Intelligent energy conservation operation control system and method of central air conditioner

Abstract

The invention discloses an intelligent energy conservation operation control system and method of a central air conditioner. The intelligent energy conservation operation control system of the centralair conditioner comprises an upper computer, a telecommunication module, a PLC, a temperature sensor, a water pump frequency converter, a network module, an equipment host, a displayer and an operating table. The intelligent energy conservation control system is mounted in the upper computer and the upper computer controls the water pump frequency converter to work by the PLC; meanwhile, the upper computer reads the data of the equipment host by the network module and obtains the environment temperature value measured by the temperature sensor by the PLC; all the information that the upper computer gets are locally displayed by the displayer and compiled and operated on site by the operating table; and the telecommunication module obtains all the information that the upper computer gets by the PLC and transmits the information to the network for monitoring. By means of the system and the method, the control accuracy is improved, the host is equipped with the function of tracking the environment and adjusting the load, the system energy efficiency can be greatly improved and the management difficulty of an air conditioner system can be lowered.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, and relates to a central air-conditioning intelligent energy-saving operation control system and method. Background technique [0002] The central air-conditioning system includes the refrigeration host and the equipment that assists the operation of the host. The auxiliary equipment includes the cooling water system for exchanging heat between the system and the outside world, the chilled water system for exchanging heat between the system and the room, and the circulation pump that circulates the cooling water and the chilled water respectively. The cooling-only system also has a water cooling tower or an air cooling tower that directly exchanges heat with the environment. [0003] The central air-conditioning system in the existing market controls the amount of cooling water basically by starting and stopping the water pump or installing a water pump frequency converter. After the water ...

AI Technical Summary

Problems solved by technology

However, the current frequency conversion control is basically controlled by the temperature difference of cooling water. The reduction of cooling water will cause the condensation pressure of the air conditioner host to increase, which will increase the energy consumption of the host. Improving the energy efficiency of air conditioning systems

[0004] In addition, the start-stop control of the existing central air-conditioning system is mainly done manually, and the unattended performance is poor. At the same time, the existing central air-conditioning system only automatically adjusts the cooling / heating load of the main engine, but the water supply temperature does not follow. The real-time adjustment of load changes fails to make full use of the different requirements for thermal energy grades in different periods. The above two aspects seriously restrict the real energy efficiency of the air conditioning system.

Images