to 160+ F
Airflow Humidity Range: 10 to 95% RH
Refrigerant Suction Pressure: Based on Refrigerant
Temperature Sensor(s): RTD or Thermocouple
Refrigerant Suction Temperature: Based on Refrigerant

Airflow: Ashrae 41.7 Meter or V-Cone or Brandt
Refrigerant Flow: Coriolis
Temperature: RTD

Contro:l Fully automatic, PLC driven
Control Interface: LabVIEW® software with PC interface