Solar heat pipe phase change sausage

Abstract

The utility model discloses a solar heat pipe phase change sausage, and belongs to the field of solar energy utilization. The solar heat pipe phase change sausage is characterized in that the solar heat pipe phase change sausage is mainly composed of a phase change sausage body and two heat pipes, a part of each heat pipe is inserted into the phase change sausage body, a hanging buckle a is arranged at the end of the heat pipe at one end of the phase change sausage body, and a hanging buckle b is arranged at the end of the other heat pipe. According to the solar heat pipe phase-change sausage, the phase-change material can efficiently complete the heat storage and release process within a short time, the problem that the heat resistance is increased and the heat release speed is slow due to shell solidification when the phase-change material releases heat is effectively solved, and the solar energy utilization efficiency in the plateau area is remarkably improved; and a solution which is convenient to mount and dismount, adapts to complex terrains and is flexibly configured is provided, reliable energy guarantee is provided for plateau areas, and remarkable social and economic benefits are shown.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of solar energy utilization, concretely to a solar heat pipe phase change intestine. BACKGROUND

[0002] The severe climate conditions in plateau cold regions, the serious shortage of energy reserves, and the traditional heating mode are facing great challenges. The research and application of new energy is to solve the shortage of traditional energy. Based on the characteristics of "strong solar radiation and large diurnal temperature difference" in plateau regions, using solar energy resources as the energy supply of residential buildings has become the key research direction of energy-saving design of residential buildings in plateau regions.

[0003] However, solar radiation has the characteristics of intermittency and discontinuity. Using light to drive phase change materials to realize solar energy conversion is an effective means to solve the problem of time and space mismatch of sunlight. In the light-thermal energy conversion and storage system, sunlight is first converted into heat energy, and then a large amount of heat is absorbed in the form of latent heat of phase change during the phase change of the phase change material. Phase change energy storage material is a green energy-saving and environment-friendly material, and is the key carrier of phase change energy storage technology. It has the advantages of high energy density, constant working temperature and almost constant volume. Combining solar energy and phase change energy storage for building heating is an important means of building energy saving. Phase change material heat storage can solve the problem of time and space mismatch of solar energy.

[0004] Patent No. CN219713468U discloses a phase change intestine solar heating system, which comprises a light condensing groove, a U-shaped groove and a phase change intestine chain. The phase change intestine chain is connected by a plurality of phase change intestines, installed in the heat dissipation coil and the U-shaped groove, and the light condensing groove is located below the U-shaped groove, forming a complete phase change intestine solar heating system. However, Patent No. CN219713468U still has the problems of slow solar energy absorption rate and slow heat release speed caused by the solidification of the outer shell of the phase change material. Patent No. CN108917446A discloses a heat pipe assisted reinforced heat exchange phase change heat storage capsule and phase change heat storage device. Although this invention enhances the heat storage and release performance and simplifies the structure, it still has the problems of insufficient long-term stability between the heat pipe and the phase change material, low application flexibility of the phase change heat storage device, and inconvenience of replacement. Therefore, there is an urgent need for a solar heat pipe phase change intestine that combines phase change intestines with heat pipes to effectively improve the heat storage and release rate. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a solar heat pipe phase change intestine to solve the problems of insufficient long-term stability between the heat pipe and the phase change material, low application flexibility, inconvenience of replacement, slow solar energy absorption rate, and slow heat release speed caused by the solidification of the outer shell of the phase change material.

[0006] In order to achieve the above object, the idea of the present application is as follows: the phase change material is wrapped by a metal cylinder and a metal cover, and two heat pipes are inserted into both ends of the metal cover, the equivalent thermal conductivity of the heat pipes ranges from 10000 to 100000 W / m·K, which is 20 times of that of pure copper film and 10 times of that of multi-layer graphite film, so that the heat efficiency is significantly improved. The metal fins are connected with the heat pipes by welding, and the heat is quickly transferred by increasing the surface area, promoting the convective heat exchange and reducing the thermal resistance. The hooking connectors are welded at the end of each heat pipe, the heat pipes are inserted into the reserved holes of the metal cover and welded and fixed, the metal cover is connected with the metal cylinder by threads, and the sealing gasket is installed during the connection to seal it. After the assembly is completed, during the day, the phase change intestine is placed outdoors to absorb solar energy, the heat pipes and the metal fins quickly conduct the heat to the phase change material to melt and store latent heat; at night, the phase change intestine is moved into the room, the phase change material is solidified to release latent heat by using the temperature difference, the heat pipes and the metal fins accelerate the heat release, prevent the problem of increasing the solidification thermal resistance of the outer shell and slowly releasing heat when the phase change material releases heat, and supply heat to the room by heat convection and heat radiation, so that the energy-saving and efficient heating purpose is achieved.

[0007] The technical scheme adopted by the present application is: a solar heat pipe phase change intestine, characterized in that: the solar heat pipe phase change intestine is mainly composed of a phase change intestine and two heat pipes; one part of each of the two heat pipes is inserted into the phase change intestine, and a hooking buckle a is arranged at the end of the heat pipe at one end of the phase change intestine, and a hooking buckle b is arranged at the end of the other heat pipe.

[0008] The outer layer of each phase change intestine is a copper metal cylinder and a metal cover, and the phase change material encapsulated by microcapsules is filled in the interior, and the specific phase change material is paraffin with 10% expanded graphite. The branched copper metal fins are uniformly distributed in the heat pipe a section and are welded in one body with the heat pipe, the size of the metal fin after welding is almost the same as the inner diameter of the metal cylinder, the contact thermal resistance after being inserted into the metal cylinder is greatly reduced, and the metal fin also plays a role in fixing the heat pipe, so that the stability of the overall structure is enhanced. The adiabatic section is welded and fixed with the metal cover after the heat pipe is inserted into the reserved hole of the metal cover to a specified position, so that the conduction loss of heat is reduced. The metal cover is connected with the metal cylinder by threads, and the sealing gasket suitable for the working environment is installed in the threaded part to ensure the sealing property to prevent the phase change material from leaking and facilitate the subsequent replacement. The hooking connectors are welded at the end of each heat pipe to facilitate the linkage with other solar heat pipe phase change intestines. Compared with the prior art, the present application has the following beneficial effects:

[0009] The material in the phase change microcapsule is paraffin with 10% expanded graphite, which significantly improves the thermal conductivity of the phase change material, and compared with the traditional phase change material, the composite material can absorb and release heat more quickly, accelerates the heat transfer speed, and improves the overall thermal efficiency of the system. The heat pipe has extremely high thermal conductivity, good isothermality and reversible heat transfer characteristics, so that the phase change material can efficiently complete the heat storage and release process in a short time, effectively solving the problem of slow heat release speed caused by the increase of solidification thermal resistance of the shell when the phase change material releases heat. Multiple solar heat pipe phase change intestines can be flexibly linked through the hanging buckles at both ends, facilitating installation and expansion, simplifying the installation process of the system, and enabling the system to be modularly expanded according to actual needs, suitable for different scale application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0010] The description includes four drawings: Figure 1 It is a structure schematic view of the solar heat pipe phase change intestine of the utility model; Figure 2 It is an A-A cross section schematic view of the solar heat pipe phase change intestine of the utility model; Figure 3 It is a B-B cross section schematic view of the solar heat pipe phase change intestine of the utility model; Figure 4 It is a cross section schematic view of the heat pipe a13 of the solar heat pipe phase change intestine of the utility model. In the figure, 1 is a phase change intestine, 2 is a phase change material, 3 is a metal rib, 4 is a metal cylinder, 5 is a metal cover a, 6 is a metal cover b, 7 is a capillary core, 8 is a heat pipe a section, 9 is an adiabatic section, 10 is a heat pipe b section, 11 is a steam pipeline, 12 is a wall surface, 13 is a heat pipe a, 14 is a heat pipe b, 15 is a hole a, 16 is a hole b, 17 is a hanging buckle a, 18 is a hanging buckle b, and 19 is a sealing gasket.

[0011] The specific implementation is as follows:

[0012] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. The embodiments described below by referring to the drawings are exemplary and are used for explaining the utility model, and cannot be understood as limiting the utility model.

[0013] The embodiments of the utility model will be described according to the overall structure of the utility model.

[0014] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a solar heat pipe phase change intestine is characterized in that the solar heat pipe phase change intestine mainly consists of a phase change intestine 1, a heat pipe a 13 and a heat pipe b 14; the phase change intestine 1 consists of a metal cylinder 4, a metal cover a 5, a metal cover b 6, a phase change material 2, a metal fin 3, the heat pipe a 13 and the heat pipe b 14, the heat pipe a 13 and the heat pipe b 14 each have a part inserted into the phase change intestine 1, the phase change intestine 1 has a hook a 17 arranged at the end of the heat pipe a 13 and a hook b 18 arranged at the end of the heat pipe b 14.

[0015] When assembling the solar heat pipe phase change intestine, first, the metal fin 3 is uniformly arranged along the heat pipe a segment 8 and connected to the heat pipe a 13 by welding; then, the heat insulation segment 9 is welded to the hole a 15 part reserved in the metal cover a 5, and the hook a 17 is welded and connected to the heat pipe b segment 10 end of the heat pipe a 13. After the first part assembly is completed, the second part assembly is connected in the same way. After the two part assemblies are connected, the assembled first part assembly is inserted into the metal cylinder 4 and connected by threads, and a sealing washer 19 is added to seal the threaded part during connection. Then, the melted phase change material 2 is poured into the sealed and assembled part, and the second part assembly is connected by threads, and a sealing washer 19 is added to seal the connection, and finally the phase change intestine 1 is assembled.

[0016] The working principle is that during the day, the phase change intestine 1 is placed outdoors to absorb solar radiation, the heat pipe b segment 10 acts as an evaporation segment to absorb heat and evaporate the liquid in the heat pipe a 13 and the heat pipe b 14 into steam, the steam quickly moves to the cooler heat pipe a segment 8 (condensation segment) through the steam pipeline 11 due to the pressure difference, and condenses into liquid, and the condensed liquid returns to the heat pipe b segment 10 by the capillary action of the capillary core 7 to form a cycle, and the heat transfer is accelerated by the metal fin 3 to quickly raise the temperature inside the phase change intestine 1, and the phase change material quickly changes from solid to liquid to store a large amount of latent heat. At night, there is a temperature difference between the phase change material and the indoor environment, and since the heat pipe has the property of reversible heat transfer direction, the heat pipe a segment 8 acts as an evaporation segment to absorb heat and evaporate the liquid in the heat pipe a 13 and the heat pipe b 14 into steam, which quickly moves to the cooler heat pipe b segment 10 (condensation segment) through the steam pipeline 11, and condenses to form a cycle, and the heat is released through the metal fin 3, and the phase change intestine transfers the stored latent heat to the outside through heat convection and heat radiation, etc., to raise the indoor environment temperature, thereby achieving heating.

[0017] Further measures are to install a bearing assembly in the hook part to increase the flexibility of the link, facilitate installation and expansion.

[0018] Further measures are to add a gasket at the hole opening when the heat pipe is welded and connected to the metal cover to reduce wear and increase service life.

Claims

1. A solar heat pipe phase change intestine, characterized by: The solar heat pipe phase change intestine mainly consists of a phase change intestine (1), a heat pipe a (13) and a heat pipe b (14); the phase change intestine (1) consists of a metal cylinder (4), a metal cover a (5), a metal cover b (6), a phase change material (2), a metal fin (3), the heat pipe a (13) and the heat pipe b (14), the heat pipe a (13) and the heat pipe b (14) each have a part inserted into the phase change intestine (1) internally, one end of the phase change intestine (1) is provided with a hook a (17) at the end of the heat pipe a (13), and the other end is provided with a hook b (18) at the end of the heat pipe b (14).

2. A solar heat pipe phase change tube according to claim 1, wherein: The heat pipe a (13) is welded and fixed with the heat insulation section (9) of the metal cover a (5), and the heat pipe b (14) is welded and fixed with the heat insulation section (9) of the metal cover b (6).

3. The solar heat pipe phase change tube according to claim 1, wherein: The metal cover a (5) and the metal cover b (6) are connected with the metal cylinder (4) through threads, and a sealing washer (19) is added at the connection.

4. The solar heat pipe phase change tube according to claim 1, wherein: The metal fin (3) adopts a branch design, and the metal fin (3) is uniformly welded and connected to the heat pipe a section (8).

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