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District cooling system and method adopting distributed variable-frequency triple-stage pumps

A three-stage pump, distributed technology, applied in air-conditioning systems, refrigerators, heating methods, etc., can solve the problems of waste of energy consumption and serious cooling loss of chilled water pump transportation, improve safety and service life, and reduce residual The effect of pressure head and economical improvement

Active Publication Date: 2017-05-31
ARCHITECTURAL DESIGN & RES INST OF SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, a large amount of energy consumed by the chilled water pump is wasted by the throttling adjustment device. At the same time, the cooling loss caused by the heat generated by the water pump is also quite serious.

Method used

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  • District cooling system and method adopting distributed variable-frequency triple-stage pumps
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  • District cooling system and method adopting distributed variable-frequency triple-stage pumps

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0031] Such as figure 1 As shown, the distributed frequency conversion three-stage pump regional cooling system of this embodiment includes a delivery pipe network, user distributed pumps, users, and the cold water produced by the cooling station passes through the delivery pipe network 1 (water supply pipe 11, return water pipe 12) and user branch pipe 2 (water supply pipe 21, return water pipe 22) distribution pump 3 (plan 1 31, plan 2 32) to the user 4.

[0032] As shown in Figure 2, the user distributed pump system consists of two forms: adjacent users are grouped in parallel and then connected to three-stage pumps, diagram 2-1 ; After the user is connected in series with the three-stage pump, each user is connected in parallel, Figure 2-2 .

[0033] The design ...

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Abstract

The invention discloses a district cooling system adopting distributed variable-frequency triple-stage pumps. The system comprises a district cooling station, a cooling delivery pipe network, a user distribution pump and a user heat exchange room; the triple-stage pumps comprise a chilled water primary pump, a chilled water secondary pump and a chilled water tertiary pump; the chilled water primary pump provides circulating power for the district cooling station; the chilled water secondary pump provides power for the cooling delivery pipe network; the chilled water tertiary pump is the user distribution pump; and chilled water prepared by the district cooling station is delivered to the user distribution pump through the cooling delivery pipe network, the user distribution pump pumps the chilled water as required from the cooling delivery pipe network to the user heat exchange room, and the chilled water is subjected to heat exchange through the user heat exchange room and then is delivered back to the cooling delivery pipe network. With the cooling system and method, the energy waste and the cold loss caused by full-flow high-lift secondary pumps in traditional cooling pipe networks can be fully reduced, and the lift of a delivery water pump inside the cooling station can be reduced to the great extent.

Description

technical field [0001] The invention relates to the field of regional energy cooling pipe networks, in particular to a distributed frequency conversion three-stage pump regional cooling system and method. Background technique [0002] At present, with the international energy shortage, scientific and technological progress, and urbanization development and transformation, the district cooling system has been used for nearly 40 years as one of the components of urban or regional energy planning and distributed energy station construction. With the inclusion of distributed energy systems in the "13th Five-Year Plan" outline, its importance to the national energy development strategy is self-evident. [0003] The district cooling system is to meet the air-conditioning cold source requirements of multiple buildings in a specific area. The cold water is prepared centrally by a special cooling station and supplied with chilled water through the regional pipe network. The low-temp...

Claims

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Application Information

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IPC IPC(8): F24F5/00F25B41/00
CPCF24F5/0017F25B41/40Y02E60/14
Inventor 王钊陈卓伦张宇翔刘涛
Owner ARCHITECTURAL DESIGN & RES INST OF SOUTH CHINA UNIV OF TECH
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