Air-conditioning water system control system

Abstract

The invention discloses an air-conditioning water system control system. The system is characterized by comprising a terminal load anticipator connected with an outdoor data detection instrument outside a room where each air-conditioning terminal is located, a terminal equipment instantaneous required flow calculation module used for obtaining the maximum supply and return water temperature difference of safe and stable operation of each air-conditioning terminal, a control differential pressure generator connected with the terminal equipment instantaneous required flow calculation module at one end and connected with a water pump controller at the other end, and a water pump controller connected with a secondary pump in a power unit of the air-conditioning water system, wherein the water pump controller can conduct PID control on the water pump number and frequency of the secondary pump according to the deviation of the actual water supply and return pressure difference and the control pressure difference set value which are collected in real time. The system can more accurately meet terminal requirements, and has the advantages of simplicity, accuracy, safety and stability in control.

Description

[0001] This application is a divisional application for the patent "AI-based Adaptive Variable Pressure Difference Control Method for Air Conditioning Variable Flow Water System" with the application number of 202011137597.6 and the application date of 2020-10-22. technical field [0002] The invention relates to the field of HVAC automatic control, in particular to an air conditioning water system control system. Background technique [0003] In the central heating, ventilation and air conditioning of buildings, the air-conditioning water system is usually used to transport cold and heat to provide indoor cooling and heating. With the development of social economy and the improvement of people's living standards, the energy consumption of buildings is getting higher and higher. In my country's building energy consumption, HVAC energy consumption accounts for a large proportion, accounting for about 30%-50%. 35% to 45% of the energy consumption of air-conditioning operation...

AI Technical Summary

Problems solved by technology

Since the valve opening signal has a certain delay and is easy to fluctuate, it is easy to cause inaccurate control and oscillation of the differential pressure setting value

[0021] Therefore, due to the inaccurate control of the variable pressure difference control that has been studied at present, it will cause undercurrent at the end, and the control is complicated and other problems have not yet been promoted.

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