AI-based adaptive variable pressure difference control method for air conditioning variable flow water system

Abstract

The invention discloses an AI-based self-adaptive variable pressure difference control method for an air-conditioning variable flow water system, which is characterized in that it includes the following steps: Load forecast value; b Calculate the instantaneous required flow rate of each terminal equipment based on the predicted load value of each terminal and the maximum temperature difference between supply and return water for safe and stable operation of each terminal equipment; c Based on the pre-measured control pressure difference when all terminal valves are fully open ‑Corresponding database for each terminal flow, obtain multiple control differential pressure values ​​corresponding to different terminal equipment flow rates, and select the control differential pressure value with the largest value as the control differential pressure value for real-time control; dAccording to the control differential pressure value for real-time control The value and the real-time collected water supply and return pressure difference value are used to control the water pump controller so that the real-time collected supply and return water pressure difference value is close to the control pressure difference value. The present invention can more accurately meet terminal requirements, and has the advantages of simple, accurate, safe and stable control.

Description

technical field [0001] The invention relates to the field of HVAC automatic control, in particular to an AI-based adaptive variable pressure difference control method for an air-conditioning variable flow water system. Background technique [0002] In the central heating, ventilation and air conditioning of buildings, the air conditioning water system is usually used to transport cold and heat for indoor cooling and heating. With the development of social economy and the improvement of people's living standards, building energy consumption is getting higher and higher. In my country's building energy consumption, HVAC energy consumption occupies a relatively large proportion, accounting for about 30%-50%. 35% to 45% of the energy consumption of the air conditioner is consumed by the fans and pumps in the air conditioner water system. In this part of the energy consumption, more than 40% is consumed by various regulating valves. Therefore, it is of great significance to stud...

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

[0020] Therefore, due to the inaccurate control of the variable pressure difference control that has been studied so far, it will cause undercurrent at the end, and the control is complicated and other problems have not yet been promoted.

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