WO2021072965A1 - 一种长距离分离式热管换热系统 - Google Patents

一种长距离分离式热管换热系统 Download PDF

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WO2021072965A1
WO2021072965A1 PCT/CN2019/126140 CN2019126140W WO2021072965A1 WO 2021072965 A1 WO2021072965 A1 WO 2021072965A1 CN 2019126140 W CN2019126140 W CN 2019126140W WO 2021072965 A1 WO2021072965 A1 WO 2021072965A1
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heat
module
heat exchange
exchange system
sub
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PCT/CN2019/126140
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English (en)
French (fr)
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辛嵩
张兆鹏
江叶伟
郭江慧
张逍
刘尚校
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山东科技大学
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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
    • 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

Definitions

  • the invention relates to a heat exchange system suitable for long-distance separated heat pipes, in particular to a heat exchange system in which a separate heat pipe is composed of modules and units.
  • heat pipe technology is widely used in various engineering practices. Compared with the traditional integral heat pipe, the evaporator and condenser of the separate heat pipe are connected by an ascending pipe and a descending pipe. When the heat absorption and heat release positions are far away, the length of the heat pipe insulation section is elongated, It can realize long-distance heat transfer, and the arrangement of the separated heat pipes is flexible. While the heat exchange fluid is completely separated, heat exchange between one fluid and multiple fluids can be realized. Experts and scholars at home and abroad have mostly concentrated on the heat transfer characteristics, medium flow characteristics and specific engineering applications of separate heat pipes. However, there are few studies on the layout of separate heat pipes during specific work, let alone correct. It is suitable for the study of the arrangement of long-distance separated heat pipes.
  • long-distance separated heat pipes can achieve the purpose of heat exchange.
  • Layout method. Arranging the entire heat exchange system into units not only facilitates the stable heat transfer of the heat pipe heat exchange system, but also facilitates the management and maintenance of each independent heat pipe unit.
  • the heat pipe that first contacts the hot fluid in the heat absorption part is connected to the heat pipe that contacts the cold fluid last in the heat release part to form an independent unit.
  • the working fluid in each unit can fully exchange heat with the external fluid, thereby ensuring that each mutual Independent units have relatively stable and efficient heat transfer efficiency. It is necessary to provide a suitable heat exchange system for long-distance separated heat pipes.
  • the present invention provides a long-distance separated heat pipe heat exchange system.
  • a long-distance separated heat pipe heat exchange system is composed of a plurality of independent unit sub-heat exchange modules arranged in sequence.
  • the heat exchange system is provided with an air flow channel, and the air flow channel is arranged The direction is consistent with the direction of the medium inflow and out of the heat exchange system.
  • each of the unit sub-heat exchange modules is composed of a heat absorption submodule, a heat release submodule, and a steam pipe and a liquid return pipe connecting the two.
  • the heat absorption submodule and the heat release submodule are both Consists of heat pipes.
  • the arrangement sequence of the heat absorption submodules is the same as the flow direction of the fluid flowing into the heat exchange system, and the arrangement sequence of the heat release submodules is opposite to the flow direction of the fluid flowing out of the heat exchange system.
  • all the heat-absorbing sub-modules constitute a heat-absorbing module
  • all the heat-releasing sub-modules constitute a heat-releasing module
  • the setting position of the heat-radiating module is higher than the position where the heat-absorbing module is located.
  • a plurality of the air flow channels are respectively arranged in the heat absorption module and the heat release module, and the air flow channels respectively communicate with adjacent heat absorption sub-modules and heat release sub-modules.
  • a deflector or an induced draft fan is installed in the air flow channel.
  • a liquid return pump is provided on the liquid return pipe between the heat release module and the heat absorption module.
  • Arranging the entire heat exchange system into multiple units not only facilitates the stable heat transfer of the heat pipe heat exchange system, but also facilitates the management and maintenance of each independent heat pipe unit.
  • Air flow channels are arranged in each heat exchange module to make the air volume in each channel basically the same, which is also conducive to sufficient heat exchange between the heat exchange module and the air fluid.
  • Fig. 1 is a plan view of the heat exchange system of the present invention.
  • the heat exchange part can be divided into two modules according to the functional area, which are the heat absorption module 1 and the heat release module 2.
  • the heat absorption module 1 transfers the heat absorbed from the thermal fluid to the heat release module 2.
  • the entire heat exchange system is composed of multiple independent units, and each independent unit is composed of a heat absorption submodule 5, a heat release submodule 6, and a steam pipe 3 and a liquid return pipe 4 connecting the two submodules. Each unit independently completes the heat transfer process.
  • the temperature of the hot fluid when flowing through the heat absorption module 1 is gradually reduced, while the temperature of the cold fluid when flowing through the heat release module 2 is gradually increased, so in order to ensure that each connected heat absorption sub-module 5 and the heat release module
  • the thermal sub-modules 6 have close and stable heat transfer efficiency.
  • the multiple units of the heat-absorbing sub-modules in the heat-absorbing module 1 are arranged in the order of the flow direction of the thermal fluid flowing into the heat exchange system.
  • the arrangement sequence of the unit heat release submodules is set to be opposite to the flow direction of the cold flow fluid out of the heat exchange system.
  • the air flow channel 8 is set, and multiple air flow channels 8 are set in the heat absorption module 1 and the heat exchange module 2 respectively.
  • the air flow channel 8 is equipped with a baffle or an induced draft fan so that the air volume of each channel is basically the same, and the wind speed is uniform and stable .
  • the invention is suitable for the arrangement of long-distance separated heat pipes, is convenient to implement and maintain, and is beneficial to ensuring the stable heat transfer efficiency of the heat pipe heat exchange system.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

本发明涉及一种长距离分离式热管换热系统，将换热系统按功能区划分为吸热模块和放热模块，整个换热系统分成多个相互独立的单元，其中每个独立的单元由吸热子模块、放热子模块及连接它们的蒸汽管和回液管组成，设置两模块中单元子模块的排列顺序，并设置空气流动通道，使各通道内风量基本一致，也有利于换热模块与空气流体之间的充分换热,为确保换热系统的正常高效运行，在回液管上安装回液泵，所述换热系统适用于长距离分离式热管换热的实践应用中去，且布置方式简单易行。

Description

一种长距离分离式热管换热系统 技术领域
本发明涉及一种适用于长距离分离式热管的换热系统，具体是指由模块和单元构成分离式热管的一种换热系统。
背景技术
目前，热管技术被广泛用于各类工程实践中去。相较于传统的整体式热管，分离式热管的蒸发器和冷凝器之间通过上升管和下降管相连，当吸热和放热的位置距离较远时，将热管绝热段的长度拉长，可实现远距离热量输送，而且分离式热管布置灵活，将换热流体完全隔开的同时，可以实现一种流体与多种流体之间的换热。国内外专家和学者对于分离式热管的研究大多集中在对其传热特性、介质流动特性以及具体的工程应用中，而对于分离式热管具体工作时的布置问题研究的较少，更不用说对适用于长距离分离式热管的布置方式的研究。当涉及远距离热量传输时，长距离分离式热管能够达到换热目的，为保障其热管的安全稳定高效运行，不仅需要设计好热管元件结构、充液率和高度差等，还需要合理的热管布置方式。将整个换热系统分单元布置，既有利于热管换热系统的稳定传热，又方便每个相互独立热管单元的管理与维护。同时将吸热部分最先接触热流体的热管与放热部分最后接触冷流体的热管相连，组成一个独立的单元，可以使各单元内的工质与外界流体充分换热，进而保证每个相互独立的单元都有较为稳定且高效的传热效率。为长距离分离式热管提供一种合适的换热系统是很有必要的。
发明概述
技术问题
问题的解决方案
技术解决方案
针对当前远距离热量传输传热效率差等问题，本发明提供一种长距离分离式热管换热系统。
一种长距离分离式热管换热系统，所述换热系统有多个相互独立的单元子换热模块按照顺序排列构成，所述换热系统内设置空气流动通道，所述空气流动通道的设置方向与介质的流入和流出换热系统的方向一致。
进一步地，每个所述单元子换热模块均由吸热子模块、放热子模块以及连接两者之间的蒸汽管和回液管组成，所述吸热子模块和放热子模块均由热管组成。
进一步地，吸热子模块的排列顺序与流体流入换热系统的流动方向相同，放热子模块的排列顺序与流体流出换热系统的流动方向相反。
进一步地，所有的吸热子模块组成吸热模块，所有的放热子模块组成放热模块，所述放热模块的设置位置高于吸热模块所在的位置。
进一步地，多个所述空气流动通道分别设置在吸热模块和放热模块，所述空气流动通道分别连通相邻的吸热子模块和放热子模块。
进一步地，在所述空气流动通道内设置导流板或安装引风机。
进一步地，在所述放热模块和吸热模块之间的回液管上设置回液泵。
发明的有益效果
有益效果
本发明的有益效果：
(1)将整个换热系统分多个单元布置，既有利于热管换热系统的稳定传热，又方便每个相互独立热管单元的管理与维护。
(2)同时将吸热部分最先接触热流体的热管与放热部分最后接触冷流体的热管相连，组成一个独立的单元，可以使各单元内的工质与外界流体充分换热，进而保证每个相互独立的单元都有较为稳定且高效的传热效率。
(3)在每个换热模块内设置空气流动通道，使各通道内风量基本一致，也有利于换热模块与空气流体之间的充分换热。
对附图的简要说明
附图说明
图1本发明换热系统的平面俯视图。
图中：1.吸热模块，2.放热模块，3.蒸汽管，4.回液管，5.吸热子模块，6.放热子模块，7.回液泵，8.空气流动通道。
发明实施例
本发明的实施方式
下面结合具体实例和附图1对本发明进行详细描述，本部分的描述仅是示范性和解释性，不应对本发明的保护范围有任何的限制作用。
在具体实施时，按功能区划分可以将换热部分视为两个模块，为吸热模块1和放热模块2，吸热模块1将从热流体中吸收的热量传递到经过放热模块2的冷流体中。整个换热系统由多个相互独立的单元构成，并且每个独立的单元由吸热子模块5、放热子模块6以及连接两子模块之间的蒸汽管3和回液管4组成，每个单元独立地完成热量的传递过程。热流体在流经吸热模块1时的温度是逐渐降低的，而冷流体在流经放热模块2过程中的温度是逐渐升高的，所以为了保证各相连的吸热子模块5和放热子模块6都有接近且稳定的传热效率，将吸热模块1中的多个单元吸热子模块按热流体流入换热系统的流动方向顺序排列，同时将放热模块2中多个单元放热子模块的排列顺序设置为与冷流流体流出换热系统的流动方向相反。设置好空气流动通道8，在吸热模块1和换热模块2中分别设置多个空气流动通道8，空气流动通道8中设置导流板或安装引风机使得各通道风量基本一致，风速均匀稳定。当换热系统实施布置时，一般情况下放热模块2与吸热模块1会有一定的高度差，此时放热模块2冷凝出的液体工作介质会依靠自身重力沿着回液管4返回到吸热模块1，但若两模块的高度差不够或二者之间的距离过长时，在回液管4中需要安装回液泵7。
本发明适用于长距离分离式热管的布置方式，且便于实施与维护，有利于保证热管换热系统稳定的传热效率。
当然，上述说明并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换，也应属于本发明的保护范围。

Claims (7)

  1. 一种长距离分离式热管换热系统，其特征在于：所述换热系统有多个相互独立的单元子换热模块按照一定顺序排列构成，所述换热系统内设置空气流动通道，所述空气流动通道的设置方向与介质的流入和流出换热系统的方向一致。
  2. 根据权利要求1所述的一种长距离分离式热管换热系统，其特征在于，每个所述单元子换热模块均由吸热子模块、放热子模块以及连接两者之间的蒸汽管和回液管组成，所述吸热子模块和放热子模块均由热管组成。
  3. 根据权利要求2所述的一种长距离分离式热管换热系统，其特征在于，吸热子模块的排列顺序与流体流入换热系统的流动方向相同，放热子模块的排列顺序与流体流出换热系统的流动方向相反。
  4. 根据权利要求2所述的一种长距离分离式热管换热系统，其特征在于，所有的吸热子模块组成吸热模块，所有的放热子模块组成放热模块，所述放热模块的设置位置高于吸热模块所在的位置。
  5. 根据权利要求4所述的一种长距离分离式热管换热系统，其特征在于，多个所述空气流动通道分别设置在吸热模块和放热模块，所述空气流动通道分别连通相邻的吸热子模块和放热子模块。
  6. 根据权利要5所述的一种长距离分离式热管换热系统，其特征在于，在所述空气流动通道内设置导流板或安装引风机。
  7. 根据权利要求4所述的一种长距离分离式热管换热系统，其特征在于，在所述放热模块和吸热模块之间的回液管上设置回液泵。
PCT/CN2019/126140 2019-10-17 2019-12-18 一种长距离分离式热管换热系统 WO2021072965A1 (zh)

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