Optimum start-stop control method of central air-conditioning refrigerating system

Abstract

The invention discloses an optimum start-stop control method of a central air-conditioning refrigerating system. The method comprises the following step: establishing a central air-conditioning precooling load model and optimum start control of the refrigerating system based on the model. Meanwhile, a control network system needed to implement the optimum start control is included. The control network comprises three-layer network architectures which are separately a monitoring center, a trunk transport network and a field control network, wherein the monitoring center uses the Ethernet, the trunk transport network uses the fiber optic Ethernet and the field control network uses the Ethernet; the field control network comprises three sub systems which are separately a cold station controlsystem, an energy consumption metering and analyzing system and a terminal air conditioner control system, wherein the terminal air conditioner is formed by a plurality of regional control systems. Onthe premise of guaranteeing that parameters of the air conditioner reach the standard, optimum energy consumption of the air conditioning system can be achieved, and the safe reliability of system operation is guaranteed.

Description

technical field [0001] The invention relates to the technical field of energy and energy saving, and belongs to the field of HVAC automation, in particular to an optimal start-stop control method for a central air-conditioning refrigeration system. Background technique [0002] With the development of urban scale, building energy consumption has been ranked alongside industrial energy consumption and transportation energy consumption, and has become the three "big energy consumers" of energy consumption in my country. In particular, building energy consumption has shown a sharp upward trend along with the continuous increase in the total number of buildings and the improvement of living comfort. Building energy consumption will surpass the industrial and transportation industries, ranking first in social energy consumption, and the energy consumption of central air-conditioning is the main part of building energy consumption. my country's building energy consumption has acco...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the current central air-conditioning refrigeration system on the start-up control strategy, which generally adopts manual timing start-up or manual start-up, and the number and time of start-up are mechanized by default. A variety of factors, such as comprehensive judgment of the optimal start-up mode, resulting in poor stability of system automation operation, which in turn affects the effect of terminal air-conditioning and wastes energy. An optimal start-stop control method for central air-conditioning and refrigeration systems is proposed.

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