大西熱学 Product Lineup

The "Balanced Room Type Calorimetry Method" is a testing chamber that simultaneously measures the capacity of both the indoor and outdoor sides with high precision. The indoor side automatically heats and humidifies the cooling and dehumidification provided by the test room air conditioner to achieve thermal equilibrium under JIS conditions, measuring the necessary supply amount to maintain that equilibrium. The outdoor side automatically achieves thermal equilibrium corresponding to the heat dissipation from the test air conditioner condenser, measuring the total heat amount in that state. This device is equipped with the aforementioned calorimeter for both indoor and outdoor measurements, allowing simultaneous measurement. 【Specifications】 ■ Indoor/Outdoor Balance Ratio: 2% or less ■ Reproducibility Accuracy: 1% or less ■ Testing Standards: JIS B8615-1/ISO 5151 *For more details, please download the PDF or feel free to contact us.

Our company handles a test chamber that is widely used for measuring the capacity of room air conditioners, package air conditioners, car air conditioners, etc., using the "Air Enthalpy Method (Cyclic Metric Type)." We simultaneously measure the temperature, humidity, and airflow of the intake and exhaust air of the tested air conditioning units to calculate their heating and cooling capacity. There are many variations of this device, and in simpler models, airflow measurement devices are installed only on the indoor side for measurement, making them suitable for the development of new models. 【Specifications】 ■ Reproducibility accuracy: 1% or less ■ Testing standards: JIS B8615-1/JIS B8615-2/ISO 5151 *For more details, please download the PDF or feel free to contact us.

The "Compressor Calorimeter" is a testing device used to measure the refrigeration capacity of various compressor units for room air conditioners, car air conditioners, refrigerators, and more. It mainly employs a system that combines the secondary refrigerant calorimeter method and liquid refrigerant flow meter, as well as a system using refrigerant vapor flow meter method. An optional circuit for controlling the oil circulation rate (OCR) can be added. 【Specifications】 ■ Reproducibility accuracy: 1% or less ■ Testing standard: JIS B8606 Testing methods for refrigerant compressors ■ Measurement range: 30W to 120,000W (production record) ■ Refrigerants: R32, R290, R448A, R449A, R744, R1234yf, etc. ■ Stabilization time: within 60 minutes (standard) *For more details, please download the PDF or feel free to contact us.

The "Car Compressor Calorimeter" is a testing device for car air conditioner compressors, primarily featuring two testing methods. The combined method of secondary refrigerant calorimetry and liquid refrigerant flow measurement allows for high-precision and highly reliable measurements by comparing the two measurement methods. The refrigerant vapor flow meter method establishes a refrigeration cycle that does not liquefy, achieving low cost, energy savings, space efficiency, and quick stability during the measurement cycle. Additionally, it is possible to attach a circuit to control the oil circulation rate (OCR) as an option. 【Specifications】 ■ Reproducibility accuracy: less than 1% (Under) ■ Testing standard: JIS B8606 Testing methods for refrigerant compressors ■ Measurement range: 150W to 30,000W (production record) ■ Refrigerants: R744, R134a, R1234yf, etc. ■ Stabilization time: within 60 minutes (standard) *For more details, please download the PDF or feel free to contact us.