Open type air source heat pump drying unit performance testing device and testing method thereof

Abstract

The invention belongs to the technical field of equipment performance testing, and particularly discloses an open type air source heat pump drying unit performance testing device and a testing method thereof. Comprising a to-be-tested drying unit; the drying unit to be tested is placed in the enthalpy difference laboratory; the air inlet heating assembly is used for providing an experimental temperature field for the to-be-tested drying unit; the air outlet cooling assembly is used for cooling the air outlet of the to-be-tested drying unit; one end of the inlet air heating assembly is connected with a ventilation pipe outside the enthalpy difference laboratory, and the other end is connected with an air inlet of the to-be-tested drying unit; one end of the air outlet cooling assembly is connected with an air outlet of the to-be-tested drying unit, and the other end is connected with an air tunnel in the enthalpy difference laboratory; and an induced draft fan is arranged in the wind tunnel. The device not only has a simple structure, but also can ensure the safety of a test environment while meeting the performance test of the open type drying unit.

Description

technical field [0001] The invention belongs to the technical field of equipment performance testing, in particular to a performance testing device and a testing method for an open air source heat pump drying unit. Background technique [0002] The open air source heat pump drying unit is referred to as the open drying unit. The function of the open drying unit is to heat the air through the air source heat pump to provide the heat source host of the drying equipment for heating and dehumidification with hot air. It is widely used in wood, grain, food, pharmaceutical, ceramics, aquatic products, textile, chemical papermaking, tea, sludge treatment and other industries, and plays an important role in the heat and humidity treatment of air. The level of parameters will have a direct impact on the quality of materials. [0003] Open drying units are divided into high temperature type and medium temperature type according to the air dry bulb temperature. The drying unit needs t...

AI Technical Summary

Problems solved by technology

The outlet air temperature of the high-temperature open-type drying unit is as high as 70°C, and the outlet air temperature of the medium-temperature open-type drying unit is as high as 55°C, and the corresponding return air temperature is also higher. In some special industries, even higher air outlet is required. Temperature, because the high-temperature environment of the conventional wind tunnel enthalpy difference laboratory is difficult to achieve, and the high-temperature environment will bring fire and other safety hazards to the inspection and testing equipment; on the other hand, the high-temperature environment of the laboratory can easily damage the health of inspection and testing personnel

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