Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill

A technology of automatic control and control method of air conditioning, applied in the direction of air conditioning system, heating and ventilation control system, heating and ventilation safety system, etc. Energy consumption, ensure the effect of production process requirements

Inactive Publication Date: 2014-12-17
XI'AN POLYTECHNIC UNIVERSITY
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  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a control method for a composite PLC air-conditioning automatic ...

Method used

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  • Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill
  • Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill
  • Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill

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Embodiment

[0039] Select a workshop air-conditioning system to describe in detail the control and adjustment of the workshop air temperature and humidity.

[0040] Select the working condition that the actual humidity of the workshop is less than the set value. First, set the relative humidity of the workshop as 55%, and the actual humidity is Divided into four humidity ranges, the control routes are: (1) That is, when the difference between the relative humidity of the workshop and the set value is less than 1%, the air conditioner will maintain the original working state at the next moment. (2) When the difference between the relative humidity and the set value is 1% to 3%, the fresh air window 15 is closed by 10% every 5 seconds, and the return air window 16 is opened by 10% every 5 seconds. In order to ensure a certain amount of fresh air volume, until the fresh air window The opening degree of 15 is 10% and the opening degree of air return window 16 is 90%. During this peri...

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Abstract

The invention discloses a control method of a compound PLC (programmable logic controller) air conditioning automatic control system in a textile mill. The method is based on the compound PLC air conditioning automatic system in the textile mill; adjustment is performed by taking the humidity of shop air as a primary object according to a principle of humidity priority; according to a principle of 'increasing low and reducing high' adjustment is performed by sequentially increasing the frequency of equipment with low power consumption to meet production requirements when the humidity of the shop air is lower than a set standard, and adjustment is performed by sequentially reducing the frequency of equipment with high consumption to meet the production requirements when the shop humidity is higher than a set standard. The control method of the compound PLC air conditioning automatic control system in the textile mill further reduces the operation energy consumption of an air conditioning system on the basis that temperature and humidity requirements of a production shop are met, solves the problems of hysteresis quality and high energy consumption of the existing control method, guarantees production technological requirements of the shop, greatly reduces the operation energy consumption of the air conditioning system, and achieves the purposes of high efficiency and energy conservation.

Description

technical field [0001] The invention belongs to the field of air-conditioning control methods in textile mills, and in particular relates to a control method for a composite PLC air-conditioning automatic control system in textile mills. Background technique [0002] The current PLC air-conditioning automatic control system in textile mills can only adjust the fan frequency and water pump frequency according to the actual production conditions within a limited range, but this adjustment has certain characteristics of hysteresis and high energy consumption. Therefore, the current textile Factory PLC air-conditioning automatic control system is difficult to achieve the purpose of high efficiency and energy saving. Contents of the invention [0003] The object of the present invention is to provide a control method for a composite PLC air-conditioning automatic control system in a textile mill, which solves the problems of hysteresis and high energy consumption in the existin...

Claims

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Application Information

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IPC IPC(8): F24F11/02F24F5/00
Inventor 颜苏芊韩晓磊安小康余国妮
Owner XI'AN POLYTECHNIC UNIVERSITY
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