Solid-liquid phase change heat storage device with built-in movable heat exchanger and using method

A technology for heat storage devices and heat exchangers, which is applied in the types of heat exchangers, indirect heat exchangers, heat storage equipment, etc. It can solve the problem of uneven mixing of phase-separated materials, reduce the heat storage and release performance of materials, and shorten the service life, etc. problems, achieve the effect of reducing supercooling and phase separation, simple structure and prolonging service life

Pending Publication Date: 2020-02-04
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned device mainly has the following problems. The heat exchange pipeline is fixedly installed in the heat storage box. Only by increasing the heat exchange area can the low-temperature difference heat exchange be realized and the heat storage and release efficiency be improved, which increases the heat storage cost and reduces the energy storage density; During the heat absorption and release cycle of solid-liquid phase change heat storage materials, there are phenomena such as supercooling, phase separation and uneven material mixing, which reduce the heat storage and release performance of the material and shorten its service life.

Method used

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  • Solid-liquid phase change heat storage device with built-in movable heat exchanger and using method
  • Solid-liquid phase change heat storage device with built-in movable heat exchanger and using method
  • Solid-liquid phase change heat storage device with built-in movable heat exchanger and using method

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Embodiment 1

[0027] Embodiment one: if Figure 1 ~ Figure 3 As shown, the specific embodiment of the present invention is: a heat storage box 1 composed of an outer shell 11, an insulating material 12 and an inner tank 13, and an inverted V-shaped track 2 is installed on the upper ends of the left and right sides of the heat storage box 1; The device 4 is composed of a second row of pipes 41, a second upper header 43, a second lower header 42 and a heat transfer plate 44; The pipe 43 and the second lower header 42 are welded with an area of ​​0.05m 2 The heat transfer plate 44 is welded on the second row of pipes 41 and its direction is perpendicular to the plane of the collecting and discharging pipes; one end of the second lower header 42 stretches out of the heat storage box 1 as an inlet, and one end is sealed; the second upper header 43 One end extends out of the heat storage box 1 as an outlet, and the other end is closed; the heat absorbing heat exchanger 3 is composed of a first r...

Embodiment 2

[0031] Embodiment 2: Based on the above embodiments, in this embodiment, the first and second motors 61 and 62 are respectively installed at the outlet ends of the heat absorbing heat exchanger 3 and the heat releasing heat exchanger 4, and are connected with the second and fourth rolling bearings. 52,54 mesh.

Embodiment 3

[0032] Embodiment 3: Based on the above embodiments, solid paraffin is placed inside the heat storage box 1, and its latent heat of phase change is 189J / g, and its density is 0.00093g / mm 3 , then the program setting value of heat =10.5KJ.

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PUM

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Abstract

The invention discloses a solid-liquid phase change heat storage device with a built-in movable heat exchanger and a using method, and relates to solid-liquid phase change heat storage. The device comprises a heat storage box body, a heat absorption heat exchanger, a heat release heat exchanger, a motor, a controller, a temperature sensor and an electric heater, wherein rails are arranged at the upper ends of the left side and the right side of the heat storage box body; the heat absorption heat exchanger and the heat release heat exchanger are arranged inside the heat storage box body; rolling bearings are mounted at an inlet and an outlet of the heat absorption heat exchanger and an inlet and an outlet of the heat release heat exchanger respectively, are arranged on the rails, and can move along the rails under the driving of the motor; and the controller, the temperature sensor and the electric heater are combined, so that the heat storage and release process can be automatically completed according to needs. According to the device, on the premise that the heat exchange area is not increased and the heat storage density is not influenced, the heat exchange temperature difference is reduced, the heat storage and release efficiency is improved, the supercooling and phase separation of the phase change heat storage material are effectively reduced, and the service life of theheat storage material is prolonged.

Description

technical field [0001] The invention relates to a solid-liquid phase change heat storage technology, in particular to a solid-liquid phase change heat storage device with a built-in movable heat exchanger. Background technique [0002] Phase change heat storage is an important technology to improve energy utilization efficiency and protect the environment. It is also an effective way to alleviate the mismatch between energy supply and demand in terms of time, intensity and location. Waste heat and recovery of waste heat, energy saving of industrial and civil buildings and air conditioning have broad application prospects, and have become research hotspots worldwide. [0003] At present, solid-liquid phase change heat storage devices are mainly divided into two categories. One type mainly includes a heat storage box and a phase change heat storage unit. The phase change heat storage unit encapsulates the phase change heat storage material in a corresponding container and arr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02F28F27/00
CPCF28D20/021F28F27/00Y02E60/14
Inventor 赵静刘姝君王克振
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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