Climatic Testing Systems Inc.
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Automotive A/C Compressor Calorimeter 

AUTOMOTIVE A/C COMPRESSOR CALORIMETER

Climatic Testing Systems, Inc.'s Automotive A/C Compressor Calorimeters are designed in accordance with ASHRAE Standard 23 and ISO Standard 917. The calorimeters are provided with a secondary refrigerant calorimeter vessel and Micro Motion® Coriolis mass flow sensor to provide accurate and repeatable determination of compressor capacity.

Climatic Testing Systems, Inc.’s calorimeter system provides the customer with control of such parameters as compressor speed, discharge pressure, liquid temperature or sub-cooling, suction temperature or superheat, and suction pressure.  In addition, Climatic Testing Systems, Inc. offers as an option an oil control loop that allows the user to precisely and accurately control and report the percentage of oil in circulation automatically, in real-time.

The calorimeter systems are designed to provide heat balances within ±2% with a repeatability of ±1%.  Climatic Testing Systems, Inc. offers a standard line of automotive compressor calorimeters up to 17 ton capacities.

 
Typical Performance Specifications
Parameter Range Stability

Discharge Pressure 90 to 465 Psia
620 to 3200 kPa
± 2
± 14

Suction Pressure 15 to 100 Psia
100 to 700 kPa
± 0.2
± 1.4

Liquid Refrigerant Inlet Temperature 60°F to 160°F
15°C to 52°C
± 0.2
± 0.1

Suction Temperature -15°F to 100°F
-25°C to 38°C
± 0.2
± 0.1

Compressor Chamber Temperature Ambient to 250°F
Ambient to 120°C
± 3.6
± 2

Compressor Speed 600 to 12000 RPM ± 0.25%
or
± 3 RPM

Oil Flow Rate 0 to 180 lbs/hr
0 to 90 kg/hr
± 0.5% of refrigerant flow
   
Software Features
> Editing of test program
> Automatic test sequencing
> Loop calibration and calibration reports
> Hardware checkout routine
> Stability monitoring
> Real-time tolerance adjustments
> Real-time history graphing capability
> Automatic test report generation
> Data file management

   
Performance Measurement
> 2% agreement or better measured mass-flow vs. calculated mass-flow
> 1% repeatability of test results
> Compressor capacities from 2000 BTUH to 200,000 BTUH

   
Options
> Manually controlled calorimeter
> Semi-automatic calorimeter with digital recorder
> Oil circulation control loop for real-time oil flow rate control
   
CTS will customize the system design to meet your specific testing needs!!

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