Group control method for central air conditioning refrigerating unit

A technology for refrigeration units and central air conditioners, applied in the field of intelligent building systems, can solve problems such as ineffective energy saving and inability to reflect load changes, and achieve the effects of saving operating costs, improving equipment utilization efficiency, and reducing energy consumption

Active Publication Date: 2013-10-30
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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Problems solved by technology

Can not reflect load changes,

Method used

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  • Group control method for central air conditioning refrigerating unit

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Embodiment Construction

[0031] The present invention adopts the heat control method to carry out the group control of the refrigerating unit, the purpose is to correctly and properly solve the control within the scope of the working point area, to measure the chilled water flow at some points and the air conditioning load of the whole building, as a starting or Judgment basis for stopping a refrigeration unit.

[0032] When the present invention is realized, first measure the chilled water supply and return water temperature and the supply (return) water flow rate to obtain the temperature difference and flow signal, then calculate the actual cooling capacity required by the two signals according to the thermodynamic formula, and then compare the cooling capacity value with the chiller The cold production is compared, and then the control of the start-stop and operation quantity of the chiller is realized.

[0033] Specifically, the central air-conditioning refrigeration unit group control method pro...

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Abstract

The invention provides a group control method for a central air conditioning refrigerating unit. The group control method for the central air conditioning refrigerating unit comprises step A, entering into a step B when the water outlet temperature of a refrigerating unit basically achieves a stable temperature; step B, measuring the temperature and flow amount for water supply and water return of chilled water to obtain temperature difference and the flow amount of the water supply and the water return; step C, computing the load according to the temperature difference and the flow amount of the water supply and the water return; step D, controlling loading and unloading of refrigerating machines of the refrigerating unit. According to the group control method for the central air conditioning refrigerating unit, the group control algorithm for the refrigerating unit is achieved through thermal, the refrigerating unit is operated under an economical and energy saving state and the purposes of prolonging the service life of the device and reducing the energy consumption are achieved. The group control method for the central air conditioning refrigerating unit has a good popularization prospect in the fields of building automatic control and building energy saving.

Description

technical field [0001] The invention relates to a building intelligent system, in particular to a group control method for a central air-conditioning refrigeration unit. Background technique [0002] Judging from the current distribution of building electricity loads, according to statistics, the electricity consumption of cold source equipment accounts for 40% of the electricity consumption of the entire building. Especially during the peak period of electricity consumption, there will often be insufficient cooling of the building, which will cause the owner's electricity bill to continue to rise. [0003] In recent years, the reasonable control of the group control system of the refrigeration unit in the building plays an increasingly obvious role in building energy saving. By adopting a reasonable refrigeration unit group control method, the overall cooling of the building can not only meet the comfort required by the users in the building, but also achieve the goal of e...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 郑世宇黄兵
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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