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Energy-saving group control method of host machine of central air conditioner

A technology for central air conditioning and central air conditioning system, applied in the field of central air conditioning host energy-saving group control, can solve the problems of high cooling consumption and no energy saving, and achieve the effect of improving energy efficiency ratio, improving efficiency and good energy saving effect.

Active Publication Date: 2014-08-13
广州市科维机电设备安装有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to propose an energy-saving group control method for central air-conditioning hosts, which can solve the problem of high cooling consumption in the existing control methods, resulting in no energy saving

Method used

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  • Energy-saving group control method of host machine of central air conditioner
  • Energy-saving group control method of host machine of central air conditioner
  • Energy-saving group control method of host machine of central air conditioner

Examples

Experimental program
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Embodiment 1

[0044] Such as figure 2 As shown, a central air-conditioning host energy-saving group control method, which is used in a central air-conditioning system in which multiple refrigeration hosts are controlled by a controller, and the multiple refrigeration hosts are connected in parallel; it includes the following steps:

[0045] Step S01, the user starts the central air-conditioning system.

[0046] Step S02. Obtain the current chilled water supply temperature T. If the current chilled water supply temperature T is greater than the system design temperature T0 and less than or equal to the set temperature T1, proceed to step S03; if the current chilled water supply temperature T is greater than the set temperature T1, Then enter step S08; generally, according to the national standard, the system design temperature T0 of the central air conditioner is 7°C, but it can also be designed according to the actual engineering.

[0047]Step S03, start a refrigeration host, go to step S...

Embodiment 2

[0063] Such as image 3 As shown, in extreme settings, it can be enforced that only one cooling unit is allowed to be turned on at a time. Then, the energy-saving group control method for central air-conditioning hosts in the second embodiment is specifically described as follows.

[0064] An energy-saving group control method for a central air-conditioning host, which is used in a central air-conditioning system in which multiple refrigeration hosts are controlled by a controller, and the multiple refrigeration hosts are connected in parallel; it includes the following steps:

[0065] Step S100, the user starts the central air-conditioning system.

[0066] Step S200, start a refrigeration host, go to step S300.

[0067] Step S300, judging whether the actual load Q1 of the current cooling host is loaded to the preset load SP1, if so, go to step S400, otherwise go to step S300; wherein, the preset load SP1 is less than the full load Q2 of the current cooling host, for example...

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Abstract

The invention relates to an energy-saving group control method of a host machine of a central air conditioner. The method comprises the following steps of: S200, starting a refrigerating host machine, and turning to a step S300; S300, judging whether the actual load Q1 of the current refrigerating host machine is loaded to a preset load SP1, and if so, turning to a step S400, otherwise, turning to the step S300; S400, judging whether the total load of a current central air-conditioning system meets a first condition or a second condition, and if the total load meets the first condition or the second condition, turning to a step S600, otherwise, turning to a step S500; S500, judging whether some refrigerating host machine is not started, and if so, turning to the step S200, otherwise, turning to the step S300; and S600, judging whether the current central air-conditioning system meets a load shedding condition and the number of the current running refrigerating host machines is more than 1, if so, turning off one of the refrigerating host machines, and turning to the step S300, otherwise, directly turning to the step S300. The method has the advantage of low cold consumption ratio.

Description

technical field [0001] The invention relates to an energy-saving group control method for central air-conditioning hosts, which can be widely used in central air-conditioning group control systems, building automation (BAS) systems, and central air-conditioning energy-saving control systems. Background technique [0002] In the current central air-conditioning system, multiple refrigeration hosts are generally configured to operate in steps to meet the operation needs under different load conditions, and a spare refrigeration host will be added. Such as figure 1 Shown is the control structure diagram of the current central air-conditioning system, which includes a controller and multiple refrigeration hosts. The multiple refrigeration hosts are connected in parallel and controlled by the same controller. The controller and the cooling host are connected through an interface to collect the current load of the cooling host. This interface can be in various interface forms (s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F24F11/02
Inventor 许晓瑜刘洪洲王颖陈井林沈建群
Owner 广州市科维机电设备安装有限公司