Control method of water chilling unit

A chiller and control method technology, applied in the direction of heating and ventilation control systems, heating methods, mechanical equipment, etc., can solve the problems of reduced comfort, increased power consumption of chillers, and fluctuations in outlet air temperature, so as to avoid power consumption The effect of volume increase

Active Publication Date: 2021-11-16
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention aims to solve the above-mentioned technical problems, that is, to solve the problems existing in the existing chiller control method that frequent startup and shutdown of the chiller leads to increased power consumption, and the fluctuation of the indoor air outlet temperature also leads to a decrease in indoor comfort. The invention provides a control method for chillers

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  • Control method of water chilling unit
  • Control method of water chilling unit

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Embodiment approach

[0048]As a preferred implementation of the above-mentioned control method provided in this embodiment, it also includes the following steps: S101, obtaining the actual inlet water temperature T of the chilled water of the chiller 进 .

[0049] Before step S4, it also includes: S31, calculating the adjustment rate V of the target outlet water temperature of the chiller; wherein, V=(T 进 -T 出 )*(T 1 -T 出 )*K 3 ; The unit of V is ℃ / s, where K 3 is a constant;

[0050] Step S4 also includes: S41, controlling the target outlet water temperature of the chiller by T 0 To adjust the speed V to T x .

[0051] It should be noted that step S101 only needs to be executed before step S4. For example, step S101 may be executed synchronously with step S1, or may be executed after step S3.

[0052] In the control method of the water chiller provided in this embodiment, after re-determining the target outlet water temperature T x Afterwards, the adjustment rate V of the target outlet ...

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Abstract

The invention relates to the technical field of air conditioners, and particularly provides a control method of a water chilling unit. The control method provided by the invention aims to solve the problem that according to an existing control method for the water chilling unit, the water chilling unit is frequently started and stopped, and consequently power consumption is increased. In order to achieve the purpose, whether the water chilling unit meets a set condition or not is judged, when the water chilling unit meets the set condition, re-determined target water outlet temperature Tx is higher than original target water outlet temperature T0, when the water chilling unit conducts refrigeration operation according to the re-determined target water outlet temperature, the load of the water chilling unit can be rapidly reduced, and the problem that the water chilling unit is shut down due to the fact that the actual water outlet temperature of chilled water is quickly lower than shutdown temperature Tt due to the fact that the load reduction speed of the water chilling unit is not matched with the reduction speed of the load requirement when the water chilling unit is controlled according to the original target temperature T0 is solved. According to the method, the problem of power consumption increase caused by frequent start and stop of the water chilling unit can be avoided.

Description

technical field [0001] The invention relates to the technical field of air conditioning, and specifically provides a method for controlling a chiller. Background technique [0002] Chillers include refrigerant systems, cooling water systems and chilled water systems. When the chiller is cooling the room, the compressor of the refrigerant system drives the refrigerant to circulate between the condenser and the evaporator, and an electronic expansion valve is installed between the condenser and the evaporator. The exhaust port enters the condenser and flows to the evaporator after passing through the electronic expansion valve, and finally flows back from the outlet of the evaporator to the suction port of the compressor to complete a refrigerant cycle. [0003] The condenser radiates heat to the outside, and the cooling water heat exchanger in the cooling water system exchanges heat with the above condenser, and the cooling water pump drives the water in the cooling water sy...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/61F24F11/64F24F11/85F24F11/88F24F13/30
CPCF24F5/001F24F11/61F24F11/64F24F11/85F24F11/88F24F13/30Y02B30/70
Inventor 王超安普光张捷徐龙靖
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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