Air conditioning system control method

Abstract

The invention discloses an air conditioning system control method and relates to the technical field of air conditioning equipment. According to the method, the fresh air enthalpy value and the dew point enthalpy value are involved in calculation and control of the compressor refrigerating capacity, since the enthalpy values are involved in calculation of the compressor refrigerating capacity, thethermal insulation amount in the air is fully considered, shortcomings of PID control when the compressor input is in a certain critical state are covered, the stability of an air conditioning systemis further optimized, the problem of frosting caused by the excessively large or early input of compressors of air conditioning units in coastal launching sites of our nation currently is solved, andthe energy-saving purpose of the air conditioning system is also achieved while the precision and stability of the air conditioning system are guaranteed.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, in particular to an air-conditioning system control method. Background technique [0002] At present, the control of the air conditioning system is generally realized by controlling the cooling capacity of the compressor through the temperature or dew point, such as figure 1 As shown, this control method, when calculating the cooling capacity of the compressor, lacks the consideration of the heat insulation in the air, so the calculated cooling capacity is often too large or the compressor is put into operation prematurely, although it can meet the requirements of most air conditioners. However, in an environment with high temperature and high humidity and a large temperature difference between day and night, it is easy to make the compressor input too early or too large, which will cause frost or even ice on the unit, thus affecting the normal operation of the air conditioning...

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Problems solved by technology

[0002] At present, the control of the air conditioning system is generally realized by controlling the cooling capacity of the compressor through the temperature or dew point, such as figure 1 As shown, this control method, when calculating the cooling capacity of the compressor, lacks the consideration of the heat insulation in the air, so the calculated cooling capacity is often too large or the compressor is put into operation prematurely, although it can meet the needs of most air conditioners. The control requirements of the system, but in the environment of high temperature, high humidity and large temperature difference between day and night, it is easy to make the compressor input too early or too large, which will cause the unit to frost or even freeze, thus affecting the normal operation of the air conditioning system

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