Overall energy saving control device of central air conditioner

Abstract

The invention discloses an overall energy saving control device of a central air conditioner. The overall energy saving control device is characterized by comprising central air conditioner equipment and pipelines, detecting equipment, executing equipment, data collecting and control equipment and industrial personal computer, wherein the detecting equipment is used for detecting the operation and environment data of the central air conditioner equipment; the executing equipment is used for executing a control instruction to allow the central air conditioner equipment to operate according to the instruction; the data collecting and control equipment is used for collecting the operation data and environment data of the central air conditioner; the industrial personal computer is used for processing the collected operation data and environment data and transmitting data processing results to the data collecting and control equipment. The overall energy saving control device of the central air conditioner has the advantages that the operation data and environment data of the central air conditioner are collected to generate and update structure-uniformed prediction models, and the current performance of each central air conditioner equipment is reflected accurately; overall energy saving optimization of the central air conditioner is achieved while central air conditioner water system balance and heat and mass balance are achieved.

Description

technical field [0001] The invention relates to energy-saving control, in particular to a central air-conditioning overall energy-saving control device. Background technique [0002] With the development of social economy, the proportion of building energy consumption in the total energy consumption of the whole society is getting higher and higher, reaching about 30%, and in the whole building energy consumption, the energy consumption of central air conditioning accounts for about 40%~ Therefore, fully tapping the energy-saving space of the central air-conditioning system will not only bring huge energy-saving benefits, but also help to achieve the current increasingly difficult energy-saving and emission reduction goals. [0003] At present, the design of the central air-conditioning system is mostly calculated according to the design daily load, and the design daily load is basically close to the maximum load of the year. Partial load conditions, not only the equipment ...

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Problems solved by technology

[0003] At present, the design of the central air-conditioning system is mostly calculated according to the design daily load, and the design daily load is basically close to the maximum load of the year. Partial load conditions, not only the equipment may have unfavorable operating conditions in low load conditions, but also the energy consumption of the entire central air conditioning system will increase

[0004] Conventional central air-conditioning automatic control systems mainly control different equipment, such as chillers, water pumps, cooling towers, and air-conditioning boxes. This traditional control method cannot reflect the interaction between different devices in the system, which may lead to a substantial increase in the energy consumption of the entire air conditioning system while saving energy for a certain device

[0005] In addition, the existing prediction model-based central air-conditioning energy-saving control methods and systems have problems such as complex prediction models, lack of versatility, rough update methods, and lack of a unified control system. They all belong to local energy-saving control, and most of the prediction There is no way for the model to fully take into account system delays, equipment performance attenuation or performance deviation after long-term use

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