Central air conditioning system global optimization energy-saving control method and device based on model

Abstract

The invention provides a method for controlling a global optimization of energy saving for a central air conditioning system based on a model, comprising a control module, a multichannel data acquisition card and control card, a refrigerating unit data collector and a controller, a humidity sensor, a temperature sensor, a flow sensor, a watt transducer, a water pump frequency converter, a fan frequency converter, an RS232 / RS485 conversion module and a RS485 / RS232 conversion module. The whole system can be operated under the condition of most energy saving according to an operating condition of optimized energy saving of each energy consumption device acquired by calculation of a calculation module by taking energy consumption modules of a refrigerating unit, a water pump and a fan and an ARMA air conditioning load forecasting model. The invention thoroughly concerns an influence of the operating condition of each power device in the system to the energy consumption of the whole system, takes a control strategy based on a forecasted air conditioning load, and performs an online update for the energy consumption modules of key energy consumption devices in the system, thereby greatly improving an effect of optimization of energy saving for the central air conditioning system.

Description

technical field [0001] The present invention relates to a centralized air conditioning system optimization energy-saving control method and device, in particular to a model-based centralized air-conditioning system overall optimization energy-saving control method and device. Background technique [0002] With the development of urban modern buildings, central air-conditioning systems have become an important part of building equipment, and building energy consumption has also increased significantly. It can be seen that the optimal energy-saving control of central air-conditioning systems is an important way to save energy in buildings . Due to the limitation of the design concept of the current central air-conditioning system, the design capacity of the air-conditioning system of most buildings in my country obviously exceeds the actual load demand of the building. In order to reduce the energy waste caused by this, the optimal energy-saving operation control of the centra...

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Problems solved by technology

However, this optimized energy-saving control device only aims at local energy-saving of the system, and cannot achieve the overall energy-saving goal of the central air-conditioning system. In addition, this device ignores the impact of the operating conditions of the refrigeration unit on the energy consumption of the entire system, which will inevitably reduce its energy consumption. Energy saving control effect

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