A comprehensive energy-saving system for industrial chillers and its intelligent control method

Abstract

The invention discloses an industrial water chilling unit comprehensive energy-saving system and an intelligent control method thereof. The industrial water chilling unit comprehensive energy-saving system comprises a refrigerating circulating system, a waste heat recycling system, a waste heat re-rising system and a low-environment-temperature unit energy-consumption-free running system. According to the intelligent control method of the industrial water chilling unit comprehensive energy-saving system, a collecting unit, an input unit, a communication unit, a CPU processing unit, a driving unit, an output unit, a low-voltage power source and a selection work mode are arranged. According to the industrial water chilling unit comprehensive energy-saving system and the intelligent control method of the industrial water chilling unit comprehensive energy-saving system, the unit comprehensive performance can be effectively utilized, the requirements for industrial cooling and freezing can be met; meanwhile, waste heat can be recycled and re-rises, an environment temperature unit is used for carrying out energy-consumption-free running, the use temperature is met, the efficiency of the unit is improved, and the use condition of the unit is expanded; and the energy efficiency ratio of the unit is improved, the energy consumption is saved, and the economic cost is reduced.

Description

technical field [0001] The invention relates to the technical field of energy-saving control of chillers, in particular to a comprehensive energy-saving system for industrial chillers and an intelligent control method thereof. Background technique [0002] At present, with the continuous improvement of my country's industrial level, in industrial manufacturing, especially in precision manufacturing, product manufacturing sites and manufacturing equipment must be subjected to constant temperature treatment to ensure product quality. In constant temperature treatment, cooling is one of the very important process steps; at present, the widely used cooling equipment is industrial chiller to cool the equipment. This kind of equipment needs to be used continuously, with long running time and high frequency of use; when the unit is running in winter or when the temperature is relatively low, the unit cannot be adjusted according to the ambient temperature, which consumes a lot of e...

AI Technical Summary

Problems solved by technology

This kind of equipment needs to be used continuously, with long running time and high frequency of use; when the unit is running in winter or when the temperature is relatively low, the unit cannot be adjusted according to the ambient temperature, which consumes a lot of energy and is not environmentally friendly

In order to solve the above problems, the air-cooled refrigeration device is generally used to produce cold water and the free cooling of the cooling tower is used to produce cold water. In the case of air-cooled refrigeration, the energy consumption of the compressor and the fan is relatively large. In addition, when the chiller is in supply operation, due to If the condensing temperature is too low, it is necessary to increase and adjust the condensing pressure, fan speed, etc., which reduces the reliability of the chiller; when the cooling tower is freely cooled, when the outdoor temperature is below zero in winter, the pipeline is prone to freezing. The application number is "200910131509.9" and the name is " A year-round cooling chiller with natural cooling and cold storage function", which consists of a compressor, a gas connecting pipe, a condenser, a liquid connecting pipe, a throttling device, and an evaporator to form a vapor compression refrigeration cycle; by opening the heat pipe branch on the heat pipe The gas valve, the heat pipe liquid valve connected in parallel with the throttling device and the evaporator liquid valve on the evaporator make the evaporator, the gas connecting pipe, the condenser and the liquid connecting pipe connected in sequence to form a refrigerant natural circulation loop; by opening the heat pipe gas valve , heat pipe liquid valve and cold storage liquid valve, so that the gas connecting pipe, condenser, liquid connecting pipe and cold storage tank are connected in sequence to form a natural circulation loop of refrigerant cold storage

[0003] However, the waste heat generated by the unit in the existing technical solutions cannot be well utilized, and is directly discharged into the atmosphere, which increases the greenhouse effect and causes a great waste of energy; moreover, the model is relatively single, the working efficiency of the unit is low, and the control is relatively simple. Unable to achieve intelligent and integrated control, and fail to achieve comprehensive energy-saving effect

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