Current Facilities

The current psychrometric testing facility is located in the Engineering and Physical Sciences building at MSU.
The facility consists of two well-insulated chambers, each with the capability to control and measure temperature and humidity to very close tolerances.
Temperature regulation is handled by air handlers containing chilled glycol/water coils for cooling, as well as steam coils for heating. The chilled water is supplied by a rooftop chiller, while the steam is supplied by the MSU steam plant. Additional steam can be injected directly into the air stream to increase humidity.
A wide variety of instrumentation allows the staff to monitor the psychrometric properties of the air at multiple points within the chamber and test unit, the power consumption of the unit being tested, as well as the temperature and pressure of the refrigerant in the test unit at multiple locations. All of these measurements are used to provide a complete picture of the process taking place.
Current Facility Specifications
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Size 14x16x9 feet - 2 Chambers
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Outdoor Chamber - 40-120F + .5F , RH Variable
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Indoor Chamber - 65-80 + 0.3F, RH Variable
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Test Units up to 6 Tons (72,000 Btu/hr)