District air-conditioner distributed secondary pump system

A secondary pump and regional technology, applied in air conditioning systems, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve the problems of large resistance differences and high energy consumption in water systems, achieve hydraulic balance and save investment , the effect of reducing energy consumption

Active Publication Date: 2013-11-06
南京市建筑设计研究院有限责任公司
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AI Technical Summary

Problems solved by technology

The resistance of each water loop in the design sometimes varies greatly. The conventional method for selecting the pump head is to determine the pump head by the resistance of the most unfavorable loop, although the flow on this loop may only be a small part of the total flow of the system. It is also necessary to choose a large-lift pump, and other loops have to rely on resistance elements such as balance valves or regulating valves to balance, resulting in high energy consumption in the water system

Method used

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  • District air-conditioner distributed secondary pump system
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  • District air-conditioner distributed secondary pump system

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Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0027] figure 1 It is a schematic flow chart of a high-efficiency energy-saving decentralized secondary pump system for district cooling of the present invention. Regional air conditioning decentralized secondary pump system such as figure 1 As shown in the dashed box, it can be roughly divided into the district cooling station side and the user side. The user side can be divided into two types: indirect connection and direct connection according to different connection methods. The indirect connection method can be further divided into two types according to the number of user terminals. Single-user terminal and multi-user terminal parallel connection form, direct connection can be divided into two forms according to whether there is mixed water.

[0028] Such as figure 1 As shown, the main configurations on the side of the district cooling station include: refri...

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Abstract

The invention aims to provide a district air-conditioner distributed secondary pump system, which comprises refrigeration main engines 1, chilled water primary pumps 2, a water segregator 3, a water collector 4, and a profit and loss tube 5. According to the invention, in the two forms of an indirect connection 1 and an indirect connection 2, a chilled water secondary pumps 6, plate heat exchangers 7, user chilled water circulating pumps 8, and user tail end air processing devices 9 are mainly arranged on a user side; in the direct connection form, the chilled water secondary pumps 6, the user tail end air processing devices 9, and a bypass pipe 10 of a secondary pump suction inlet with a control valve are mainly arranged in the user side. The invention also provides a connecting form of distributively arranging the secondary pumps to a chilled water distribution system of each user building, and a corresponding operation control method. The system can well realize the hydraulic equilibrium of each paralleled loop circuit of a district cooling system transmission and distribution network, improves the operation efficiency of the secondary pumps, and greatly reduces the water pump energy consumption, thereby improving the energy efficiency ratio of the overall system, and increasing the safety of the overall district cooling system.

Description

technical field [0001] The invention relates to a district cooling and air-conditioning system, in particular to a district cooling and air-conditioning system in which variable-frequency secondary pumps are dispersedly arranged in each user's building to greatly improve the energy saving and safety of the system. Background technique [0002] At present, my country is in a period of industrialization that consumes a large amount of natural resources and raw materials to support rapid economic growth, and the contradiction between supply and demand of energy is becoming increasingly acute. According to the report "China Energy Comprehensive Development Strategy and Policy Research" completed by the Development Research Center of the State Council, my country's current energy efficiency is only 33.4%, which is 10 percentage points lower than the international level. are much higher than international standards. According to research by the Department of Science and Technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/06F24F11/02
Inventor 张建忠陈灿
Owner 南京市建筑设计研究院有限责任公司
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