Energy-saving control method and control system of water chilling unit

An energy-saving control system and chiller technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as the need to improve the energy-saving effect and the complex control process, achieve energy saving and simplify data. The effect of collection

Active Publication Date: 2015-04-29
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology

[0005] The invention provides an energy-saving control method and control system of a chiller to solve the technical problems that the contr

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  • Energy-saving control method and control system of water chilling unit
  • Energy-saving control method and control system of water chilling unit

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Embodiment Construction

[0055] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0056] The energy-saving control method and control system of the chiller in this embodiment change the external parameters of the traditional tested chiller to calculate its cooling capacity, and compare the calculated cooling capacity with the cooling capacity of the design working condition and the actual liquid supply The temperature and the set liquid supply temperature are used to control the control strategy of the addition and subtraction of the unit. According to the performance curve of the actual operation of the chiller, the load percentage during the operation of the chiller is used as a comparison parameter. By comparing the actual The average load percentage corresponding to the running chiller and the set threshold value of loading an...

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Abstract

The invention discloses an energy-saving control method and a control system of a water chilling unit. Through acquiring the average load percentage and average liquid outlet temperature of all running water chilling units or actual liquid supply temperature of a liquid supply main pipe of a heat exchanging system, and comparing the average load percentage with current-level loading set threshold or deloading set threshold and comparing the average liquid outlet temperature or actual liquid supply temperature with the set liquid supply temperature, the implementation of loading or deloading or holding the current state of the water chilling units is determined; the data acquisition during the water chilling unit loading and deloading control process is simplified, the energy consumption of the water chilling units is saved further, it is proved that, 10-20% of energy consumption can be saved by the control method provided by the embodiment of the invention.

Description

technical field [0001] The invention relates to the field of chiller control, in particular to an energy-saving control method and control system for a chiller. Background technique [0002] The chiller is not only the "heart" of the central air-conditioning system, but also the "large energy consumer" of the central air-conditioning system. Energy-saving control of the chiller is very important, and it is a shortcut to "energy saving and consumption reduction". Therefore, chiller group control The system came into being. [0003] The existing chiller group control system determines the number of chillers and related facilities put into operation according to the actual cooling load, so as to achieve the best energy-saving state. Fully automatic operation and interlocking control of cooling water pumps, cooling towers, electric butterfly valves and other equipment. Among them, chilled water pumps, cooling water pumps, cooling towers and other equipment are all matched with...

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/0001F24F2140/50
Inventor 何阳陵
Owner CHINA HANGFA SOUTH IND CO LTD
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