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Phase-change energy storing device

A technology of phase change energy storage and energy storage components, applied in the field of energy storage devices, can solve the problems of large output energy consumption, difficult to close the water system, complex system, etc., and achieve improved energy storage effect, uniform water flow and temperature stratification , the effect of high system efficiency

Inactive Publication Date: 2018-07-27
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ice storage has the following disadvantages: 1. The system is complex and huge; 2. It occupies a large area; 3. Difficult to control; 4. Short life; 5. Low efficiency; 6. Difficult to maintain and requires high quality operators; 7. Economical Poor benefit
[0006] However, water energy storage has the following disadvantages: 1. Low energy storage density; 2. The water storage tank occupies a large area and has a large volume; 3. The energy storage loss is large, as high as 10%-15%; 4. If it is an open pool, Very susceptible to pollution; 5. Pipeline corrosion is serious; 6. It is not easy to be used in closed water systems, and the output energy consumption is large

Method used

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Experimental program
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Effect test

Embodiment 1

[0037] A phase change energy storage device, such as figure 1 shown, including:

[0038] Cylinder 14, in this embodiment, cylinder 14 can be cylindrical, certainly cylinder 14 also can be as image 3 shown as a square;

[0039] Also includes:

[0040] The upper grid 4 and the lower grid 5 are arranged in the cylinder 14 to limit the movement of the energy storage element 6, and there are channels for water to pass through;

[0041] The energy storage element 6 is filled in the cylinder 14, between the upper grid 4 and the lower grid 5;

[0042] The upper distributor 2 arranged above the upper grid 4 in the cylinder 14 and the lower distributor 3 located below the lower grid 5 in the cylinder 14 are used to spray water evenly, wherein the upper distributor 2 is upward Spraying water can achieve uniform spraying, avoiding the problem of excessive spraying in a single place, and the lower uniform distributor 3 sprays water downwards, so that each energy storage element 3 is h...

Embodiment 2

[0067] This embodiment is substantially the same as Embodiment 1, only the same points will not be described here, and only the differences will be described.

[0068] The significant difference of this embodiment compared with embodiment 1 is that the position of the inspection hole is set in this implementation, such as figure 2 As shown, in this embodiment, the upper inspection hole 9 and the lower inspection hole 10 are both arranged between the upper grid 4 and the lower grid 5 of the cylinder 14 . In this way, the upper manhole 9 doubles as an access hole for the phase change element 6 . The upper inspection hole 9 can enter and reach the upper grid 4 for maintenance, and the energy storage element 6 can be filled inside through the hole; A lower manhole 10 is accessible and reaches the lower grid 5, from which the energy storage element 6 can be removed.

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Abstract

The invention relates to a phase-change energy storing device which comprises a barrel and further comprises an upper grating, a lower grating, an energy storing element filled in the barrel and between the upper grating and the lower grating, an upper distribution uniformizer arranged above the upper grating in the barrel, a lower distribution uniformizer arranged below the lower grating in the barrel, a first circulating water connection port connected with the upper and a second circulating water connection port connected with the lower. The upper grid and the lower grid are arranged in thebarrel and used for limiting movement of the energy storing element, a passage for water to pass is arranged on each of the upper grid and the lower grid, the upper and the lower are used for uniformly spraying water, and the first circulating water connection port and the second circulating water connection port are used for incoming and outgoing of water. Compared with the prior art, the phase-change energy storing device has the advantages that the two circulating water connection ports are provided to feed water, proper phase-change materials can be selected according to heat storage or cold storage, and running temperature of an air conditioner mainframe during cold storage is higher than ice cold storage temperature, so that system efficiency is high; energy storage capacity is higher than that of water energy storing by 5 times, so that energy storing effect is improved.

Description

technical field [0001] The invention relates to an energy storage device, in particular to a phase change energy storage device. Background technique [0002] Energy storage devices are widely used. Most of the existing energy storage devices use ice storage and water energy storage. [0003] For example, Chinese patent CN203163138U discloses an ice-storage central air-conditioner for heating and cooling of hot water, including a main engine and an indoor air-conditioning air supply system composed of a compressor, a water-making system, an ice-making system and a control system. And a fresh air heat exchanger for replacing indoor air is set in the working area of ​​the main engine, the hot water system includes a hot water bucket, and a condenser is arranged in the bucket; the refrigeration system includes an ice-making and ice-storage energy storage bucket, and an ice-making evaporator is set in the bucket and a number of ice bottles soaked in antifreeze; the air-conditio...

Claims

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Application Information

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IPC IPC(8): F24F5/00F28D20/02
CPCF24F5/0021F28D20/021Y02E60/14
Inventor 仇中柱乐平姚远
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER