CN103542756B - Laminated heat-storage device - Google Patents

Abstract

The invention discloses a laminated heat-storage device comprising a water layer, a heat-storage material layer and a heat conductive media layer which are stacked sequentially from up to down in a circulating manner. Water, heat conductive media and phase-change heat storage material are contacted and exchange heat through a large metal plane, and heat exchanging area is increased. The entire device can be designed to be rectangular, structure is compact, and space is saved.

Description

A layered heat storage

1. Technical field

The invention relates to the field of solar heat utilization, in particular to a laminated heat storage device.

2. Background technology

A solar water heater is a solar energy utilization device that uses solar energy as an energy source to heat water or a heat transfer medium. Existing solar water heater products are divided into integral solar water heaters and split solar water heaters according to installation methods. Integral solar water heaters can only be placed on roofs and roofs, and have certain requirements for the top area of buildings, which cannot meet the needs of high-rise buildings. The split-type solar water heater has a relatively large water tank, and it will take up a relatively large space when installed in a bathroom, balcony or kitchen.

A thermal storage solar water heater has appeared (application number: 201220417779.3), which describes a thermal storage solar water heater, including a vacuum tube device, the vacuum tube device includes a vacuum tube, a water tube is set in a vacuum, and the inner wall of the vacuum tube is connected to the vacuum tube. A heat storage material layer is filled between the water pipes. In this way, the water storage tank can be omitted, and a part of space can be saved. But the heat storage part of this solar water heater is placed outdoors, and its thermal insulation performance is worse than indoors. Simultaneously, the space volume of the vacuum tube interlayer limits the amount of heat storage material, and cannot supply hot water for many people.

In order to better balance the two demands of supplying more hot water and occupying less space, a stacked heat storage can be designed, in which the heat storage part, heat transfer medium and hot water part are designed as closely stacked layer cavities, increasing heat exchange area and reduce volume.

3. Contents of the invention

The present invention proposes a laminated heat storage device, which is composed of a thermal insulation shell, a water inlet, a water pipe, a water outlet, a water layer, a heat storage material layer, a heat conduction medium layer, a medium inlet, a medium pipe, and a medium outlet. The water layer, heat storage material layer, and heat conduction medium layer are separated by metal plates, and the superposition sequence is: from top to bottom, the water layer, heat storage material layer, and heat conduction medium layer circulate sequentially; between adjacent water layers, pass The water pipes are connected, and the inlet and outlet pipes of the same water layer are arranged diagonally; the adjacent heat-conducting medium layers are connected through medium pipes, and the inlet and outlet medium pipes of the same heat-conducting medium layer are arranged diagonally. The medium pipe refers to a pipe used to communicate with adjacent heat-conducting medium layers. For the same heat-conducting medium layer, the medium pipe is divided into a medium-inlet pipe and a medium-outlet pipe. The water pipe refers to a pipe used to communicate with adjacent water layers. For the same water layer, the water pipe is divided into a water inlet pipe and a water outlet pipe. The thermal insulation shell is covered on the outer surface of the laminated heat storage.

Preferably, the whole device can be designed as a flat cuboid, which is placed close to the indoor wall when installed.

Preferably, the separators of the water layer, the heat storage material layer and the heat conduction medium layer are metal plates punched with undulating grooves.

Preferably, the separators of the water layer, the heat storage material layer and the heat conduction medium layer are made of undulating metal plates.

The invention has two advantages: one is that more phase-change heat storage materials can be filled through the design, more heat can be stored, and the space occupied by the device can be reduced; Large plate contact increases the heat transfer area.

4. Description of drawings

Below in conjunction with accompanying drawing, the present invention will be further described.

Figure 1 is a top view of the device.

Fig. 2 is the A-A sectional view of the device.

Fig. 3 is a B-B sectional view of the device.

The parts marked in the figure are: 1. Insulation shell; 2. Water inlet; 3. Water pipe; 4. Water outlet; 5. Water layer; 6. Heat storage material layer; ; 9. Medium pipe; 10. Medium outlet.

5. Specific implementation

Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

The solar heat collector with a stacked heat storage device described above, when the sun is sufficient, the solar heat collector heats the heat conduction medium, enters the heat conduction medium layer 7 from the medium inlet 8, and heats the phase change storage in the heat storage material layer 6. hot material. The heat-conducting medium that dissipates heat and cools returns to the solar collector from the medium outlet. Cold water flows into the water layer 5 from the water inlet 2 at night, absorbs heat from the heat storage material layer 6, and becomes hot water and flows out from the water outlet 4. The phase change heat storage material in the heat storage material layer 6 absorbs heat during the day and undergoes phase change to store heat, and releases heat to heat water at night.

Claims (4)

1. A stacked heat storage device, its structure is composed of: insulation shell (1), water inlet (2), water pipe (3), water outlet (4), water layer (5), heat storage material layer (6 ), a heat conduction medium layer (7), a medium inlet (8), a medium pipe (9), and a medium outlet (10), wherein the water layer (5), the heat storage material layer (6), and the heat conduction medium layer (7) consist of The metal plates are separated, and the stacking sequence is as follows: from top to bottom, the water layer (5), the heat storage material layer (6), and the heat conduction medium layer (7) circulate sequentially; the adjacent water layers (5) pass through The water pipes (3) are connected, and the inlet and outlet pipes of the same water layer (5) are distributed diagonally; the adjacent heat transfer medium layers (7) are connected through the medium pipe (9), and the inlet and outlet medium pipes of the same heat transfer medium layer (7) Diagonal distribution. 2. A laminated heat storage device according to claim 1, characterized in that: the whole device can be designed as a flat cuboid, and it is placed close to the indoor wall when installed. 3. A laminated heat storage device according to claim 1, characterized in that: the separators of the water layer (5), the heat storage material layer (6) and the heat conduction medium layer (7) are punched with undulating grooves metal plate. 4. A laminated heat storage device according to claim 1, characterized in that: the partitions of the water layer (5), the heat storage material layer (6) and the heat conduction medium layer (7) are made of undulating metal plate.