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Process water energy-saving constant-temperature control system and control method

A technology of constant temperature control and process water, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems that cannot be automatically determined, can not effectively use outdoor cold air for free refrigeration, and achieve energy saving and precise temperature control Effect

Inactive Publication Date: 2019-09-03
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system cannot effectively use the cold outdoor air for free cooling, and the system cannot automatically determine which refrigeration unit to start according to the size of the cooling load

Method used

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  • Process water energy-saving constant-temperature control system and control method
  • Process water energy-saving constant-temperature control system and control method
  • Process water energy-saving constant-temperature control system and control method

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Embodiment Construction

[0052] Below in conjunction with accompanying drawing, the present invention will be further described:

[0053] refer to figure 1 , an energy-saving constant temperature control system for process water, including two parts: a refrigeration unit cooling system and a process water system;

[0054] The cooling system of the refrigeration unit is composed of the condenser of the refrigeration unit, the cooling tower, the cooling water circulation pump and the corresponding valves, which is mainly used for cooling the condenser of the refrigeration unit;

[0055] The process water system is composed of the evaporator of the refrigeration unit, the process water circulation pump, and the corresponding pipeline valves;

[0056] The free cooling system for process water in winter is composed of cooling tower, cooling water circulation pump, plate heat exchanger, process water circulation pump and corresponding pipeline valves.

[0057] Cooling system of the refrigeration unit: whe...

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Abstract

The invention belongs to the technical field of laboratory process water systems, and relates to a process water energy-saving constant-temperature control system and control method. The system comprises a refrigerating unit cooling system and a process water system, wherein the refrigerating unit cooling system comprises four cooling towers, five refrigerating units and a plate heat exchanger; the process water system comprises a primary circulating pump and a secondary side circulating water pump; condenser outlets of the refrigerating units are connected with the cooling towers through water collectors of water inlets of the circulating water pumps, and return to condenser inlets of the refrigerating units through upper water tower valves and bypass valves; and evaporator outlets of therefrigerating units and a water collector pipeline of the primary circulating pump are connected with water supply of a laboratory, and the secondary side circulating water pump is connected to a laboratory water return pipeline through the water collector pipeline, is connected with a switch valve and is connected with evaporator inlets of the refrigerating units. The control method comprises the steps of working mode judgment, winter mode valve water pump control and summer mode control. According to the system, the constant-temperature control of the process water system is realized, namely, accurate temperature control is realized, and the electric energy is saved.

Description

technical field [0001] The invention belongs to the technical field of laboratory process water systems, and in particular relates to a process water energy-saving constant temperature control system and a control method. Background technique [0002] There are many constant temperature equipment in the laboratory that need to be cooled with chilled water (such as: AVL fuel consumption meter, engine intake air conditioner, engine thermal shock laboratory equipment, laboratory air supply and exhaust system, etc.). [0003] The conventional process water system uses the refrigeration unit to cool the process water in the laboratory, and uses the outdoor cooling tower to cool the condenser of the refrigeration unit to ensure the normal operation of the refrigeration unit and realize the constant temperature control of the process water system at 7-12 degrees Celsius. The system cannot effectively use the cold outdoor air for free cooling, and the system cannot automatically det...

Claims

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Application Information

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IPC IPC(8): F25D16/00F25D19/04F25D17/02F25D29/00F25B41/00F25B41/40
CPCF25D16/00F25D19/04F25D17/02F25D29/00F25B41/00F25D2600/06
Inventor 李洪东吉宏宇郑吉彪李傲王学双刘春来孙丽林明晶左桐瑀
Owner CHINA FIRST AUTOMOBILE
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