CN108225067A - A kind of heat pipe of dual temperature phase-change accumulation energy - Google Patents
A kind of heat pipe of dual temperature phase-change accumulation energy Download PDFInfo
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- CN108225067A CN108225067A CN201711269910.XA CN201711269910A CN108225067A CN 108225067 A CN108225067 A CN 108225067A CN 201711269910 A CN201711269910 A CN 201711269910A CN 108225067 A CN108225067 A CN 108225067A
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- 230000009977 dual effect Effects 0.000 title description 2
- 238000009825 accumulation Methods 0.000 title 1
- 239000012782 phase change material Substances 0.000 claims abstract description 59
- 230000005484 gravity Effects 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 46
- 238000005338 heat storage Methods 0.000 claims abstract description 46
- 239000002918 waste heat Substances 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052802 copper Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims abstract description 22
- 238000001704 evaporation Methods 0.000 claims abstract description 12
- 230000008020 evaporation Effects 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/025—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes having non-capillary condensate return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
本发明披露一种双温相变储能的热管包括壳体、蓄热腔室、放热腔室、重力热管、高温相变材料腔室、低温相变材料腔室。所述蓄热腔室为铜管环绕布置于高温相变材料腔室外部。所述放热腔室为环形铜管环绕布置于低温相变材料腔室外部。至少一组所述重力热管置于所述蓄热腔室、放热腔室内。所述重力热管置于蓄热腔室和放热腔室部分为直管段加弯头组成。所述壳体和外壁之间设有保温层。所述重力热管置于蓄热腔室部分为蒸发段，所述重力热管置于放热腔室部分为冷凝段。通过将重力热管技术应用于蓄热器中，利用重力热管内部工作工质的蒸发与冷凝实现热量的吸收、储存与释放，将废热中的能量有效地储存并转移到需要热量的冷流体中。
The invention discloses a heat pipe for dual-temperature phase-change energy storage, which includes a casing, a heat storage chamber, a heat release chamber, a gravity heat pipe, a high-temperature phase-change material chamber, and a low-temperature phase-change material chamber. The heat storage chamber is surrounded by copper pipes and arranged outside the high temperature phase change material chamber. The exothermic chamber is an annular copper pipe and is arranged outside the low-temperature phase-change material chamber. At least one set of gravity heat pipes is placed in the heat storage chamber and the heat release chamber. The part of the gravity heat pipe placed in the heat storage chamber and the heat release chamber is composed of a straight pipe section and an elbow. An insulating layer is provided between the shell and the outer wall. The part where the gravity heat pipe is placed in the heat storage chamber is the evaporation section, and the part where the gravity heat pipe is placed in the heat release chamber is the condensation section. By applying the gravity heat pipe technology to the heat accumulator, the evaporation and condensation of the working fluid inside the gravity heat pipe are used to realize the absorption, storage and release of heat, and the energy in the waste heat is effectively stored and transferred to the cold fluid that requires heat.
Description
技术领域technical field
本发明涉及热能储存与释放技术领域，具体涉及一种双温相变储能的热管及其蓄放热方法。The invention relates to the technical field of thermal energy storage and release, in particular to a heat pipe for dual-temperature phase-change energy storage and a heat storage and release method thereof.
背景技术Background technique
我国的能源利用率仅为33%，相比发达国家要低10%，其中余热资源约占其燃料消耗总量的17% ～67%，由此可知余热利用率提升空间大，节能潜力巨大。my country's energy utilization rate is only 33%, which is 10% lower than that of developed countries, and waste heat resources account for about 17% to 67% of its total fuel consumption. It can be seen that the waste heat utilization rate has a large room for improvement and the potential for energy saving is huge.
余热的回收利用途径很多，按照余热资源化的品质梯级来进行利用效率最高，一般适用于高温余热资源，中低温余热资源可以用于制热及生产生活热水。经过多年的研究，高温段余热资源回收利用技术已取得较大的成果，然而中低温段余热资源的回收利用技术还处于成长阶段，有较大的发展空间。但是工业余热资源存在间歇性、不稳定性、能源密度低等特点，导致以上技术同样存在间歇期，无法连续运行，因此余热回收相变储能技术得以发展。There are many ways to recycle waste heat, and the utilization efficiency is the highest according to the quality level of waste heat resource utilization. It is generally applicable to high-temperature waste heat resources, and medium-low temperature waste heat resources can be used for heating and domestic hot water production. After years of research, great achievements have been made in the recovery and utilization of waste heat resources in the high temperature section. However, the recovery and utilization technology of waste heat resources in the medium and low temperature sections is still in the growth stage and has a large room for development. However, industrial waste heat resources have the characteristics of intermittency, instability, and low energy density. As a result, the above technologies also have intermittent periods and cannot operate continuously. Therefore, waste heat recovery phase change energy storage technology has been developed.
热管是一种高效相变传热元件，在相同温差下流体以汽化潜热的方式传递热量要比对流过程中以显热的方式传递的热量大几个数量级。The heat pipe is a high-efficiency phase change heat transfer element. Under the same temperature difference, the fluid transfers heat in the form of latent heat of vaporization, which is several orders of magnitude larger than the heat transferred in the form of sensible heat in the convection process.
申请号201480054443.7申请了基于脉动热管的热交换装置，其发明的技术目标是改善热交换装置的热性能而不是废热利用，整个装置没有考虑利用相变材料储存热量。Application No. 201480054443.7 applied for a heat exchange device based on pulsating heat pipes. The technical goal of the invention is to improve the thermal performance of the heat exchange device rather than waste heat utilization. The entire device does not consider the use of phase change materials to store heat.
申请号201510463032.X申请了一种热管换热器及其加工方法，其目的是提供一种脉动热管换热器及其加工方法。Application number 201510463032.X applied for a heat pipe heat exchanger and its processing method, the purpose of which is to provide a pulsating heat pipe heat exchanger and its processing method.
申请号201620562228 .4申请了一种气液热管换热器，其目的是用于余热回收，但没有蓄热环节。Application number 201620562228.4 applied for a gas-liquid heat pipe heat exchanger, which is used for waste heat recovery, but without heat storage link.
发明内容Contents of the invention
本发明就中低温段余热资源回收利用问题，设计并制作了一种一种双温相变储能的热管，将相变储能技术及热管技术相结合，利用相变储能技术解决余热资源稳定性差的问题，同时利用热管高效的传热性能优化相变材料导热系数小的缺点。The present invention designs and manufactures a dual-temperature phase change energy storage heat pipe for the recovery and utilization of waste heat resources in the middle and low temperature section, combines phase change energy storage technology and heat pipe technology, and utilizes phase change energy storage technology to solve waste heat resources The problem of poor stability, while using the efficient heat transfer performance of the heat pipe to optimize the shortcoming of the small thermal conductivity of the phase change material.
本发明采用的技术方案具体为：The technical scheme adopted in the present invention is specifically:
一种双温相变储能的热管包括壳体、蓄热腔室、放热腔室、重力热管、高温相变材料腔室、低温相变材料腔室。所述蓄热腔室、放热腔室、重力热管、高温相变材料腔室、低温相变材料腔室设于所述壳体内。所述蓄热腔室为铜管环绕布置于高温相变材料腔室外部。所述放热腔室为环形铜管环绕布置于低温相变材料腔室外部。至少一组所述重力热管置于所述蓄热腔室、放热腔室内。所述重力热管置于蓄热腔室和放热腔室部分为直管段加弯头组成。所述壳体和外壁之间设有保温层。所述重力热管置于蓄热腔室部分为蒸发段，所述重力热管置于放热腔室部分为冷凝段。通过将重力热管技术应用于蓄热器中，利用重力热管内部工作工质的蒸发与冷凝实现热量的吸收、储存与释放，将废热中的能量有效地储存并转移到需要热量的冷流体中。A heat pipe for dual-temperature phase-change energy storage includes a casing, a heat storage chamber, a heat release chamber, a gravity heat pipe, a high-temperature phase-change material chamber, and a low-temperature phase-change material chamber. The heat storage chamber, the heat release chamber, the gravity heat pipe, the high temperature phase change material chamber and the low temperature phase change material chamber are arranged in the housing. The heat storage chamber is surrounded by copper pipes and arranged outside the high temperature phase change material chamber. The exothermic chamber is an annular copper pipe and is arranged outside the low-temperature phase-change material chamber. At least one set of the gravity heat pipes is placed in the heat storage chamber and the heat release chamber. The gravity heat pipe placed in the heat storage chamber and the heat release chamber is composed of a straight pipe section and an elbow. An insulating layer is provided between the shell and the outer wall. The part where the gravity heat pipe is placed in the heat storage chamber is the evaporation section, and the part where the gravity heat pipe is placed in the heat release chamber is the condensation section. By applying the gravity heat pipe technology to the heat accumulator, the evaporation and condensation of the working fluid inside the gravity heat pipe are used to realize the absorption, storage and release of heat, and the energy in the waste heat is effectively stored and transferred to the cold fluid that requires heat.
放热腔室、低温相变材料腔室和重力热管的冷凝段构成所述双温相变储能的热管的放热部分，所述放热腔室内流入冷流体，冷流体在冷却腔室内沿铜管绕行，延长与重力热管的冷凝段接触时间达到充分换热目的。所述冷却腔室的一端设有冷流体进口和冷流体出口。The exothermic chamber, the low-temperature phase-change material chamber and the condensation section of the gravity heat pipe constitute the exothermic part of the heat pipe of the dual-temperature phase-change energy storage. The cold fluid flows into the exothermic chamber, and the cold fluid flows along the cooling chamber. The copper tube is bypassed to prolong the contact time with the condensation section of the gravity heat pipe to achieve the purpose of sufficient heat exchange. One end of the cooling chamber is provided with a cold fluid inlet and a cold fluid outlet.
蓄热腔室、高温箱变材料腔室和重力热管的蒸发段构成所述双温相变储能的热管的蓄热部分，所述蓄热腔室内流入热流体，热流体在蓄热腔室内沿铜管绕行，延长与重力热管的蒸发段接触时间达到充分换热目的。所述蓄热腔室的一端设有热流体进口和热流体出口。The heat storage chamber, the high-temperature box-changing material chamber and the evaporation section of the gravity heat pipe constitute the heat storage part of the heat pipe for dual-temperature phase-change energy storage. The thermal fluid flows into the heat storage chamber, and the heat fluid flows into the heat storage chamber. Detour along the copper tube, prolong the contact time with the evaporation section of the gravity heat pipe to achieve the purpose of sufficient heat exchange. One end of the heat storage chamber is provided with a thermal fluid inlet and a thermal fluid outlet.
所述重力热管包括铜管和工作工质，所述工作工质充注于所述铜管内；所述铜管由竖向通道和横向弯头连接蓄热腔室、放热腔室形成回路，所述竖向通道的个数为5个。The gravity heat pipe includes a copper tube and a working fluid, and the working fluid is filled in the copper tube; the copper tube is connected with a heat storage chamber and a heat release chamber by a vertical channel and a transverse elbow to form a loop , the number of the vertical channels is 5.
所述脉动热管之毛细管的材料为紫铜或者不锈钢，内径为25mm。The material of the capillary of the pulsating heat pipe is copper or stainless steel, and the inner diameter is 25mm.
所述高温相变材料腔室至于所述蓄热腔室内部，其中填充高温相变材料；低温相变材料腔室至于所述放热腔室内部，其中填充低温相变材料。The high-temperature phase-change material chamber is located inside the heat storage chamber and filled with high-temperature phase-change material; the low-temperature phase-change material chamber is located inside the exothermic chamber and filled with low-temperature phase-change material.
本发明进一步提供一种双温相变储能的热管的蓄放热方法，包括以下步骤：The present invention further provides a heat storage and discharge method of a heat pipe with dual temperature phase change energy storage, comprising the following steps:
一、热量吸收：余热热流体流经所述蓄热腔室内，所述重力热管蒸发段工质吸收热量气化，然后在所述重力热管冷凝段内冷凝释放该热量至所述放热腔室内。所述重力热管内部工质不断气化上升、液化下降，形成循环；1. Heat absorption: the waste heat fluid flows through the heat storage chamber, the working fluid in the evaporation section of the gravity heat pipe absorbs heat and vaporizes, and then condenses in the condensation section of the gravity heat pipe to release the heat into the heat release chamber . The internal working medium of the gravity heat pipe continuously gasifies and rises, and liquefies and falls, forming a cycle;
二、热量储存：热流体经过所述蓄热腔室内，通过环形铜管将热量存储于所述高温相变材料腔室内，高温相变材料吸收热量进行相变储能。高温相变材料储能结束后，余热热流体通过所述重力热管将热量传递至所述放热腔室内部，所述低温相变材料腔室内低温相变材料吸收热量进行相变储能。2. Heat storage: hot fluid passes through the heat storage chamber, and stores heat in the high-temperature phase-change material chamber through the annular copper tube, and the high-temperature phase-change material absorbs heat for phase-change energy storage. After the energy storage of the high-temperature phase-change material is completed, the waste heat fluid transfers heat to the inside of the exothermic chamber through the gravity heat pipe, and the low-temperature phase-change material in the low-temperature phase-change material chamber absorbs heat for phase-change energy storage.
三、热量释放：冷流体经过所述放热腔室，通过环形铜管与所述重力热管冷凝段进行换热，进行蓄热回收利用；余热热量不足或间断时，冷流体与所述低温相变材料腔室进行换热，释放储存在所述低温相变材料腔室内热量；所述低温相变材料腔室内热量释放完毕后，所述高温相变材料腔室内热量通过所述重力热管进行热量传递，保证热量持续供应，实现无间断热量释放。3. Heat release: the cold fluid passes through the exothermic chamber, exchanges heat with the condensing section of the gravity heat pipe through the annular copper tube, and performs heat storage and recycling; when the waste heat is insufficient or intermittent, the cold fluid and the low-temperature phase The heat exchange in the chamber of the low-temperature phase-change material releases the heat stored in the chamber of the low-temperature phase-change material; after the heat in the chamber of the low-temperature phase-change material is released, the heat in the chamber of the high-temperature phase-change material passes through the gravity heat pipe Transfer to ensure continuous heat supply and realize uninterrupted heat release.
所述冷流体温度低于所述低温相变材料的相变温度，所述低温相变材料的相变温度低于所述重力热管工质的相变温度，所述重力热管工质的相变温度低于所述高温相变材料的相变温度，所述高温相变材料的相变温度低于所述余热热流体温度。The temperature of the cold fluid is lower than the phase change temperature of the low temperature phase change material, the phase change temperature of the low temperature phase change material is lower than the phase change temperature of the gravity heat pipe working fluid, and the phase change temperature of the gravity heat pipe working fluid is The temperature is lower than the phase transition temperature of the high temperature phase change material, and the phase transition temperature of the high temperature phase change material is lower than the temperature of the waste heat thermal fluid.
本发明产生的有益效果是：本发明的重力热管蓄放热装置将重力热管技术应用于蓄放热装置中，利用重力热管内部工作工质的蒸发上升、冷凝下降和高低温相变材料腔室内不同相变材料的相变潜热，将热流体中吸收的热量分别储存于高低相变材料中，实现了热量的吸收与储存；然后将储存于相变材料中的热量释放于冷流体中，实现了热量的分级储存与利用，有效地将废热中的能量储存保证其不间断热量供应。该重力热管蓄放热装置不仅结构简单，且利用两种高低温相变材料结合的方法，其蓄热能力大，释放热量时候温度稳定，另外在蓄热、放热过程中利用了重力热管，重力热管的运行不需要输入外界做功，又具有热能流密度大、效率高以及运行稳定可靠的明显优点。The beneficial effects produced by the present invention are: the gravity heat pipe heat storage and release device of the present invention applies the gravity heat pipe technology to the heat storage and release device, and utilizes the evaporation rise and condensation drop of the working fluid inside the gravity heat pipe and the high and low temperature phase change material chamber The latent heat of phase change of different phase change materials stores the heat absorbed in the hot fluid in the high and low phase change materials respectively, realizing the absorption and storage of heat; then releases the heat stored in the phase change materials in the cold fluid to realize It ensures the hierarchical storage and utilization of heat, and effectively stores the energy in waste heat to ensure its uninterrupted heat supply. The gravity heat pipe heat storage and release device not only has a simple structure, but also uses the method of combining two high and low temperature phase change materials, which has a large heat storage capacity and stable temperature when releasing heat. In addition, the gravity heat pipe is used in the process of heat storage and heat release. The operation of the gravity heat pipe does not need to input external work, and has the obvious advantages of high heat energy flux density, high efficiency, and stable and reliable operation.
附图说明Description of drawings
图 1 为本发明双温相变储能的热管的结构示意图；Figure 1 is a schematic structural diagram of a heat pipe for dual-temperature phase-change energy storage of the present invention;
图 2 为本发明双温相变储能的热管的蓄放热原理图。Fig. 2 is a schematic diagram of the heat storage and discharge principle of the heat pipe for dual-temperature phase-change energy storage of the present invention.
具体实施方式Detailed ways
下面结合附图及实施例对本发明的技术方案作进一步详细的说明。The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
当结合附图考虑时，能够更完整更好地理解本发明。此处所说明的附图用来提供对本发明的进一步理解，实施例及其说明用于解释本发明，并不构成对本发明的不当限定。The present invention may be more fully and better understood when considered in conjunction with the accompanying drawings. The drawings described here are used to provide a further understanding of the present invention, and the embodiments and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention.
图 1 为本发明一种双温相变储能的热管的结构示意图；图1各部件标记：蓄热腔室1，重力热管2，放热腔室3，余热热流体环形铜管4，高温相变材料腔室5，冷流体环形铜管6，低温相变材料腔室7。Fig. 1 is a schematic structural diagram of a heat pipe for dual-temperature phase-change energy storage according to the present invention; the components in Fig. 1 are labeled: heat storage chamber 1, gravity heat pipe 2, heat release chamber 3, waste heat heat fluid annular copper pipe 4, high temperature Phase change material chamber 5, cold fluid annular copper pipe 6, low temperature phase change material chamber 7.
如图1所示，一种双温相变储能的热管主要包括蓄热腔室1、重力热管2、放热腔室3、余热热流体环形铜管4、高温相变材料腔室5、冷流体环形铜管6、低温相变材料腔室7。其中，5组2重力热管连接在蓄热腔室1与放热腔室3之间，重力热管2内部填充传热工质。高温相变材料腔室5内填充高温相变材料，低温相变材料腔室7内填充低温相变材料。余热热流体环形铜管4中流动余热热流体，冷流体环形铜管6中流动冷流体。蓄热腔室1为重力热管2蒸发段，放热腔室3为重力热管2冷凝段。As shown in Figure 1, a heat pipe for dual-temperature phase-change energy storage mainly includes a heat storage chamber 1, a gravity heat pipe 2, a heat release chamber 3, an annular copper pipe for waste heat heat fluid 4, a high-temperature phase-change material chamber 5, Cold fluid annular copper pipe 6, low temperature phase change material chamber 7. Among them, 5 groups of 2 gravity heat pipes are connected between the heat storage chamber 1 and the heat release chamber 3, and the inside of the gravity heat pipe 2 is filled with heat transfer working medium. The high temperature phase change material chamber 5 is filled with high temperature phase change material, and the low temperature phase change material chamber 7 is filled with low temperature phase change material. The waste heat hot fluid flows in the annular copper pipe 4 , and the cold fluid flows in the cold fluid annular copper pipe 6 . The heat storage chamber 1 is the evaporation section of the gravity heat pipe 2, and the heat release chamber 3 is the condensation section of the gravity heat pipe 2.
其蓄放热原理如图2所示。当余热热流体经过余热热流体环形铜管4时，工质在重力热管2中不断受热气化上升、冷凝下降形成循环进行传热。高温相变材料腔室5内高温相变材料开始相变蓄热。高温相变材料腔室5蓄热完成后，热量由重力热管2传递至放热腔室3，低温相变材料腔室7内低温相变材料开始相变蓄热。The principle of heat storage and release is shown in Figure 2. When the waste heat heat fluid passes through the waste heat heat fluid annular copper pipe 4, the working medium is continuously heated in the gravity heat pipe 2, gasifies, rises, condenses and falls to form a cycle for heat transfer. The high-temperature phase-change material in the high-temperature phase-change material chamber 5 begins to phase-change and store heat. After the heat storage in the high-temperature phase-change material chamber 5 is completed, the heat is transferred from the gravity heat pipe 2 to the exothermic chamber 3, and the low-temperature phase-change material in the low-temperature phase-change material chamber 7 begins to phase-change and store heat.
冷流体通过冷流体环形铜管6与放热腔室3进行换热，吸收热量；当余热热流体环形铜管4内热量不足时，低温相变材料腔室7提供所储存热量与冷流体换热；当低温相变材料腔室7热量提供完毕后，高温相变材料腔室5内存储热量开始供应，通过重力热管2触底热量至放热腔室3，与冷流体换热，完成无间断热量供应。The cold fluid exchanges heat with the heat release chamber 3 through the cold fluid annular copper tube 6 to absorb heat; when the heat in the waste heat hot fluid annular copper tube 4 is insufficient, the low-temperature phase change material chamber 7 provides the stored heat for exchanging with the cold fluid. heat; when the low-temperature phase-change material chamber 7 is provided with heat, the heat stored in the high-temperature phase-change material chamber 5 starts to be supplied, and the heat is transferred to the exothermic chamber 3 through the gravity heat pipe 2 to exchange heat with the cold fluid to complete the heatless process. Intermittent heat supply.
如上所述，对本发明的实施例进行了详细地说明，显然，只要实质上没有脱离本发明的发明点及效果、对本领域的技术人员来说是显而易见的变形，也均包含在本发明的保护范围之内。As mentioned above, the embodiments of the present invention have been described in detail. Obviously, as long as they do not substantially deviate from the inventive points and effects of the present invention and are obvious to those skilled in the art, they are also included in the protection of the present invention. within range.
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| CN111947219A (en) * | 2020-08-14 | 2020-11-17 | 浙江大学 | A compact cascade heat storage heating system and method based on natural circulation heat exchange |
| CN111947220A (en) * | 2020-08-14 | 2020-11-17 | 浙江大学 | Closed gravity heat pipe-based compact type step heat storage and supply system and method |
| CN116336845A (en) * | 2023-04-25 | 2023-06-27 | 山东大学 | Flower-type pulsating heat pipe phase-change heat storage heat exchanger |
| CN117848136A (en) * | 2023-05-08 | 2024-04-09 | 山东大学 | Auxiliary heating phase change heat storage device |
| CN118442864A (en) * | 2024-07-08 | 2024-08-06 | 中交第一公路勘察设计研究院有限公司 | Multi-cavity multiphase heating slow-release cold guide device and heat transfer calculation method thereof |
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| CN118442864A (en) * | 2024-07-08 | 2024-08-06 | 中交第一公路勘察设计研究院有限公司 | Multi-cavity multiphase heating slow-release cold guide device and heat transfer calculation method thereof |
| CN118442864B (en) * | 2024-07-08 | 2024-12-03 | 中交第一公路勘察设计研究院有限公司 | Multi-cavity multiphase heating slow-release cold guide device and heat transfer calculation method thereof |
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