WO2015069201A1 - Tube de collecteur de chaleur - Google Patents

Tube de collecteur de chaleur Download PDF

Info

Publication number
WO2015069201A1
WO2015069201A1 PCT/TR2014/000244 TR2014000244W WO2015069201A1 WO 2015069201 A1 WO2015069201 A1 WO 2015069201A1 TR 2014000244 W TR2014000244 W TR 2014000244W WO 2015069201 A1 WO2015069201 A1 WO 2015069201A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
fluid
heat collector
spacer
passed
Prior art date
Application number
PCT/TR2014/000244
Other languages
English (en)
Inventor
Rahmi Oguz Capan
Original Assignee
Hse Hitit Solar Enerji Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hse Hitit Solar Enerji Anonim Sirketi filed Critical Hse Hitit Solar Enerji Anonim Sirketi
Publication of WO2015069201A1 publication Critical patent/WO2015069201A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/20—Solar heat collectors using working fluids having circuits for two or more working fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • 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
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • 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
    • F28D2020/006—Heat storage systems not otherwise provided for
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems
    • 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
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to heat collector tubes used in solar thermal energy systems and to solar energy systems in which heat collector tubes are used.
  • Solar energy systems In solar thermal energy systems, rays from the sun are sent to a heat collector tube by reflector surfaces so that a fluid passed through the heat collector tube is heated up.
  • Solar energy systems are basically divided into two groups according to the type of the fluid passed through the heat collector tube.
  • a fluid with high heat retention capacity and temperature resistance is passed through the heat collector tube.
  • the fluid heated up is outlet from the solar energy system, it heats the water (or a similar fluid) so as to produce steam having a high temperature and pressure.
  • the steam is used to run a steam turbine, for instance, to generate electrical energy.
  • the temperature of the fluid passed through the heat collector tube has to be kept at the highest temperature possible. Therefore, the heat collector tube is coated using special materials in order to absorb the sunrays received from the reflectors in an efficient manner.
  • the temperature of the fluid passed through the heat collector tube can be increased up to 550-600°C by virtue of said coatings.
  • the costs are high of applying the coating process according to the present coating technology to tubes with a thickness above 5 mm. Therefore, the thickness of heat collector tubes is kept below certain limits.
  • the wall thickness of heat collector tubes used particularly in the direct steam generation method is low, the pressure of the fluid should be below a certain level. This also causes the steam obtained from the solar energy system to have a low pressure. Since the steam outlet from a single heat collector tube is not adequate to operate a steam turbine, it is not feasible to obtain high efficiency from this type of solar energy systems.
  • a heat collector tube is suitable for use in a direct steam generation-type solar thermal energy system, and heats a fluid which is passed through the heat collector tube by the sunrays reflected thereon by means of at least one reflector.
  • the heat collector tube comprises at least one inner tube of high heat conductivity, through which the fluid by which steam is generated is passed, and at least one spacer tube which surrounds the inner tube leaving a gap there between, on which sunrays fall, through which the gap made with the inner tube at least one other fluid is passed, and which heats the fluid passed between itself and the inner tube by means of the sunrays falling thereon.
  • a solar thermal energy system in which the heat collector tube is used comprises at least one solar panel by which the rays from the sun are sent onto the heat collector tube; at least one fluid tank in which the fluid to be heated by means of sunrays is contained; at least one circulation line by which the fluid in the fluid tank is sent to the spacer tube and the fluid received from the spacer tube is sent to the fluid tank; at least one pump by which the fluid is moved in the circulation line; at least one temperature control valve measuring the temperature of the fluid transferred from the spacer tube to the fluid tank and controls the temperature of the fluid by limiting the flow-rate of the fluid flowing through the circulation line according to the measured temperature; at least one heating line by which the fluid received from the fluid tank is transferred to the inner tube; and at least one other pump by which the fluid is moved in the heating line.
  • the object of the present invention is to develop a heat collector tube suitable for use in solar thermal energy systems in which direct steam generation is performed. Another object of the present invention is to develop a heat collector tube enabling a fluid passed through the heat collector tube to reach high temperature levels.
  • a further object of the present invention is to develop a heat collector tube enabling a fluid passed through the heat collector tube to reach high pressure levels.
  • Figure 1 is a cross-sectional side view of a heat collector tube according to the present invention.
  • Figure 2 is a cross-sectional perspective view of the heat collector tube according to the present invention.
  • Figure 3 is a cross-sectional perspective view of a coupling detail of the heat collector tube according to the present invention.
  • FIG. 4 is a block diagram of a solar energy system in which the heat collector tube is used.
  • sunrays are sent to a heat collector tube by means of reflectors.
  • a fluid passed through the heat collector tube is heated up.
  • the heat collector tubes comprise a coating absorbing the sunrays.
  • the cost of applying a coating to tubes with a thickness above 5 mm is high.
  • the thickness of the heat collector tube is low, particularly in the direct steam generation-type solar energy systems in which water (or a similar fluid to be steamed) is passed through the heat collector tube, it is not feasible to produce steam at a high pressure. For this reason, a heat collector tube for obtaining steam of a high pressure and temperature and a solar thermal energy system comprising said heat collector tube are developed according to the present invention.
  • the heat collector tube (T) developed according to the present invention comprises at least one inner tube (1) of high heat conductivity, through which a fluid by which steam is generated is passed, and at least one spacer tube (2) which surrounds the inner tube (1) leaving a gap therebetween, on which sunrays fall, through which the gap to the inner tube (1) at least one other fluid is passed, and which heats the fluid passed between itself and the inner tube (1) by means of the sunrays falling thereon.
  • the pressure of the fluid passed through said inner tube (1) is preferably higher than 200 bars (specifically 250 bar). Additionally, the pressure of the fluid while it passes through the gap between the inner tube (1) and the spacer tube (2) is preferably lower than 50 bars (preferably 20 bar).
  • the fluid passing through the gap between the inner tube (1) and the spacer tube (2) is heated by means of the sunrays falling on the spacer tube (2).
  • the fluid passing through the inner tube (1) is heated by means of the inner tube (1) with the increasing temperature of the fluid passing through the gap between the inner tube (1) and the spacer tube (2).
  • the wall thickness of the inner tube (1) may be selected at any desired value.
  • the fluid can be passed through the inner tube (1) at any desired pressure (e.g. above 200 bars) by selecting a higher wall thickness for the inner tube (1).
  • the heat collector tube (T) comprises at least one outer tube (3) which is disposed out of the spacer tube (2) so as to cover the spacer tube (2) and has a vacuum gap (3a) between the spacer tube (2) and itself.
  • said outer tube (3) is preferably made of glass (or from another material having high sunray transmission).
  • sunrays are transmitted onto the spacer tube (2) without energy loss.
  • the outer tube (3) preferably comprises at least one expansion bellows (4) on at least one end thereof by which it is connected to another outer tube (3) and/or to a fixed floor.
  • the spacer tube (2) comprises at least one thermal coating to provide a better absorption of the sunrays.
  • the amount of energy obtained from the sunrays is increased. Since the sunrays are absorbed by the spacer tube (2) according to this embodiment, there is no need to provide a similar coating on the inner tube (9).
  • the use of a coating on the heat collector is not a preference, but an obligation.
  • the heat collector tube (T) comprises at least one other expansion bellows (4a) having at least one end connected to the spacer tube (2) and at least another end connected to a spacer tube outlet (6) which is immovable (it may be fixed to a floor or to a unit).
  • the side of the spacer tube (2) connected to the expansion bellows (4a) can displace so as to come closer to and move away from the tube outlet in a safe manner.
  • the heat collector tube (T) preferably comprises at least one connection element (B) which connects the spacer tube (2) and the expansion bellows (4a) so that the spacer tube (2) can rotate on the longitudinal axis with respect to the expansion bellows (4a).
  • connection element (B) which connects the spacer tube (2) and the expansion bellows (4a) so that the spacer tube (2) can rotate on the longitudinal axis with respect to the expansion bellows (4a).
  • the temperature of the fluid passed through the gap between the inner tube (1) and the spacer tube (2) can be kept at a desired temperature range by means of said temperature control valve (7).
  • the fluid passed through the gap between the inner tube (1) and the spacer tube (2), and the fluid which is heated by the former fluid and passed through the inner tube (1) are prevented from reaching unfavorable temperatures (e.g. high temperatures which can damage the system to which the fluid outlet from the inner tube is transferred).
  • the solar thermal energy system (S) comprises at least one pressure control valve (8) controlling the pressure of the fluid circulated in the circulation line (12).
  • the solar thermal energy system (S) comprises at least another pressure control valve (8) controlling the pressure of the fluid passed through the heating line (13).
  • the solar thermal energy system (S) comprises at least one heat storage unit (10) disposed at the circulation line (12) (preferably between the spacer tube (2) and the fluid tank (11)).
  • Said heat storage unit (10) stores the energy of the fluid circulated in the circulation line (12) at times when sunrays fall on the solar energy system (S) (e.g. during daytime). At times when no sunrays fall on the solar thermal energy system (S), in turn, the fluid circulated in the circulation line (12) can be heated by means of the energy stored in the heat storage unit (10). Thus, the fluid passed through the inner tube (1) can be heated in an uninterrupted manner.
  • either a single fluid tank either a single fluid tank
  • (11) can be used to supply fluid to the circulation line (12) and the heating line (13), or an individual fluid tank (11) for each line (12, 13). In an embodiment involving individual fluid tanks (11), different fluids can be supplied to the circulation line (12) and the heating line (13).
  • the solar energy system (S) comprises at least another pump (9) for transferring fluid from at least one fluid source to the fluid tank (11).
  • the solar energy system (S) comprises at least another pump (9) for transferring fluid from at least one fluid source to the fluid tank (11).
  • water with a pressure of 20 bars and of 250 bars is circulated in the circulation line (12) and in the heating line (13), respectively.
  • the heating line (13) can be heated up to 560-580°C the inner tube (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Un tube de collecteur de chaleur selon la présente invention est approprié pour être utilisé dans un système d'énergie solaire du type à génération de vapeur directe, et chauffe un fluide qui passe à travers ce dernier par les rayons du soleil réfléchis sur ce dernier au moyen d'au moins un réflecteur. Le tube de collecteur de chaleur (T) comprend au moins un tube intérieur (1) ayant une conductivité de chaleur élevée, à travers lequel passe le fluide au moyen duquel est générée la vapeur, et au moins un tube d'espacement (2) qui entoure le tube intérieur (1) en laissant un espace entre eux, sur lequel tombent les rayons du soleil, au moins un autre fluide passant à travers l'espace formé par le tube intérieur (1), et qui chauffe le fluide passé entre le tube de collecteur de chaleur et le tube intérieur (1) au moyen des rayons du soleil tombants sur ce dernier.
PCT/TR2014/000244 2013-11-11 2014-07-08 Tube de collecteur de chaleur WO2015069201A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2013/13038 2013-11-11
TR201313038 2013-11-11

Publications (1)

Publication Number Publication Date
WO2015069201A1 true WO2015069201A1 (fr) 2015-05-14

Family

ID=52144809

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2014/000244 WO2015069201A1 (fr) 2013-11-11 2014-07-08 Tube de collecteur de chaleur

Country Status (1)

Country Link
WO (1) WO2015069201A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703749A (en) * 1982-09-30 1987-11-03 Morse Roger N Solar apparatus
WO2011101485A1 (fr) * 2010-02-22 2011-08-25 Siemens Aktiengesellschaft Tube capteur de chaleur solaire pour génération directe de vapeur, réflecteur cylindro-parabolique muni du tube capteur de chaleur solaire et utilisation du réflecteur cylindro-parabolique
US20120186577A1 (en) * 2009-08-21 2012-07-26 Richard Pelan solar collector
WO2013045721A1 (fr) 2011-09-28 2013-04-04 Universidad Politécnica de Madrid Centrale solaire thermique pour la génération directe de vapeur
CN103162445A (zh) * 2011-12-09 2013-06-19 成都首能新能源开发有限公司 一种中高温太阳能真空集热管
WO2013139971A1 (fr) * 2012-03-23 2013-09-26 Hse Hitit Solar Enerji Anonim Sirketi Système de tendeur
CN203258906U (zh) * 2013-04-11 2013-10-30 蚌埠市智峰科技有限公司 一种太阳能热水器集热管结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703749A (en) * 1982-09-30 1987-11-03 Morse Roger N Solar apparatus
US20120186577A1 (en) * 2009-08-21 2012-07-26 Richard Pelan solar collector
WO2011101485A1 (fr) * 2010-02-22 2011-08-25 Siemens Aktiengesellschaft Tube capteur de chaleur solaire pour génération directe de vapeur, réflecteur cylindro-parabolique muni du tube capteur de chaleur solaire et utilisation du réflecteur cylindro-parabolique
WO2013045721A1 (fr) 2011-09-28 2013-04-04 Universidad Politécnica de Madrid Centrale solaire thermique pour la génération directe de vapeur
CN103162445A (zh) * 2011-12-09 2013-06-19 成都首能新能源开发有限公司 一种中高温太阳能真空集热管
WO2013139971A1 (fr) * 2012-03-23 2013-09-26 Hse Hitit Solar Enerji Anonim Sirketi Système de tendeur
CN203258906U (zh) * 2013-04-11 2013-10-30 蚌埠市智峰科技有限公司 一种太阳能热水器集热管结构

Similar Documents

Publication Publication Date Title
AU2009312347B2 (en) Solar thermal power plant and dual-purpose pipe for use therewith
US8607567B2 (en) Solar steam generator
CN101122425A (zh) 一种碳化硅泡沫陶瓷太阳能空气吸热器
US20130139807A1 (en) Thermal energy generation system
CN105222368A (zh) 基于熔盐传热蓄热的太阳能梯级加热高温集热系统
WO2014148259A1 (fr) Système de collecte de chaleur solaire
CN105698146A (zh) 太阳能蒸汽炉
MX2020009398A (es) Reduccion de condensacion en calentadores de agua.
JP6651007B2 (ja) 高効率平板型太陽熱吸熱システム及びその運転方法
US20150082792A1 (en) Solar and renewable/waste energy powered turbine with two stage heating and graphite body heat exchanger
WO2015069201A1 (fr) Tube de collecteur de chaleur
RU2491482C2 (ru) Система солнечного горячего водоснабжения
CN106940093B (zh) 太阳能供热系统以及利用其的太阳能发电系统
CN104482677A (zh) 蓄能太阳能集热棒及太阳能热水器
JP6548925B2 (ja) 太陽熱集熱システム
CN103017234A (zh) 太阳能锅炉供热系统
WO2017078134A1 (fr) Système de collecte de chaleur solaire et son procédé de fonctionnement
CN106014892A (zh) 一种可持续太阳能发电工艺
CN205048760U (zh) 一种真空管型模块化储热太阳能锅炉
KR101218192B1 (ko) 태양열온수장치
CN105698411A (zh) 一种太阳能即热器
CN105673367A (zh) 超高温槽式太阳能光热发电系统
CN103250011A (zh) 高功率塔接收器构造
CN109340879A (zh) 一种太阳能供暖系统
CN210486130U (zh) 一种具有储存热量功能的液体加热装置

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14816436

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 19/10/2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14816436

Country of ref document: EP

Kind code of ref document: A1