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Quality and regulation control method and system for chill station of central air conditioner

A central air-conditioning system, central air-conditioning technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of low energy saving efficiency, relying on frequency conversion speed regulation, etc., to achieve system stability and short installation period. , the effect of convenient on-site installation

Inactive Publication Date: 2007-12-19
CEE TECH & MANAGEMENT
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and defects of the prior art, the object and task of the present invention is to provide a method and system for controlling the quality of a central air-conditioning refrigeration station, that is, by establishing a system for controlling the chillers, cooling towers, chilled water pumps and cooling water pumps in the refrigeration station. The related control method and system, control the operation of chillers and cooling towers in the freezing station with variable water temperature (i.e. "quality" adjustment), control the operation of chilled water pumps and cooling water pumps with variable water volume (i.e. "quantity" adjustment), achieve quality and save electricity Energy consumption and the overall efficiency of the refrigeration station are the highest, so as to solve the problem of low energy-saving efficiency in the energy-saving control of the existing refrigeration station only relying on frequency conversion speed regulation

Method used

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  • Quality and regulation control method and system for chill station of central air conditioner
  • Quality and regulation control method and system for chill station of central air conditioner
  • Quality and regulation control method and system for chill station of central air conditioner

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Embodiment

[0058] The method and system of the present invention will be described in detail below with reference to the accompanying drawings.

[0059] The quality is adjusted and controlled by the host 17 to process the monitored parameters and calculate the operating load rate of the central air-conditioning refrigeration station. According to the model curve pre-stored in the quality and adjustment control host, the control output parameters are calculated: the refrigeration water supply temperature and the cooling tower outlet temperature of the quality adjustment, the frozen water flow rate and the cooling water flow rate adjusted. This part adopts industrial programmable controller PLC with computing function.

[0060] An example of the control curve of the cooling water supply temperature is shown in Figure 3.

[0061] The quality is adjusted and controlled by the host 17 and the cooling water supply temperature is output to the chiller control unit 16. The chiller control unit can b...

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Abstract

The present invention relates to a quality regulation control method of central air-conditioning refrigerating station and its system. It belongs to a method for controlling operation of central air-conditioning refrigerating station and its system. Said system includes internal weather parameter monitoring portion, central air-conditioning system operation parameter monitoring portion, quality regulation control main machine, cold water machine unit control unit for controlling water supply temperature for refrigeration, cooling tower frequency conversion control unit for controlling cooling tower outlet temperature, refrigerating water pump frequency conversion control unit and cooling water pump frequency conversion control unit. Besides, said invention also provides the concrete steps of its quality regulation control method.

Description

Technical field [0001] The invention relates to an energy-saving control method and system for equipment of a central air-conditioning refrigeration station, which is suitable for automatic control of a central air-conditioning refrigeration station and belongs to the field of air-conditioning energy-saving applications. Background technique [0002] The main equipment of the central air conditioning refrigeration station is chillers, chilled water pumps, cooling water pumps, and cooling towers. In the central air-conditioning system, the refrigeration station accounts for more than half of the overall energy consumption, which is the focus of energy-saving work. [0003] At present, the energy-saving operation control of central air-conditioning refrigeration station equipment generally adopts the method of energy-saving operation of chilled water pumps, cooling water pumps and cooling towers with frequency conversion speed control, while chillers often adopt the method of start...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 王鹏飞
Owner CEE TECH & MANAGEMENT
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