Optimal configuration method for chilled pump operation in central air-conditioning chilled water secondary pump system
A technology for central air conditioning and operation optimization, which is applied in air conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc., to achieve the effects of obvious energy-saving optimization, low application costs, and a wide range of promotion.
Active Publication Date: 2021-04-06
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology
[0005] The present invention is aimed at the problem of energy-saving optimization of the refrigeration pump of the central air-conditioning refrigeration water secondary pump system. The secondary pump meets the user's chilled water delivery needs, and saves energy by rationally allocating the pressure loss borne by the primary pump and the secondary pump
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[0035] The optimal configuration method for the operation of the freezing pump of the secondary pump system of the chilled water in the central air conditioner. The secondary pump system of the chilled water in the central air conditioner meets the transportation needs of the user's chilled water by running the primary pump at a fixed frequency and running the secondary pump at a variable frequency. The pressure loss borne by the pump and the secondary pump achieves the purpose of energy saving, such as figure 1 As shown in the flowchart, the method specifically includes the following steps:
[0036] like figure 2 The system schematic diagram of the central air-conditioning chilled water delivery circuit of the example shown, each chiller is equipped with a primary pump, the chilled water generated by the chiller is collected in the primary water supply loop, and then the chilled water is sent to the secondary water supply through the secondary pump set. The chilled water in...
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The invention relates to a method for optimal configuration of refrigeration pump operation in a central air-conditioning refrigeration water secondary pump system. The primary pump operating at a fixed frequency and the secondary pump operating at a variable frequency meet the user's transportation needs for chilled water. According to a single primary pump, two For the performance of the secondary pump at the rated frequency, respectively determine the relationship between the flow rate and head and power of the primary pump and the secondary pump at variable frequency; determine the total pressure loss of the chilled water delivery circuit and determine the corresponding secondary pump in the chilled water delivery circuit The pressure loss that should be borne in the middle; to meet the constraints of flow and head supply, and aim at the minimum total power of the secondary pump, to optimize the number of secondary pumps to be opened; to optimize the primary pump power and The sum of the minimum total power of the corresponding secondary pumps is the minimum, and the optimal operating frequency of the primary pump and the optimal mode of the number of secondary pumps operating at the corresponding frequency are determined. The invention has the advantages of reasonable pressure loss ratio between the primary pump and the secondary pump, high energy saving rate, strong versatility and the like.
Description
technical field [0001] The invention relates to an equipment configuration operation optimization technology, in particular to a refrigeration pump operation optimization configuration method of a central air-conditioning refrigerated water secondary pump system. Background technique [0002] With the progress of society and the improvement of people's living standards, people's requirements for the comfort of air-conditioning systems are getting higher and higher, so high energy consumption is also accompanied. In order to enable the air-conditioning system to operate in an energy-saving manner, the central air-conditioning chilled water system has undergone the change from the production and distribution of chilled water to the primary pump system of the same system, to the production and distribution of chilled water to the secondary pump system with separate loops. . At the same time, with the advancement and popularization of frequency conversion speed regulation techn...
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IPC IPC(8): F24F5/00F24F11/46F24F11/64F24F11/65F24F11/85F24F11/88
CPCF24F5/0003F24F11/46F24F11/64F24F11/65F24F11/85F24F11/88
Inventor 张莉王龙朱勇军刘岗范进宇
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER