Air conditioning water system and air conditioning water system control method
An air conditioner and controller technology, which is applied in the field of air conditioning water system and air conditioning water system control, can solve the problems of temperature difference and inability to perform natural cooling at the same time, and achieve the effect of improving reliability
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Embodiment 1
[0024] This embodiment provides an air-conditioning water system, figure 1 is the block diagram of the system, as figure 1 As shown, the system includes:
[0025] The chiller 11, the water supply branch pipe 12 and the return water branch pipe 13 connected to the cooling side of the chiller, a bypass pipeline 14 is arranged between the water supply branch pipe 12 and the return water branch pipe 13, and a flow regulating valve 15 is arranged on the bypass pipeline.
[0026] It should be noted that, in order to highlight the scheme of this application, figure 1 Only a part of the air-conditioning water system is shown, and it can be understood that the air-conditioning water system in this embodiment can also include components such as heat exchangers and cold storage tanks ( figure 1 not shown).
[0027] Optionally, the flow regulating valve in this embodiment may be a bypass butterfly valve.
[0028] Further, the branch return pipe of this embodiment is provided with a t...
Embodiment 2
[0037] This embodiment provides a method for controlling the air-conditioning water system, which can be used to control the air-conditioning water system disclosed in Embodiment 1 above, figure 2 is the flowchart of the method, such as figure 2 As shown, the method includes the following processing:
[0038]Step 201: Obtain the outdoor wet bulb temperature;
[0039] Step 202: When the acquired outdoor wet-bulb temperature is lower than the first threshold for a preset period of time, control the water system to perform natural cooling; when the acquired outdoor wet-bulb temperature is greater than the second threshold for a preset duration, Control the water system to perform chiller cooling. When the obtained outdoor wet-bulb temperature is not less than the first threshold and not greater than the second threshold, control the water system to switch between chiller cooling and natural cooling. For example, the first The threshold can be set to 1, and the second threshol...
Embodiment 3
[0051] This embodiment provides a method for controlling the air-conditioning water system, which has the same realization principle as the method for controlling the air-conditioning water system described in Embodiment 2 above. The control methods of the air-conditioning water system are described in the processes of refrigeration, chiller refrigeration and natural cooling mixed water operation.
[0052] Natural cooling operation of the water system: When the obtained outdoor wet bulb temperature is < TH1, for example, TH1 is set to 1, and this situation lasts for t time, the water system runs naturally cooling.
[0053] Cooling operation of water system chiller: when the obtained outdoor wet bulb temperature > TH2, for example, TH2 is set to 2, and this situation lasts for t time, the system will run in cooling mode; where TH2≥TH1.
[0054] The system switches between natural cooling and chiller cooling in the transitional season: when TH1≤outdoor wet bulb temperature≤TH2, ...
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