Large centralized air-conditioning system with distributed cold and heat sources

A technology of centralized air conditioning, cold and heat sources, applied in hot water central heating systems, air conditioning systems, heating systems, etc., to achieve the effects of flexible and convenient operation and adjustment, saving operating costs, and energy-saving operating costs

Pending Publication Date: 2018-11-20
CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a large-scale centralized air-conditioning system with distributed cold and heat sources and a control method, so as to solve the problem faced by the existing large-scale centralized air-conditioning Technical contradictions between demand and energy-saving demand

Method used

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  • Large centralized air-conditioning system with distributed cold and heat sources

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Embodiment 1

[0090] This embodiment provides a large-scale centralized air-conditioning system with distributed cold and heat sources, such as figure 1 As shown, it includes a large-scale energy station 1, and the large-scale energy station 1 is connected to the user unit 3 through the transmission and distribution pipeline network 2, and a plurality of user units 3 are distributed along the transmission and distribution pipeline network 3;

[0091] The transmission and distribution pipeline network 2 is a three-pipe ring transmission and distribution pipeline network, including parallel annular main water supply main pipes 201, annular main return water main pipes 202 and annular second return water main pipes 203, large-scale The water supply end 101 of the energy station 1 is connected to the main water supply main pipe 201, the return water end 102 of the large energy station 1 is connected to the main return water main pipe 202, and the main return water main pipe 202 and the second re...

Embodiment 2

[0110] This embodiment provides a control method for a large-scale centralized air-conditioning system with distributed cold and heat sources, which adopts the large-scale centralized air-conditioning system with distributed cold and heat sources as described in Embodiment 1. This method provides corresponding control methods for summer, winter and transitional seasons according to the environment of the user unit;

[0111] When the environment in which the user unit is located is summer, the summer control method is adopted;

[0112] When the environment in which the user unit is located is winter, adopt the winter control method;

[0113] When the environment of the user unit is the transition season, the transition season control method is adopted;

[0114] In the summer control method described above, the energy islands in the multiple user units can store cold toward the transmission and distribution network first, and then release the cold to the multiple user units thr...

Embodiment 3

[0116]This embodiment provides a control method for a large-scale centralized air-conditioning system with distributed cold and heat sources, which adopts the large-scale centralized air-conditioning system with distributed cold and heat sources as described in Embodiment 1. The method provides corresponding control methods for summer, winter and transitional seasons according to the environment of the user unit; when the environment of the user unit is summer, the summer control method is adopted, and the summer control method is:

[0117] Working condition one, normal working condition:

[0118] The water pump at the water supply end of the large-scale energy station is started, and the water pumps connected in series at the conventional end and the end with a large temperature difference are all turned on;

[0119] Open the valve at the water supply end of the large energy station, open the valve at the return water end of the large energy station, open the valve on the mai...

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Abstract

The invention provides a large centralized air-conditioning system with distributed cold and heat sources. The large centralized air-conditioning system comprises a large energy station, wherein the large energy station is connected with user units through a transmission and distribution pipe network, and a plurality of user units are distributed along the transmission and distribution pipe network; the transmission and distribution pipe network is a three-pipe annular transmission and distribution pipe network and comprises an annular main water supply trunk pipe, an annular main backwater trunk pipe and an annular secondary backwater trunk pipe, and the annular main water supply trunk pipe, the annular main backwater trunk pipe and the annular secondary backwater trunk pipe are parallel;the water supply end of the large energy station is connected with the main water supply trunk pipe, the backwater end of the large energy station is connected with the main backwater trunk pipe, themain backwater trunk pipe communicates with the secondary backwater trunk pipe through a secondary by-pass pipe, and the main water supply trunk pipe communicates with the main backwater trunk pipe through a third by-pass pipe. According to the large centralized air-conditioning system with the distributed cold and heat sources, the centralized large air conditioning system and a decentralized air conditioning system are combined, the advancing or delaying of the cooling and heating in the morning and evening or in winter and summer can be realized, the operation adjustment of the system is more flexible and convenient.

Description

technical field [0001] The invention belongs to the field of air conditioning and refrigeration, and relates to a large-scale centralized air-conditioning system, in particular to a large-scale centralized air-conditioning system with distributed cold and heat sources. Background technique [0002] At present, most of the systems in the air-conditioning field are large-scale centralized air-conditioning systems or decentralized small-scale air-conditioning systems. The centralized large-scale energy station has the disadvantages of inflexible adjustment and large space occupied by the machine room, while the decentralized small-scale air-conditioning system can only use a single energy source for power supply. Cooling and heating cannot achieve multi-energy complementarity. The supply and return water temperature of the air conditioning system is mostly 7°C / 12°C in summer and 50°C / 40°C in winter, which cannot meet the multi-level needs of the terminal to use different grades...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/89F24D3/10F24D19/10
CPCF24D3/1058F24D19/1006F24F5/0007F24F11/89
Inventor 周敏宋晗
Owner CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD
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