METHOD FOR TESTING LIQUID CLIMATIC DEVICES WITH FORCED CONVECTION Russian patent published in 2022 - IPC F24H15/104 F24H3/02 G01K17/06 G01N25/20 G01M99/00 

FIELD: thermophysical measurements.

SUBSTANCE: invention relates to the field of thermophysical measurements, in particular, to determine the operating characteristics of climatic devices used to maintain a thermal microclimate in the premises, and can be used when testing devices close to real operating conditions, including research and development work during their development and testing when putting them into production and mass production. Instruments are tested in a thermally insulated sealed chamber, divided by the enclosing structure into two sections. In the section that does not contain the device, temperature conditions corresponding to different climatic temperature conditions are created for a long time with the help of climatic equipment. The section containing the device is additionally supplied with time-varying thermal power corresponding to different thermal inputs into the premises of the buildings, including heat inputs from the influence of solar radiation through translucent enclosing structures. In the process of testing, liquid coolant is supplied to the device inputs, its flow rates and temperature at the inputs and outputs are measured. At the same time, measurements of air temperature are carried out at points of the section containing the device, which are different in area and in height, including a control point in the center of the section volume. Based on the results of measurements of the flow rate of the liquid heat carrier and its temperature at the inlets and outlets, the efficiency of the device is determined in the form of its heat output when operating in the air heating mode and cooling output when operating in the air cooling mode. According to the measured values of temperature at various points of the section containing the device, its gas-dynamic efficiency is additionally determined. As the gas-dynamic efficiency, the bypass ratio between the air leaving the device and the air entering it and the efficiency of distribution in the vertical direction of the air leaving the device are determined.

EFFECT: expanding the testing capabilities of liquid climate devices with forced convection, including testing for heaters with forced convection, air conditioning devices and devices with combined functions, expanding the testing capabilities of forced convection climate devices by determining the gas-dynamic efficiency from the test results, testing devices in conditions close to the actual operating conditions of the premises.

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