Modular phase change heat storage and release device

Abstract

The utility model relates to a modular phase change heat storage and release device. The multiple modular phase change heat storage and release devices are hung and / or placed indoors. The modular phase-change heat storage and release device comprises a plurality of phase-change material storages which are arranged side by side at certain intervals and a module support used for fixing the phase-change material storages. The phase change material storage comprises a packaging tube, a solid-liquid phase change material and a tube plug; the packaging pipe is vertically arranged and is used for filling a solid-liquid phase change material; the pipe plugs are fixedly connected to the top end and the bottom end of the packaging pipe and used for plugging the packaging pipe. The pipe plug at the top end is provided with a vent hole; the module support comprises a limiting frame, a bearing frame and a harness cord. The bearing frame and the limiting frame are arranged at the bottom end and the upper portion of the packaging pipe correspondingly. And the limiting frame and the bearing frame are hinged together through a harness cord. By utilizing the characteristic of high phase change latent heat of the phase change material, the device is mounted in a greenhouse, surplus solar energy is collected in the daytime, heat is released at low temperature at night to be used for increasing indoor temperature, and good growth of crops is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to facility agricultural engineering technical field especially relates to a module type phase change heat storage device. BACKGROUND

[0002] The sunlight greenhouse is common in northern China and plays an important role in ensuring the balanced supply of domestic vegetables and fruits throughout the year. Its construction area in China is also expanding year by year.

[0003] At present, the sunlight greenhouse in the prior art mainly stores and releases heat through the soil and the walling structure, so that the sunlight greenhouse can realize overwintering production without heating in the northern region. However, due to the weak heat storage capacity, the indoor temperature is low at night in winter, which is difficult to meet the demand for high-quality and high-yield crops. In particular, the flexible heat preservation wall sunlight greenhouse has emerged in recent years, which has significant advantages in land saving and cost saving. However, due to the lack of the wall heat storage and release function of the traditional sunlight greenhouse, there is a large amount of surplus solar energy during the day in the winter production environment, and the low temperature phenomenon is more significant at night.

[0004] Although the active heating mode can improve the temperature environment in winter, it will greatly increase the operating cost of the greenhouse and the environmental pressure. Using clean energy for heating will contribute to energy saving and emission reduction for agricultural development. Solar energy, as an easily accessible clean energy, is very suitable as the energy source for the heating device of the sunlight greenhouse. However, solar energy has the problem of intermittency, and a medium is needed to collect the surplus solar energy during the day and release it for heating the greenhouse at night when the temperature is low. Phase change materials have great development potential in the energy saving field due to their high phase change latent heat, small temperature fluctuation, and easy utilization. Using the principle of phase change heat storage to collect solar energy during the day to achieve greenhouse heating at night is an efficient and energy-saving method.

[0005] Therefore, the utility model designs a module type phase change heat storage device, which collects the surplus heat in the sunlight greenhouse during the day and releases it for heating at night, thereby achieving the purpose of suppressing high temperature during the day and improving the night temperature. The utility model combines solar clean energy with phase change heat storage technology, which can realize efficient utilization of solar energy, significantly improve the temperature environment of the greenhouse at night, and ensure the good growth of crops. At the same time, the system has the characteristics of modularity, easy installation on site, does not occupy indoor production space, and is convenient to maintain in the later period. SUMMARY

[0006] In order to solve the problem of low temperature of sunlight greenhouse at night in winter in northern region and pollution of environment and consumption of energy by traditional heating mode, the utility model aims at providing a module type phase change heat storage device. The device utilizes the high phase change latent heat of phase change material to collect the surplus solar energy in the greenhouse during the day and releases the heat to improve the indoor temperature at night when the temperature is low, thereby ensuring the good growth of crops.

[0007] In order to achieve the above object, the utility model provides the following technical scheme:

[0008] The utility model provides a kind of modular phase change heat storage device, multiple modular phase change heat storage devices are hung (hanging) and / or placed in room;The modular phase change heat storage device includes multiple parallel and interval certain distance phase change material storage and a module support for fixing phase change material storage.

[0009] The phase change material storage includes packaging tube 1, solid-liquid phase change material 2 and pipe plug 3;

[0010] The packaging tube 1 is vertically arranged, for filling solid-liquid phase change material 2.

[0011] The pipe plug 3 is fixed at the top end and bottom end of packaging tube 1, for plugging packaging tube 1;Wherein, the pipe plug 3 of top end is equipped with air hole, for balancing the pressure difference inside and outside packaging tube 1 due to the physical state change of solid-liquid phase change material 2, prevent packaging tube 1 from damage, deformation.

[0012] The module support includes limiting frame 4, bearing frame 5 and wire 6;The bearing frame 5 and limiting frame 4 are respectively arranged at the bottom end and upper portion of packaging tube 1, for carrying and fixing phase change material storage;The limiting frame 4 and bearing frame 5 are hinged together through wire 6.

[0013] The section of packaging tube 1 is circular, square or other style.

[0014] The material of packaging tube 1 is metal, plastic, glass or ceramic etc. that is resistant to aging, impact, not easy to deform and will not be corroded or chemically reacted by solid-liquid phase change material 2.Select different solid-liquid phase change material 2 according to the required phase change temperature and latent heat of phase change, and select appropriate packaging tube 1 simultaneously.

[0015] The pipe plug 3 and packaging tube 1 are connected in the way of bonding or welding, to ensure sealing.

[0016] The air hole is located above or side of pipe plug 3;The wire 6 is outer thread solid rod, can adjust the distance between limiting frame 4 and bearing frame 5 according to the size of packaging tube 1 and installation needs.

[0017] The connecting angle steel 7 is fixed at both ends of limiting frame 4, and lifting hole is arranged on the connecting angle steel 7, for hoisting modular phase change heat storage device in greenhouse through cable.

[0018] The section shape of limiting frame 4 is U-shaped, according to the external size of packaging tube 1, open the hole of corresponding size to facilitate the free taking and placing of packaging tube 1;The section shape of bearing frame 5 is U-shaped, according to the external size of packaging tube 1, open the hole of corresponding size to limit the movement of packaging tube 1.

[0019] The plurality of modular phase change heat storage devices are independently hoisted by steel ropes or are in series hoisted; or are hung on a wall body through a support.

[0020] Compared with the prior art, the phase change heat storage device has the advantages that:

[0021] 1. The energy source of the modular phase change heat storage device is solar energy, and compared with a traditional heating mode, no energy is consumed, and the device is clean and pollution-free.

[0022] 2. The solid-liquid phase change material has high heat storage capacity, is simple and easy to use, has small phase change volume change, is not flammable, is safe and non-toxic, and can be repeatedly used.

[0023] 3. The device does not need manual management, can collect heat in the daytime and release heat at night, and plays a role of inhibiting high temperature in the daytime and improving low temperature at night.

[0024] 4. The modular phase change heat storage device has small volume, is easy to disassemble and assemble, can be flexibly adjusted according to the space layout in a greenhouse, does not damage a building structure, is suitable for old greenhouse reconstruction and improvement of a thermal environment of a flexible wall sunlight greenhouse. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a front view structural schematic view of the modular phase change heat storage device of the utility model;

[0026] Figure 2 is a side view structural schematic view of the modular phase change heat storage device of the utility model;

[0027] Figure 3 is a top view structural schematic view of the modular phase change heat storage device of the utility model;

[0028] Figure 4 is a top view structural schematic view of the limiting frame;

[0029] Figure 5 is a top view structural schematic view of the bearing frame;

[0030] Figure 6 is a series hanging installation schematic view of the modular phase change heat storage device of the utility model;

[0031] Figure 7 is an independent hanging installation schematic view of the modular phase change heat storage device of the utility model.

[0032] The reference signs in the drawings are as follows:

[0033] 1, encapsulation tube

[0034] 2, solid-liquid phase change material

[0035] 3, pipe plug

[0036] 4. Limiting frame

[0037] 5. Load-bearing frame

[0038] 6. Weft

[0039] 7. Connecting angle steel DETAILED DESCRIPTION

[0040] The utility model will be further explained in connection with the drawings and examples.

[0041] As Figure 1 shown, a modular phase change heat storage device comprises a plurality of phase change material storage devices arranged side by side at a certain distance and a module support for fixing the phase change material storage devices.

[0042] The phase change material storage device comprises an encapsulation tube 1, a solid-liquid phase change material 2 and a tube plug 3.

[0043] The encapsulation tube 1 is vertically arranged and used for filling the solid-liquid phase change material 2.

[0044] The cross section of the encapsulation tube 1 can be circular, square or other styles that can load the solid-liquid phase change material 2.

[0045] Preferably, the encapsulation tube 1 is a black PE water supply pipe with a pipe diameter of 50 mm and a length of 1.5 m.

[0046] The material of the encapsulation tube 1 is metal, plastic, glass, ceramic or the like, and it also needs to have the characteristics of not being corroded or having other chemical reactions with the solid-liquid phase change material 2, aging resistance, impact resistance and deformation resistance. Different solid-liquid phase change materials 2 are selected according to the required phase change temperature and phase change latent heat, and the encapsulation tube 1 with different materials is selected according to the chemical properties of the solid-liquid phase change material 2.

[0047] Preferably, the solid-liquid phase change material 2 is wax oil, which will not corrode or have a chemical reaction with the PE pipe.

[0048] The tube plug 3 is fixed to the top end and the bottom end of the encapsulation tube 1 and used for plugging the encapsulation tube 1; preferably, the tube plug 3 is adhered to the encapsulation tube 1 by using high-temperature hot melt adhesive; wherein the tube plug 3 at the top end is provided with a vent hole, and the vent hole is located above or beside the tube plug 3.

[0049] When the solid-liquid phase change material 2 in the encapsulation tube 1 changes its physical state and changes its volume due to heat absorption or heat release, air is exhausted or air is taken in through the vent hole, so as to balance the pressure difference between the inside and outside of the encapsulation tube 1 caused by the change of the physical state of the solid-liquid phase change material 2 and prevent the encapsulation tube 1 from being damaged or deformed.

[0050] As Figure 1 andFigure 2 As shown in the drawings, the module support includes a limiting frame 4, a bearing frame 5 and a through wire 6; the bearing frame 5 and the limiting frame 4 are respectively arranged at the bottom end and the upper part of the packaging tube 1, and are used for bearing and fixing the phase change material storage; the limiting frame 4 and the bearing frame 5 are hinged together through the through wire 6, and the through wire 6 is an outer thread solid rod member, and the spacing between the limiting frame 4 and the bearing frame 5 can be adjusted according to the size of the packaging tube 1 and the installation requirement.

[0051] As shown in the drawings, Figure 3 As shown in the drawings, the two ends of the limiting frame 4 are fixedly connected with a connecting angle steel 7, and the connecting angle steel 7 is provided with a hoisting hole, which is used for hoisting the module type phase change heat storage device in the greenhouse through a steel cable.

[0052] As shown in the drawings, Figure 4 As shown in the drawings, the cross section shape of the limiting frame 4 is U-shaped, and according to the outer size of the packaging tube 1, a hole of a corresponding size is opened to facilitate the free taking and placing of the packaging tube 1. Preferably, the diameter of the hole of the limiting frame 4 is 60mm.

[0053] As shown in the drawings, Figure 5 As shown in the drawings, the cross section shape of the bearing frame 5 is U-shaped, and according to the outer size of the packaging tube 1, a hole of a corresponding size is opened to limit the movement of the packaging tube 1. Preferably, the diameter of the groove of the bearing frame 5 is 50mm.

[0054] According to the actual situation and requirement of the installation position, the number of phase change material storage in each module type phase change heat storage device and the total number of installed modules can be determined. The steel cable is passed through the hoisting hole of the connecting angle steel 7 to hoist the module support to a suitable position, and then the phase change material storage is placed into the module support. The module type phase change heat storage device can also be placed in the inside of the north wall of the greenhouse through the support, so as to increase the area of receiving solar radiation.

[0055] Preferably, as shown in the drawings, Figure 6 and Figure 7 A plurality of module type phase change heat storage devices are independently hoisted or hoisted in series through the steel cable.

[0056] The module type phase change heat storage device can fully utilize the high latent heat characteristics of the phase change material under the premise of not affecting the original space structure and production operation of the greenhouse, collect the excess heat in the greenhouse during the day, suppress high temperature, release heat at night, improve the minimum indoor temperature, and fully improve the solar energy utilization rate. The module type phase change heat storage device is clean and pollution-free. Therefore, the module type phase change heat storage device is a device capable of effectively reducing the temperature fluctuation of the sunlight greenhouse, has a long service life, is clean and environmentally friendly, has strong heat storage capacity, is suitable for transforming old greenhouses and improving the heat environment of flexible wall greenhouses, and has good application prospect.

Claims

1. A modular phase change heat storage and release device, characterized in that, The modular phase change heat storage device is hung and / or placed in a room, and comprises a plurality of phase change material storage devices arranged side by side at a certain distance and a module support for fixing the phase change material storage devices. The phase change material storage device comprises an encapsulation tube (1), a solid-liquid phase change material (2) and a tube plug (3). The encapsulation tube (1) is vertically arranged and used for filling the solid-liquid phase change material (2). The tube plug (3) is fixed at the top end and the bottom end of the encapsulation tube (1) and used for plugging the encapsulation tube (1); the tube plug (3) at the top end is provided with a vent hole for balancing the pressure difference between the inside and outside of the encapsulation tube (1) caused by the change of the physical state of the solid-liquid phase change material (2) and preventing the encapsulation tube (1) from being damaged or deformed. The module support comprises a limiting frame (4), a bearing frame (5) and a wire (6); the bearing frame (5) and the limiting frame (4) are arranged at the bottom end and the upper part of the encapsulation tube (1) respectively and used for bearing and fixing the phase change material storage devices; and the limiting frame (4) and the bearing frame (5) are hinged together through the wire (6).

2. The modular phase change thermal storage device of claim 1, wherein, The cross section of the encapsulation tube (1) is circular or square.

3. The modular phase change thermal storage device of claim 1, wherein, The material of the encapsulation tube (1) is metal, plastic, glass or ceramic which is resistant to aging, impact, deformation, corrosion and chemical reaction of the solid-liquid phase change material (2); different solid-liquid phase change materials (2) and corresponding encapsulation tubes (1) are selected according to the required phase change temperature and latent heat.

4. The modular phase change thermal storage device of claim 3, wherein, The encapsulation tube (1) is a PE water supply pipe; and the solid-liquid phase change material (2) is wax oil.

5. The modular phase change thermal storage device of claim 1, wherein, The tube plug (3) and the encapsulation tube (1) are connected by adhesion or welding to ensure sealing.

6. The modular phase change thermal storage device of claim 1, wherein, The vent hole is located above or beside the tube plug (3); and the wire (6) is an external thread solid rod which can adjust the distance between the limiting frame (4) and the bearing frame (5) according to the size of the encapsulation tube (1) and the installation requirement.

7. The modular phase change thermal storage device of claim 1, wherein, The connecting angle steel (7) is fixed at both ends of the limiting frame (4) and provided with a lifting hole for lifting the modular phase change heat storage device in the greenhouse by a steel cable.

8. The modular phase change thermal storage device of claim 1, wherein, The cross section of the limiting frame (4) is U-shaped, and the hole of a corresponding size is opened according to the outer size of the encapsulation tube (1) to facilitate the free taking and placing of the encapsulation tube (1); and the cross section of the bearing frame (5) is U-shaped, and the hole of a corresponding size is opened according to the outer size of the encapsulation tube (1) to limit the movement of the encapsulation tube (1).

9. The modular phase change thermal storage device of claim 1, wherein, The plurality of modular phase change heat storage devices are independently lifted or connected in series by a steel cable or hung on a wall by a support.

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