Water cold storage system based on phase change energy storage cold storage tank

A technology of phase change energy storage and cold storage tanks, which is applied in air conditioning systems, household heating, space heating and ventilation details, etc. It can solve the problems of large thickness of the thermoclinic layer, reduce the thickness, improve the overall efficiency, and reduce the temperature. high efficiency effect

Active Publication Date: 2020-10-16
NANJING DARSY ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, how to overcome the problem of large thickness of the thermocline due to the disturbance of water flow in the prior art is a technical problem that needs to be solved urgently in the prior art

Method used

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  • Water cold storage system based on phase change energy storage cold storage tank
  • Water cold storage system based on phase change energy storage cold storage tank
  • Water cold storage system based on phase change energy storage cold storage tank

Examples

Experimental program
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Effect test

Embodiment 1

[0048] In the engineering application of the water cold storage system in the prior art, in order to avoid the mixed disturbance of the returning hot water and the chilled water, a separate storage tank for the returning hot water is usually required, so that the cost input of the water cold storage project is greatly increased, and the use of The integrated water cold storage system of natural stratification method, although the engineering investment cost is reduced, the thickness of the thermoclinic layer produced by natural stratification must reach 50-100mm, which greatly reduces the cooling efficiency of the water cold storage system.

[0049] In order to reduce the thickness of the thermocline layer, a moving phase change layer is used in the prior art for heat exchange to reduce water flow disturbance. However, phase change energy storage materials can be mainly divided into solid-liquid phase transition and solid-solid phase transition according to the phase transition...

Embodiment 2

[0056] A water cold storage system based on a phase-change energy storage cold storage tank in this embodiment has basically the same structure as in Embodiment 1. Further, the automatic control system 500 of this embodiment is connected to the water outlet 131, and the connected pipeline A flowmeter 510 is provided, and the other end of the automatic control system 500 is connected to the mobile phase-change energy storage unit 300. The automatic control system 500 is equipped with a chip, and the temperature, flow and operating status of the entire system are monitored in real time by writing a program to control The switch of each valve and the position of the phase change energy storage unit 300 . Specifically, in this embodiment, the automatic control system 500 can control the movement of the mobile phase-change energy storage unit 300 according to the signal transmitted by the flow meter 510 .

[0057] In this embodiment, the cold storage tank 100 is a cylindrical struc...

Embodiment 3

[0065] A water cold storage system based on a phase change energy storage cold storage tank in this embodiment has basically the same structure as in Embodiment 1. Further, in order to optimize the water distribution effect, the upper water distributor 200 and / or the lower water distribution device in this embodiment The water tank 400 includes a permeable plate and several splitter plates arranged on the permeable plate. The splitter plates are radially distributed along the center of the permeable plate toward the inner wall of the tank body 120, and the ends of the several splitter plates are formed for clamping. Connect back to the slot of the water outlet 111 and / or the water outlet 131, and the splitter plate in this embodiment can be welded on the permeable plate.

[0066] to combine Figure 4 to Figure 6 Specifically, in this embodiment, the upper water distributor 200 includes a first permeable plate 210 and several first splitter plates 212 arranged on the first perm...

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Abstract

The invention discloses a water cold storage system based on a phase change energy storage cold storage tank, and belongs to the technical field of water cold storage engineering. The water cold storage system comprises the cold storage tank, and a cold storage unit and a cold discharge unit which respectively communicate with the cold storage tank, wherein a water return opening is formed in a top cover of the cold storage tank, a water outlet is formed in a bottom cover, a movable phase change energy storage unit is arranged between an upper water distributor and a lower water distributor, the movable phase change energy storage unit is in sliding connection with the inner side wall of a tank body, the movable phase change energy storage unit comprises a reverse osmosis membrane and a movable frame for fixing the reverse osmosis membrane, a composite phase change layer is arranged in the reverse osmosis membrane, and the movable phase change energy storage unit is connected with an automatic control system. According to the water cold storage system based on the phase change energy storage cold storage tank, the defect that the thickness of a thermocline is large due to water flow disturbance in the prior art is overcome, in the provided cold storage system, frozen water and backflow hot water can be separated through the movable phase change energy storage unit, the composite phase change layer absorbs heat and melts and cools the backflow hot water, weak disturbance between the frozen water and the backflow hot water is ensured, and a small thermocline is formed.

Description

technical field [0001] The invention belongs to the technical field of water cold storage engineering, and more specifically relates to a water cold storage system based on a phase change energy storage cold storage tank. Background technique [0002] When a sudden power supply situation occurs in engineering applications such as data center cooling and heat dissipation, the water storage system is often used as a backup cold source. In the prior art, usually the cold water storage system (CWS) needs to consider the design of the water tank to separate the cold water and the return hot water, and try to avoid the mixing of the two, otherwise the cold storage capacity will be lost. In order to achieve this purpose, there are diaphragm method, natural stratification method, multi-slot method, maze method, etc. to choose from. The core requirement is to reduce the thickness of the thermocline layer at the contact surface of cold and hot water, and reduce the heat flow disturba...

Claims

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Application Information

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IPC IPC(8): F24F5/00F24F11/89F24F13/00
CPCF24F5/0021F24F13/00F24F2005/0032F24F11/89Y02E60/14
Inventor 陈振乾张田田许波
Owner NANJING DARSY ENERGY TECH CO LTD
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