A cooling tower fan energy saving control method and system

An energy-saving control system and energy-saving control technology, applied in heat exchange equipment, lighting and heating equipment, etc., can solve the problems of low utilization efficiency of cold source, energy waste, inaccurate setting of cooling tower outlet water temperature, etc.

Active Publication Date: 2020-07-07
ZHUHAI PILOT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the purpose of this application is to provide an energy-saving control method and system for cooling tower fans to improve the inaccurate (too high or too low) setting of the outlet water temperature of existing cooling towers, which leads to low utilization efficiency of cold sources or energy consumption. waste problem

Method used

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  • A cooling tower fan energy saving control method and system
  • A cooling tower fan energy saving control method and system
  • A cooling tower fan energy saving control method and system

Examples

Experimental program
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no. 1 example

[0029] see figure 1 , which is an energy-saving control method for cooling tower fans applied to cooling towers provided by the embodiment of the present application, which will be combined below figure 1 Describe the steps involved. Wherein, the cooling tower is provided with a frequency conversion fan.

[0030] Step S101: Obtain the current actual outlet water temperature of the cooling tower.

[0031] When it is necessary to control the heat dissipation of the cooling tower, the current actual outlet water temperature of the cooling tower is obtained. By setting a temperature sensor at the water outlet of the cooling tower, the actual outlet water temperature of the cooling tower can be monitored in real time. As an implementation, the currently acquired temperature collected by the temperature sensor can be used as the current actual outlet water temperature of the cooling tower. As yet another implementation manner, the average value of the temperatures collected by th...

no. 2 example

[0055] The embodiment of the present application also provides a cooling tower fan energy-saving control system 100 applied in a cooling tower, such as Figure 4 shown. The cooling tower fan energy-saving control system 100 includes: a memory 120 , a fan control device 130 , a temperature sensor 110 and a variable frequency fan 140 .

[0056] The fan control device 130 is electrically connected to each other directly or indirectly with the components in the memory 120 , the temperature sensor 110 and the variable frequency fan 140 to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The temperature sensor 110 is used to collect the outlet water temperature at the outlet of the cooling tower, and transmit it to the fan control device 130 . The memory 120 may be a high-speed random access memory 120 (Random Access Memory, RAM), or a non-volatile memory 120...

no. 3 example

[0062] The embodiment of the present application also provides a non-volatile computer-readable storage medium (hereinafter referred to as the storage medium), on which a computer program is stored, and the computer program is executed by a processor (such as the fan control device 130) to execute the above-mentioned like figure 1 The steps of the cooling tower fan energy-saving control method. For specific implementation, reference may be made to the method embodiments, which will not be repeated here.

[0063] Specifically, the storage medium can be a general-purpose storage medium, such as a removable disk, a hard disk, etc. When the program code on the storage medium is run, the cooling tower fan energy-saving control method shown in the above-mentioned embodiments can be executed.

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PUM

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Abstract

The invention discloses a cooling tower draught fan energy saving control method and system, and belongs to the technical field of refrigeration. The method is applied to a cooling tower. The coolingtower is provided with a frequency conversion draught fan. The method comprises the steps that the current actual water outlet temperature of the cooling tower is obtained; whether the relation between the current actual water outlet temperature and the current set water outlet temperature meets the preset condition or not is judged; when the relation between the current actual water outlet temperature and the current set water outlet temperature meets the preset condition, the frequency conversion draught fan is controlled to run for the first preset time duration based on the preset water outlet temperature, wherein the preset water outlet temperature is smaller than the current actual water outlet temperature; the actual water outlet temperature of the cooling tower within the first preset time duration is obtained; the target water outlet temperature is determined based on the actual water outlet temperature within the first preset time duration; and the frequency conversion draught fan is controlled to run based on the target water outlet temperature. By means of the method, outer parameters can be monitored and utilized for adjusting the water outlet temperature of the cooling tower in real time, energy is saved while the ideal refrigeration effect is achieved, and the refrigeration effect of a cold source control system is improved.

Description

technical field [0001] The application belongs to the technical field of refrigeration, and in particular relates to a cooling tower fan energy-saving control method and system. Background technique [0002] In the cold source control system, the cooling tower is the main operating equipment for heat dissipation. Whether it can operate efficiently and energy-saving is not only related to its own operating efficiency, but also greatly affects the cooling effect of the cold source control system. Taking the data center as an example, the cold source control system accounts for about 40-60% of the energy consumption of the data center. Among them, every 1°C decrease in the outlet water temperature of the cooling tower can save energy by 2%-5%. It can be seen that the fluctuation of temperature is very important for the energy saving of the entire cold source control system. [0003] The existing cold source control system captures the set value of the outlet water temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F27/00
CPCF28F27/003
Inventor 徐义李龙郭玉娟李立群彭洁
Owner ZHUHAI PILOT TECH
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