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A method for optimizing the water temperature adjustment time of a chiller

A technology of water temperature adjustment and optimization method, which is applied in the direction of control/regulation system, temperature control, instrument, etc., can solve the problem of not being checked, and achieve the effect of improving adjustment efficiency and reducing water temperature adjustment time

Active Publication Date: 2022-04-19
FTDEVICE TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The working efficiency of the chiller is directly related to the water temperature adjustment time, and the water temperature adjustment time is directly related to the key parameters such as the water volume. The study of the relationship between the water temperature adjustment speed and the key parameters is conducive to improving the working efficiency of the chiller. No relevant studies were found

Method used

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  • A method for optimizing the water temperature adjustment time of a chiller
  • A method for optimizing the water temperature adjustment time of a chiller
  • A method for optimizing the water temperature adjustment time of a chiller

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Experimental program
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specific Embodiment approach 1

[0058] A method for optimizing the water temperature adjustment time of a chiller under this specific embodiment, the flow chart is as follows figure 2 shown, including the following steps:

[0059] Step a. In the n-time working environment, monitor the following key parameters:

[0060] Water temperature adjustment time t i , where i=1,2,...,n;

[0061] Water volume N i , where i=1,2,...,n;

[0062] The difference between the current water temperature and the target water temperature ΔT 1i , where i=1,2,...,n;

[0063] Difference between current water temperature and ambient temperature ΔT 2i , where i=1,2,...,n;

[0064] fan speed n i, where i=1,2,...,n;

[0065] Step b. Determine the independent variable and dependent variable:

[0066] Because in the adjustment process, the water temperature adjustment time is expected to be the shortest, and the water temperature adjustment time is related to the water volume, the difference between the current water temperatur...

specific Embodiment approach 2

[0094] A method for optimizing the water temperature adjustment time of a chiller under this specific embodiment, the flow chart is as follows image 3 As shown, on the basis of the specific embodiment 1, the further definition also includes the following steps:

[0095] Step h. Under the condition of the same secondary factors, compare the change of water temperature adjustment time before and after the change of key parameters, if:

[0096] The water temperature adjustment time is shortened, and the optimization is successful;

[0097] The water temperature adjustment time becomes longer, and the key parameters are adjusted in the opposite direction.

specific Embodiment approach 3

[0098] A method for optimizing the water temperature adjustment time of a chiller under this specific implementation mode uses the FTD-WTC001 chiller developed by our company as the test object. The front panel, rear panel, upper panel and controller of the chiller are as follows Figure 4-7 shown.

[0099] Under different working conditions, key parameters are monitored as shown in the table:

[0100] Table 1 key parameter record form

[0101]

[0102] Based on the key parameters in Table 1, the method of the present invention is simulated with Matlab 2014, and the program is as follows:

[0103]

[0104]

[0105] The result of running the program is as Figure 8 As shown, the following results can be seen from the figure:

[0106] alpha 1 =0.8102

[0107] alpha 2 =0.8002

[0108] alpha 3 =0.5981

[0109] alpha 4 =0.6610

[0110] From the above results, it can be seen that the water volume is the most critical factor affecting the adjustment time, followed...

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Abstract

A method for optimizing the water temperature adjustment time of a chiller according to the present invention belongs to the technical field of chillers and temperature control; the optimization method performs the following steps in sequence: step a, monitor key parameters in multiple working environments; step b, determine independent variables and factors variable; step c, select the median of key parameters; step d, normalize key parameters; step e, calculate the absolute deviation between the independent variable and the dependent variable; step f, calculate the influence coefficient of the dependent variable; The influence of variables; the method for optimizing the water temperature adjustment time of the chiller in the present invention uses the water temperature adjustment time as the dependent variable, takes the factors affecting the water temperature adjustment time as the independent variables, and designs an algorithm that can characterize the degree of influence of each variable on the dependent variable. Furthermore, in order to reduce the water temperature adjustment time of the chiller and improve the adjustment efficiency, the guidance direction of how to adjust the independent variable most effectively is given.

Description

technical field [0001] The invention discloses a method for optimizing the water temperature adjustment time of a chiller, which belongs to the technical field of chillers and temperature control. Background technique [0002] Industrial chillers are widely used in chemical industry, electronics, pharmaceuticals, food processing and other fields where chilled water is required for various industrial refrigeration processes. According to the working principle, chillers can be divided into ice-cooled chillers, water-cooled chillers and air-cooled chillers. Among them, the water-cooled chiller has mature technology, low manufacturing cost and the most widely used. [0003] The schematic diagram of the working principle of the water-cooled chiller is as follows: figure 1 shown. The shell and tube evaporator is used to exchange heat between the water and the refrigerant. The refrigerant system absorbs the heat load in the water and cools the water to produce cold water. The he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 王强金永斌贺涛丁宁朱伟
Owner FTDEVICE TECH (SUZHOU) CO LTD