GEOTHERMAL ENERGY

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Resultados 38 results. LastUpdate Updated on 06/12/2021 [13:28:00] pdf PDF xls XLS

Solicitudes publicadas en los últimos 30 días / Applications published in the last 30 days



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MULTI-FLUID, EARTH BATTERY ENERGY SYSTEMS AND METHODS

Publication No.: US2021372668A1 02/12/2021

Applicant:

L LIVERMORE NAT SECURITY LLC [US]

US_2020173692_A1

Absstract of: US2021372668A1

The present disclosure relates to a system for storing and time shifting at least one of excess electrical power from an electrical power grid, excess electrical power from the power plant itself, or heat from a heat generating source, in the form of pressure and heat, for future use in assisting with a production of electricity. An oxy-combustion furnace is powered by a combustible fuel source, plus excess electricity, during a charge operation to heat a reservoir system containing a quantity of a thermal storage medium. During a discharge operation, a discharge subsystem has a heat exchanger which receives heated CO2 from the reservoir system and uses this to heat a quantity of high-pressure, supercritical CO2 (sCO2) to form very-high-temperature, high-pressure sCO2 at a first output thereof. The very-high-temperature, high-pressure sCO2 is used to drive a Brayton-cycle turbine, which generates electricity at a first output thereof for transmission to a power grid. The Brayton-cycle turbine also outputs a quantity of sCO2 which is reduced in temperature and pressure to a heat recuperator subsystem. The heat recuperator subsystem circulates the sCO2 and re-heats and re-pressurizes the sCO2 before feeding it back to the heat exchanger to be even further reheated, and then output to the Brayton-cycle turbine as a new quantity of very-high-temperature, high-pressure sCO2, to assist in powering the Brayton-cycle turbine.

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Coal-geothermal energy collaborative exploitation method based on water-conducting fractured zone of fault

Publication No.: AU2021215281A1 02/12/2021

Applicant:

UNIV CHINA MINING

WO_2021232905_A1

Absstract of: AU2021215281A1

Abstract The present disclosure provides a coal-geothermal energy collaborative exploitation method based on a water-conducting fractured zone of a fault. A geothermal water gathering area is fully utilized for coal-geothermal energy collaborative exploitation. A heat energy exchange station is established in a roadway or a chamber formed by gob-side entry retaining after mining at a working face, geothermal wells are excavated through a drilling chamber, a geothermal water extraction pipeline is arranged in the geothermal water gathering area, a tail water reinjection pipeline is arranged in a geothermal reservoir, and tail ends of the geothermal water extraction pipeline and the tail water reinjection pipeline are separated by a certain distance. Geothermal water is extracted to the heat energy exchange station through the geothermal water extraction pipeline, and heat energy is extracted and then conveyed to the ground for utilization. After being extracted, the geothermal water is reinjected to the geothermal reservoir through the tail water reinjection pipeline so as to control the stability of a rock stratum and realize sustainable exploitation of geothermal energy. Meanwhile, coal mining can be carried out at the next working face at the same time, and cooperative exploitation of coal and geothermal energy is achieved. The exploitation method of the present disclosure has the advantages that the resource utilization rate is high, the geothermal energy exploitation util

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THERMAL WELL HEAT CARRIER TRANSPORT SYSTEM AND METHOD FOR INSTALLATION OF THE SAME

Publication No.: US2021372238A1 02/12/2021

Applicant:

ROTOTEC AB [SE]

CA_3117654_PA

Absstract of: US2021372238A1

The disclosed invention concerns a method for installing and operating a thermal well (110) heat carrier transport system (100). A first flexible tubular part (120) is provided into and along a thermal well (110), a second flexible tubular part (130) is provided into the first flexible tubular part (120) and a third open ended tubular part (140) is provided into the second flexible tubular part (130). During installation and operation an installation liquid and heat carrier, respectively, is provided into the second flexible tubular part at an overpressure sufficient to press the first flexible tubular part (120) radially against the inner all of the thermal well (110) in all radial directions. The invention also concerns a system.

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DE-WATERING APPARATUS FOR BUILDING

Publication No.: KR20210144037A 30/11/2021

Applicant:

지에스건설주식회사

Absstract of: KR20210144037A

본 발명에 따른 건축물의 영구 배수장치는, 지중에 매립 설치되고 지하수가 집수되는 집수실과, 지하수를 상기 집수실로 유입시킬 수 있도록 집수실과 연결되는 유입구와, 집수실의 지하수를 배출시킬 수 있도록 유입구보다 높게 배치되는 배출구를 갖는 집수조와, 집수실에 집수되는 지하수와 열교환하기 위한 열매체가 유동할 수 있는 열교환관과, 열교환관을 지지하고 집수조에 결합될 수 있는 지지 프레임을 구비하고, 집수조에 집수되는 지하수의 열을 상기 열매체를 통해 집수실의 외부로 운반하기 위해 집수조에 설치되는 열교환관 모듈과, 지하수를 수용할 수 있는 배수실과, 배출구를 통해 집수실에서 배출되는 지하수를 배수실로 유입시킬 수 있도록 배수실과 연결되는 입구를 갖는 배수조와, 배수실에 수용되는 지하수를 펌핑할 수 있도록 배수조에 설치되는 배수 펌프와, 배수 펌프에 의해 펌핑되는 지하수를 배수조의 외부로 배출시킬 수 있도록 배수 펌프와 연결되는 배수관과, 배수실에 수용되는 지하수의 수위를 검출하기 위한 레벨 센서와, 레벨 센서의 검출 신호에 따라 배수 펌프를 제어하는 제어부를 포함한다.

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一种地热能阶梯利用系统

Publication No.: CN113720029A 30/11/2021

Applicant:

西安新港分布式能源有限公司

Absstract of: CN113720029A

本发明公开了一种地热能阶梯利用系统,包括箱体,所述箱体的内腔固定连接有隔板,所述隔板的左侧从上往下依次固定连接有第一横板和第二横板。本发明具备可对地热水热量进行充分利用及具有清洁和过滤功能的优点,解决了现有的地热能阶梯利用系统在使用过程中,无法对地热水中含有的热量和蒸汽进行充分利用,从而造成大量热能浪费,同时不能对地热水内部含有的杂质进行过滤,导致大量杂质进入至机械内部,缩短了各机械设备的使用寿命,且不具有清洁功能,不能对换热管的表面进行清理,造成换热管在长时间使用时表面容易形成水垢,导致影响其换热效果,降低了地热能阶梯利用系统适用性的问题。

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一种地热能余热利用系统

Publication No.: CN113720028A 30/11/2021

Applicant:

西安新港分布式能源有限公司

Absstract of: CN113720028A

本发明公开了一种地热能余热利用系统,包括水箱,所述水箱左侧的底部连通有水泵,所述水泵的出水端连通有第一横管,所述第一横管的左侧套设有加热箱,所述第一横管的左端连通有第一螺旋管,所述第一螺旋管的左端连通有第二横管,所述第二横管的左端贯穿至加热箱的左侧。本发明具备以多种方式对水源进行加热,热量与水源接触面积大,热能利用率高,根据需求对水源进行制冷的优点,解决了现有的地热能余热利用设备供热方式单一,不能够以多种方式对水源进行加热,产生的热量与水源接触不彻底,使得热能损耗率好,降低了热能的利用率,同时不能够根据使用者的需求对水源进行制冷,不便于用作生活用水使用的问题。

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一种油气田站场热能循环利用系统

Publication No.: CN113720184A 30/11/2021

Applicant:

西南石油大学

Absstract of: CN113720184A

本发明涉及油气田站场能源利用技术领域,尤其涉及一种油气田站场热能循环利用系统,包括热能提供端、热能储存端、热能消费端和热能传输系统;热能传输系统包括第一热源交换器和第二热源交换器,第一热源交换器和第二热源交换器均设置有蒸发端和冷凝端;热能提供端包括废弃油气井换热端、天然气压缩机组和压缩机集中换热器,废弃油气井换热端、第一热源交换器蒸发端和压缩机集中换热器形成闭合回路;在热能储存端进行储热工作时,热能储存端与第一热源交换器冷凝端形成闭合回路。本发明可回收利用油气田大量浪费的热能以及地热能,能为油气田节能减排和提高能源高效利用。

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一种利用地下干热源进行供热的装置及方法

Publication No.: CN113701370A 26/11/2021

Applicant:

山东科技大学

Absstract of: CN113701370A

本发明提供了一种利用地下干热源进行供热的装置,包括:冷水补给装置、热水抽吸泵以及供热管道;所述冷水补给装置设置在地面上,用于向所述供热管道内注入冷水;所述热水抽吸泵与所述供热管道连接;所述供热管道包括竖直井传导段和水平井加热段。本发明还提供了一种使用上述利用地下干热源进行供热的装置进行供热的方法,包括以下步骤:S1勘探地下干热源;S2测量干热岩的导热系数;S3钻井;S4确定分支井的数量;S5布置供热装置。本发明在保证注入水质不变的情况下,注、采同井,低温水和热水在同一井循环,充分利用地热资源,对低温水进行加热,满足不同温度热水领域的应用。

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一种地热能分级高效多产能系统及其运行方法

Publication No.: CN113701397A 26/11/2021

Applicant:

三峡大学

Absstract of: CN113701397A

本发明提供了一种地热能分级高效多产能系统及其运行方法,包括高温蒸发器、低温蒸发器、预热器、吸收式制冷装置、换热器、分离器、闪蒸罐、膨胀机和相关的循环泵和加压泵及相应的连接管路。该系统可将地热能分级高效利用,不但可在吸收式制冷装置中满足用户末端对冷量的需求,而且还可以在高压、低压级膨胀机的工作下输出电能满足整个系统运行时各个需能部件的用电量需求,此外,高压级、低压级膨胀机排出的乏汽可以与自来水在换热器中换热以供用户生活热水,也可以与供暖回水热交换后让水达到供暖所需温度,输送到用户末端。本发明实现了地热分级高效利用,并能同时产电能、供热水、供暖和制冷多方面能量,提高了系统的运行效率。

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一种多源地热供暖系统

Publication No.: CN113701230A 26/11/2021

Applicant:

国网浙江省电力有限公司湖州供电公司

Absstract of: CN113701230A

本发明公开了一种多源地热供暖系统,包括若干组地热换热管、地源热泵机组、室内末端供暖装置和控制平台,所述每组地热换热管分别通过电控换向阀与地源热泵机组相连接,所述地源热泵机组还与室内末端供暖装置相连接,所述地热换热管上安装有测温装置,所述测温装置、地源热泵机组、室内末端供暖装置和电控换向阀均与控制平台相连。控制平台根据室内末端供暖装置所需的总能量、转换过程中能源的损耗以及每组地热换热管所能够提供的能量确定地热换热管,并开启确定的地热换热管的电向控制阀进行地热能量的提取,提高了地热利用效率。

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Method of calculating temperature of a geological structure

Publication No.: JP2021532352A 25/11/2021

Applicant:

エクイノール・エナジー・アーエスEQUINORENERGYAS

US_2021255352_A1

Absstract of: GB2575857A

A method of calculating the temperature of a geological structure comprises inverting a magnetic parameter of the geological structure to estimate its temperature. The magnetic parameter may be the total magnetization, comprising the induced and remnant magnetization. The magnetic parameter may be inverted from magnetic potential field data using a map inversion. The inversion for the temperature may be performed using a Bayesian method and a phenomenological model which provides a relationship between the magnetic parameter and the temperature. The phenomenological model uses a spinodal exsolution model and/or the Ising model, or a bi-nodal exsolution model and/or JMAK kinetics. Estimates may also be provided of Curie temperatures, mineral compositions and/or fractions of titanomagnetite phases. The method may be useful in drilling, mining, obtaining petroleum or harnessing geothermal energy.

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COAL-TERRESTRIAL HEAT COLLABORATIVE MINING METHOD BASED ON FAULT WATER CONDUCTING FISSURE ZONE

Publication No.: WO2021232905A1 25/11/2021

Applicant:

UNIV CHINA MINING [CN]

AU_2021215281_A1

Absstract of: WO2021232905A1

A coal-terrestrial heat collaborative mining method based on a fault water conducting fissure zone, which fully utilizes a geothermal water collection zone (1) for coal-terrestrial heat collaborative mining. A heat energy exchange station (10) is built in a roadway and a chamber formed along a goaf after mining on a working surface; a geothermal well is excavated by means of a drilling chamber; a geothermal water extraction pipeline (12) is separately arranged to the geothermal water collection zone; and a tail water reinjection pipeline (11) is arranged to a geothermal reservoir (13), and the tail ends of the tail water reinjection pipeline and the geothermal water extraction pipeline are separated by a certain distance. Geothermal water is extracted to the heat energy exchange station by means of the geothermal water extraction pipeline, and heat energy is extracted and then transported to the ground for use; and after the heat is taken, tail water is reinjected into the geothermal reservoir by means of the tail water reinjection pipeline to control the stability of a rock formation and implement the sustainable mining of the terrestrial heat. Moreover, coal mining can be performed at the same time on the next working surface, implementing the coal-terrestrial heat collaborative mining. The mining method has the advantages of high resource utilization rate, low terrestrial heat mining and utilization costs, and turning the harm of the fault water conducting fissure zone int

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一种中深层高温含水层储能井回灌系统

Publication No.: CN113686035A 23/11/2021

Applicant:

中能建地热有限公司

Absstract of: CN113686035A

一种中深层高温含水层储能井回灌系统。本产品其组成包括:开采井、回灌井,所述的开采井内设置潜水泵,所述的潜水泵连接地热水管路,所述的地热水管路连接热泵机组,所述的热泵机组连接空调侧管路,所述的热泵机组连接排气罐,所述的排气罐连接加压泵,所述的加压泵连接主电动阀,所述的主电动阀连接冲洗管线,所述的冲洗管线插入所述的回灌井内,所述的加压泵连接1号电动阀,所述的1号电动阀连接2号电动阀。本发明用于中深层高温含水层储能井回灌系统。

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一种复合含水层用中低温地热井利用系统

Publication No.: CN113686034A 23/11/2021

Applicant:

中能建地热有限公司

Absstract of: CN113686034A

一种复合含水层用中低温地热井利用系统,包括复合含水层、上隔水层、潜水泵、开采井、地热水管路、板式换热器、地面工艺部、回灌井,所述复合含水层上侧连接上隔水层,所述开采井与回灌井穿过上隔水层插入复合含水层,所述开采井与回灌井相对设置,所述地热水管路中部设置板式换热器、地面工艺部,所述板式换热器设置在靠近开采井侧,所述地热水管路左端设置潜水泵,所述潜水泵插入开采井内,所述地热水管路右端插入回灌井内;所述复合含水层包括下含水层、下隔水层、上含水层,所述上含水层、下隔水层、下含水层在上隔水层下侧依次排列。

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一种地源热能与电能互补互偿节电节能系统

Publication No.: CN113691164A 23/11/2021

Applicant:

安徽环艺机电工程有限公司

Absstract of: CN113691164A

本发明公开了一种地源热能与电能互补互偿节电节能系统,涉及热源地泵技术领域,其包括地源热泵系统,所述地源热泵系统的热气进入端通过第二导管连接有中央空调输入末端,地源热泵系统的冷气排出端通过第一导管连接有中央空调输入末端,所述地源热泵系统的热气排出端连接有分流管,分流管上设置有多个换热机构,多个所述换热机构的输出端均安装有蛇形冷却管,所述地源热泵系统的冷气输入端通过第三导管连接有制冷机构。本发明通过换热过程中的温差发电,从而对热量回收利用,减少了能量损耗,通过将换热过程中收集的电能对液体制冷散热,实现地源热能与电能的之间的互相利用,极大的提高了换热效果及冷却效果。

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基于多能源互补的稠油热采注汽系统

Publication No.: CN113669708A 19/11/2021

Applicant:

中国石油大学(华东)

Absstract of: CN113669708A

本公开提供一种基于多能源互补的稠油热采注汽系统,包括:地热子系统,太阳能子系统,风能子系统和蒸汽生产子系统;其中,地热子系统包括一级热泵和二级热泵,蒸汽生产子系统包括第一蒸汽发生器和蒸汽换热器,地热子系统通过一级热泵与蒸汽生产子系统换热连接,太阳能子系统与第一蒸汽发生器换热连接,风能子系统与蒸汽换热器电连接;地热子系统通过二级热泵与太阳能子系统换热连接;风能子系统还分别与一级热泵和二级热泵电连接;地热子系统,太阳能子系统和风能子系统分别产生能量品质依次增加的地热能源、第一能源和第二能源;蒸汽生产子系统用于综合梯级利用地热能源、第一能源和第二能源分段加热软化水来生产蒸汽。

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用于干热花岗岩地热开发的控震压裂人工热储建造方法

Publication No.: CN113669043A 19/11/2021

Applicant:

中国地质调查局水文地质环境地质调查中心

Absstract of: CN113669043A

本发明公开了一种用于干热花岗岩地热开发的控震压裂人工热储建造方法,包括:干热花岗岩开发有利区开展三维地震勘探,在断层不发育区域开发靶点并钻直井至目的层。直井开展成像测井,选择发育层段作为压裂段,采用组合管柱完井。开展小液量储层压裂测试,通过微地震手段监测岩石破裂事件伴随产生的能量波,矩张量反演获取岩石破裂事件发生的精确位置及“沙滩球”。判断储层深部的压裂段是否存在未探明的大尺寸高倾角的天然结构面,若存在,填石英砂封堵,对处于致密层段的无孔套管射孔。配合压裂材料,通过多液性压裂液开展水力压裂。本发明既可在干热花岗岩储层中水力压裂形成所需规模的裂缝网络,又可极大减小诱发有感地震风险。

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一种适用于储存农副产品的恒温库

Publication No.: CN113670000A 19/11/2021

Applicant:

青岛澳柯玛冷链集成有限公司青岛澳柯玛生物医疗有限公司

Absstract of: CN113670000A

本发明公开了一种适用于储存农副产品的恒温库,包括恒温库、抽水泵以及热力锅炉,恒温库墙体内铺设有储水管,抽水泵设置在恒温库外部的地面上,抽水泵上设置进水口和出水口,进水口通过抽水管与地下水井连接,出水口分为两路,一路经过第一电磁阀与储水管的进水口连接,另一路经过第二电磁阀、热力锅炉与储水管的进水口连接;储水管出水口处设有第三电磁阀。该恒温库与具有制冷系统的冷库相比,成本低,与常规地窖相比,保温效果好,并且可以通过叉车承载,方便装卸,综合建设周期短,针对一些经历不发达地区,制造和使用成本低。

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适用于建筑基础作业的地埋管施工方法

Publication No.: CN113668547A 19/11/2021

Applicant:

北京市华清地热开发集团有限公司

Absstract of: CN113668547A

本发明提供了一种适用于建筑基础作业的地埋管施工方法的实施方式,该地埋管施工方法包括:S10:在土层中开挖建筑基坑;S20:对建筑基坑进行一次基础垫层浇筑并预留地埋管施工区域;S30:在地埋管施工区域内施工安装地埋管;S40:对地埋管施工区域进行二次基础垫层浇筑。与现有技术相比,采用本发明的技术方案,可以在建筑基础作业,保护地源热泵的地埋管,避免在建筑基坑开挖过程中被损坏;此外,一次基础垫层也可以避免因雨季土壤松软造成的地埋管的管沟部分处土壤护坡坍塌,减少对土壤层的扰动等情况。这样一来,就缩减了重新打孔、连管等重复工程量,缩短了施工周期,节省了施工费用。

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一种单井双管式含水层储能系统

Publication No.: CN113668644A 19/11/2021

Applicant:

中能建地热有限公司

Absstract of: CN113668644A

一种单井双管式含水层储能系统,包括换热器、井室、止水段、空调机房、分割连通器、压力平衡井、滤水管、滤料、潜水泵,所述滤水管包括第一滤水管、第二滤水管、第三滤水管、第四滤水管,所述滤料包括第一滤料、第二滤料,所述潜水泵包括第一潜水泵、第二潜水泵,所述井室下侧设置止水段,所述止水段下侧设置第一滤料,所述第一滤料下侧设置止水段,所述下层止水段下侧设置第二滤料,所述井室内部设置换热器,所述井室右侧设置空调机房,所述空调机房通过机组侧管路连接换热器,所述井室下侧设置2个取水井,取水井上端与井室相通。

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一种地热能源采集路面

Publication No.: CN113668320A 19/11/2021

Applicant:

内江师范学院

Absstract of: CN113668320A

本发明公开了一种地热能源采集路面,涉及地热能热利用技术领域,路面包括垫层、第一基层、面层,垫层为水泥碎石层,第一基层为石墨烯复合填料层,面层为沥青混凝土层,第一基层位于所示垫层与面层之间,第一基层内铺设有导热管,导热管由相连通的第一导热管、第二导热管构成,第一导热管位于基层的内部,第一导热管的两端伸出至第一基层的外部并与第二导热管连通,第一导热管与第二导热管的端部通过连接头连接,第二导热管连通地热泵、集热器,第一导热管、第二导热管、地热泵、集热器形成封闭式循环通道。石墨烯复合材料作为基层填料,提高填料热传递、热量存储,提高基层承载能力。利用地源热泵技术调节路面各层温度,提高路面稳定性。

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一种用于川藏地区的地热流体防垢装置及除垢方法

Publication No.: CN113669933A 19/11/2021

Applicant:

核工业二八研究所

Absstract of: CN113669933A

本发明公开了一种用于川藏地区的地热流体防垢装置及防垢方法,装置包括箱体,所述箱体设置有地热进水管和地热出水管;第一水泵,所述第一水泵设置在地热进水管处,用于将地热井中的地热流体泵送至箱体内;换热组件,所述换热组件包括上积水箱、下积水箱和若干换热管,上、下积水箱之间通过所述换热管连接,下积水箱固定设置在箱体底部,上积水箱连接有出水管,下积水箱连接有进水管,所述进水管连接有第二水泵;刮垢组件,所述刮垢组件包括驱动装置和刮板,刮板上设置有若干与换热管位置对应的通孔。另外,本发明还公开了一种防垢方法。本发明在实际的使用中能够解决现有技术中在使用地热资源时出现结垢影响换热率的问题。

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WELL COMPLETION CONVERTING A HYDROCARBON PRODUCTION WELL INTO A GEOTHERMAL WELL

Publication No.: WO2021231533A1 18/11/2021

Applicant:

SAUDI ARABIAN OIL CO [SA]
ARAMCO SERVICES CO [US]

US_2021356174_A1

Absstract of: WO2021231533A1

A well completion to convert a hydrocarbon production well into a geothermal well includes flow tubes to transport a working fluid through the well and a heat exchanger at a downhole location coupled to the flow tubes to exchange heat of the formation at the downhole location with the working fluid. A heat exchange fluid surrounds the heat exchanger at the downhole location to be heated by the formation at the downhole location. The heat exchanger heats the working fluid to a state in which the working fluid rises to the surface. At the surface, a power plant uses the heated working fluid to generate work. The working fluid is then cooled and returned to the downhole location to repeat the work generation cycle.

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VERTICAL GROUND HEAT EXCHANGER FOR REDUCING TEMPERATURE IN CARBONACEOUS SHALE ROCK MASS AND PREVENTING ROADBED FROST HEAVE

Publication No.: US2021355639A1 18/11/2021

Applicant:

UNIV SW SCI & TECH SWUST [CN]

CN_111426085_A

Absstract of: US2021355639A1

A vertical ground heat exchanger for reducing the temperature in the carbonaceous shale rock mass and preventing roadbed frost heave includes a heating mechanism, a heat releasing component respectively connected to both ends of the heating mechanism and a refrigeration heat exchange mechanism. The refrigeration heat exchange mechanism is connected to the lower end of the heating mechanism through a heat transfer pipeline and communicates with the heat releasing component. The heat releasing component includes a double-layer heat exchange tube component, a gas-liquid separator and a branch tube, wherein the double-layer heat exchange tube component is respectively connected to the both ends of the heating mechanism, the gas-liquid separator is connected to the double-layer heat exchange tube component, and the branch tube is connected between the gas-liquid separator and the refrigeration heat exchange mechanism. The double-layer heat exchange tube component includes an upper bellows and a lower bellows.

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UNDERGROUND HEAT EXCHANGER AND GEOTHERMAL HEATING AND COOLING SYSTEM USING THE SAME

Nº publicación: KR20210136683A 17/11/2021

Applicant:

주뉴저스트

Absstract of: KR20210136683A

본 발명은 지중의 열을 교환하는 장치와 이를 이용한 지열 냉난방 시스템에 관한 것으로, 본 발명에 따른 지중 열교환기는 지중에 수직으로 매설되는 복수 개의 직선형 철근(11); 철근으로서, 상기 복수 개의 직선형 철근(11)을 바깥쪽에서 수직으로 감싸 원형을 이루면서 상기 복수 개의 직선형 철근(11)에 결합되는 스트럽(12) 및 연질로 형성되어, 상기 직선형 철근(11)과 스트럽(12)의 결합구조 외부에서 상기 직선형 철근(11)의 길이 방향을 따라 나선형으로 감싸면서 배치되고 양 끝단은 지상으로 노출되는 열교환 파이프(13)로 구성되는 것을 기술적 특징으로 한다.

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