Direct heat exchange method calorimeter

Abstract

The invention discloses a direct heat exchange method calorimeter, and belongs to the technical field of refrigerating capacity testing equipment of refrigeration compressor units. According to the invention, an electric heating and refrigeration direct heat exchange parallel method is adopted, a refrigeration heat exchange tube bundle group is arranged in a heat insulation box, fin type heat exchange sheets are arranged outside the refrigeration heat exchange tube bundle group, a U-shaped electric heater heating tube is arranged in the refrigeration heat exchange tube bundle group, the refrigeration heat exchange tube bundle group and the U-shaped electric heater heating tube penetrate in the same fin type heat exchange sheet to form a calorimeter heat exchange and heat transfer tube group and are fixed at the left wall plate and the right wall plate of a calorimeter, the cover plate of the calorimeter and the base plate of the calorimeter are connected and fixed with the left wall plate and the right wall plate of the calorimeter to form one body stored in the heat insulation box body, and a heat insulation layer has an effect on external heat insulation and heat preservation; asealed pressed container is not required, a second refrigerant is not needed, the correctness of test measurement data of the calorimeter is ensured, the refrigerating capacity of the compressor is counteracted by directly utilizing the heat generated by the electric heater, and the refrigerating capacity and the input power of the refrigeration compressor are measured.

Description

technical field [0001] The invention belongs to the technical field of refrigerating capacity testing equipment for refrigeration compressor units, and in particular relates to a direct heat exchange method calorimeter. Background technique [0002] The calorimeter is a test method for measuring the cooling capacity and input power of the refrigeration compressor unit. At present, the performance detection of the refrigeration compressor unit system usually adopts the second refrigerant calorimeter method to measure the refrigeration capacity and input power of the refrigeration compressor unit. The second refrigerant heat meter method is to measure the cooling capacity through the second refrigerant heat meter, and use the heat generated by the electric heating tube inside the second refrigerant heat meter to consume the heat generated by the evaporator coil. cooling capacity. The second refrigerant calorimeter is a closed pressurized heat-insulated container, the evapora...

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Problems solved by technology

The problem with existing calorimeters is mainly that the calorimeter needs a closed pressurized container, and the calorimeter is prone to heat leakage, which leads to inaccurate test measurement data, because the second refrigerant calorimeter is a part of the indirect measurement of the cooling capacity of the compressor. The basic principle of this device is to use the heat emitted by the electric heater to offset the cooling capacity of the compressor. It runs for a long time, but the read data has a large deviation, which affects the accuracy of the calorimeter measurement.

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