These calorimeters are used to measure the cooling capacity of discrete compressors to be used in home and car air conditioners, refrigerators, and other equipment. There are several available measurement methods, and they mainly use a dry system refrigerant calorimeter and a refrigerant flowmeter. For this reason, capacity measurement can be conducted accurately over a wide range.
In particular, the calorimeters for compact refrigerator models allow accurate measurement even at extremely low capacities of 100 W/h or less, because the compensation for heat leakage is kept to an absolute minimum.
Compressor Calorimeter (Secondary fluid calorimeter methods)
- In general, controlled temperature around the compressor is a standard specification.
- The temperature around the evaporator's heat exchanger is measured to compensate for heat leakage.
- Standard software programs for automation are available. Everything from test conditions setting, setting modifications, and date collection, to stability judgment and data printing is automatically performed by the computer (stability judgment criteria values, refrigerant capacity standard values, and the accumulated refrigerant capacity time can be changed).
JIS B 8606, refrigerant compressor testing method.
Comparison of the secondary fluid calorimeter and refrigerant vapor flowmeter methods
[Energy and space saving]
Refrigerant vapor flowmeter methods are kept low electric power consumption.
| Secondary fluid calorimeter methods |
|
Refrigerant vapor flowmeter methods |
| Used.(heater: 10kW) |
Heat exchanger of the evaporator |
Used.(heater: not used.) |
| Used.(heater: 1.2kW) |
Super-cooling heat exchanger |
Not used |
| Used.(heater: 3.7kW) |
Refrigerator |
Used.(0.75kW) |
| Used.(heater: 18kW) |
Water tank heater |
Used.(2kW) |
| About 2.5 to 3.0 kg |
Amount of refrigerant used
(in the case of the R-22) |
About 1.2 to 1.7kg |
Approximately 3.22㎡
(incorporating the water tank)
Approximately 0.6㎡
(separately installed refrigerator) |
Installation space required for the system equipment(Cycle equipment) |
Approximately 2㎡
(incorporating the water tank and refrigerator) |
*The above data are those of 2HP class air compressor calorimeters.
*Data for the refrigerant vapor flowmeter method are taken with standard air compressor calorimeters.
