US20130000877A1 - Heat transfer tube - Google Patents

Heat transfer tube Download PDF

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Publication number
US20130000877A1
US20130000877A1 US13/515,153 US201013515153A US2013000877A1 US 20130000877 A1 US20130000877 A1 US 20130000877A1 US 201013515153 A US201013515153 A US 201013515153A US 2013000877 A1 US2013000877 A1 US 2013000877A1
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US
United States
Prior art keywords
latent heat
accumulator
pipe element
thermo chemical
annular segments
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US13/515,153
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English (en)
Inventor
Thomas Bauer
Bernd Hachmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Assigned to DEUTSCHES ZENTRUM FUR LUFT- UND RAUMFAHRT E. V. reassignment DEUTSCHES ZENTRUM FUR LUFT- UND RAUMFAHRT E. V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HACHMANN, BERND, BAUER, THOMAS
Assigned to DEUTSCHES ZENTRUM FUR LUFT- UND RAUMFAHRT E.V. reassignment DEUTSCHES ZENTRUM FUR LUFT- UND RAUMFAHRT E.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: F.W. BROKELMANN ALUMINIUMWERK GMBH & CO. KG
Publication of US20130000877A1 publication Critical patent/US20130000877A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
    • 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
    • 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
    • F28D2020/0004—Particular heat storage apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
    • 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

Definitions

  • the present invention relates to a latent heat accumulator or thermo chemical comprising at least one heat transfer pipe comprising a pipe element and a number of ribs arranged around the outer circumference of the pipe element and extending outwards and a storage material surrounding said heat transfer pipe.
  • Sensitive heat accumulators use the tangible heat or the heat capacity of a material. They change the temperature level of the storage material when loading and unloading.
  • Latent heat accumulators use, for example, the enthalpy of reversible thermodynamic state changes of a storage medium, in particular the phase transition from solid to liquid and vice versa.
  • a phase change material provided in the latter is melted.
  • the phase change material absorbs a large amount of heat energy in the form of the fusion heat. Due to the reversibility of this process the phase change material gives off this amount of heat again when solidifying.
  • thermo chemical heat accumulators which use the enthalpy of reversible chemical reactions, such as for example absorption and desorption processes based upon chemisorption.
  • heat transfer pipes When loading a heat accumulator heat must be transferred to the storage medium.
  • Heat transfer pipes can be used by means of which heat is transferred indirectly from a medium flowing through to the storage medium.
  • Heat transfer pipes comprise a pipe element for guiding the medium through.
  • outwardly extending ribs are normally arranged around the outer circumference of the pipe element.
  • the ribs can be formed integrally with the pipe element, they can be in metallic contact with the pipe element, or they are connected metallically to the pipe element by a solder or weld connection.
  • the ribs are produced around the outer circumference of the pipe element for example with the aid of a rolling process.
  • this integral design is disadvantageous in that the pipe element and the ribs must be made of the same material, due to which the requirements for high temperature stability on the inside and high heat conductivity on the outside can not be fulfilled optimally.
  • Bimetal pipes do not have this advantage, but due to the different heat expansions of the components can only be used within a restricted temperature range. In this case the pipe element and rib materials can accordingly not be chosen arbitrarily.
  • the configuration possibilities for the rib geometry are restricted by the production process. Therefore in particular the rib diameter that can be produced by a rolling process is too small.
  • the ribs can be fastened onto the outer circumference of the pipe element in the form of separate components.
  • annular elements in the form of metal sheets defining ribs that are arranged around the outer circumference of the pipe element, whereupon the pipe can be widened from the inside in order to secure the annular element on the pipe element.
  • a poor thermotechnical connection of the pipe element and ribs is achieved here.
  • the maximum temperature for use is also restricted.
  • the wall thickness of the pipe element is limited in that it must be allowed to widen to the desired degree.
  • annular elements of the type described above or also ribs in the form of strips of metal sheet or the like can be soldered or welded to the outer circumference of the pipe element.
  • the compatibility of the solder must be guaranteed here however.
  • DE-A-2002572 discloses an environmental air evaporator with heat transfer pipes, wherein the ribs are formed as annular segments encompassing the pipe elements in a clamping manner.
  • U.S. Pat. No. 3,280,907 discloses a heat transfer device having a heat transfer pipe, which is designed in a similar way, wherein the annular segments forming the ribs can be held on the corresponding pipe element by means of a spring-elastic clamping device.
  • the currently available heat transfer pipes differ therefore as regards the maximum temperature for use, the possible configurations as regards the rib geometry, the maximum wall thickness of the pipe element, the quality of the thermotechnical connection between the pipe element and the ribs, the compatibility of the materials to the pipe element and the ribs, and the compatibility of the solder and weld materials.
  • the present invention provides a heat transfer pipe of the initially mentioned kind, wherein the ribs are formed on annular segments encompassing the pipe element and fastened to one another with a spring-elastic clamping device, in particular on two annular segments respectively forming a half shell and wherein the at least one heat transfer pipe is arranged substantially vertically within the heat accumulator.
  • the clamping device Due to their spring elasticity the clamping device always guarantees good thermal contact between the pipe element and the annular segments, and accordingly a good thermotechnical connection between the pipe element and the ribs because it reacts flexibly to thermal material expansions.
  • the thermal contact between the pipe element and the annular segments is moreover constant over the length of the annular segments.
  • the configuration of the ribs, in particular the rib diameter, can be chosen substantially arbitrarily.
  • the substantially vertical arrangement of the at least one heat transfer pipe within the heat accumulator ensures free volume expansion of the phase change material in the vertical direction within the heat accumulator during the phase change from solid to liquid or vice versa, whereby a proper operation of the latent heat accumulator is guaranteed.
  • the maximum wall thickness of the pipe element is in no way restricted either.
  • the clamp element(s) is/are formed from spring steel. Accordingly, thermally caused expansions or shrinkage can be flexibly absorbed so that a very good thermotechnical connection of the pipe element and the annular segments is always guaranteed.
  • each clamp element is a flexible part comprising a base section and two clamp sections to be extended over one another from opposite sides of the base section, end sections preferably splayed apart from one another adjoining the clamp sections and acting as a push-on aid, for example while pushing onto a clamping bar formed on the annular segments. Accordingly each clamp element has a substantially omega-shaped cross-section.
  • the annular segments are preferably in the form of extrusion moulded profiles, the ribs extending in the longitudinal direction of the pipe element.
  • the extrusion moulding constitutes on the one hand an inexpensive production method.
  • the cross-section of the ribs is constant in the longitudinal direction of the heat transfer pipe, and when used within a heat accumulator this allows free volume expansion of the storage material in the longitudinal direction of the heat transfer pipe. Accordingly, thermomechanical stresses caused by the volume expansion of the storage material can be eliminated or at least reduced. This is particularly significant with latent heat accumulators because the phase change materials used in the latter undergo a large volume expansion in the phase change from solid to liquid or vice versa.
  • the geometry of the pipe element and that of the annular segments are matched to one another such that the annular segments rest with substantially their entire surface against the pipe element. In this way good heat transfer from the pipe element to the annular segments is guaranteed.
  • the annular segments have clamping bars which are encompassed by the clamp elements.
  • the clamping bars are form-matched to the clamp elements here so that the clamp elements are easy to fit and a secure hold of the annular segments against the pipe element with good contacting is guaranteed.
  • the annular segments are preferably produced from an aluminium alloy or from unalloyed aluminium, in particular from alloys of aluminium groups 1xxx, 3xxx and 6xxx. These materials have shown to be particularly advantageous.
  • the pipe element can be a welded or a drawn pipe element.
  • the pipe element is preferably produced from steel or stainless steel.
  • the storage material surrounding the heat transfer pipe is a phase change material, particularly salts or salt mixtures, in particular alkali metal nitrates, such as for example NaNO3 or KNo 3 -NaNO 3 , nitrites, sulphates, carbonates, chlorides, hydroxides, bromides, thiocyanates and fluorides or combinations of the latter, in particular anhydrous salts with a melting temperature of above 120° C. or salt hydrates with a maximum phase transformation up to 200° C.
  • alkali metal nitrates such as for example NaNO3 or KNo 3 -NaNO 3
  • nitrites such as for example NaNO3 or KNo 3 -NaNO 3
  • nitrites such as for example NaNO3 or KNo 3 -NaNO 3
  • sulphates such as for example NaNO3 or KNo 3 -NaNO 3
  • carbonates chlorides, hydroxides, bromides, thiocyanates and fluorides or combinations
  • FIG. 1 a perspective view that shows a heat transfer pipe according to one embodiment of the present invention
  • FIG. 2 a side view of the heat transfer pipe shown in FIG. 1 which shows the face side of the latter;
  • FIG. 3 a diagram that shows the temperature developments over a plurality of melting/solidifying cycles.
  • FIGS. 1 and 2 show a heat transfer pipe 10 according to one embodiment of the present invention.
  • the heat transfer pipe 10 comprises a pipe element 12 , two annular segments 16 and 18 forming ribs 14 , 15 and which respectively form a half shell disposed around the outer circumference of the pipe element 12 and surrounding the latter, and two clamp elements 20 with which the annular segments 16 and 18 are fastened to one another and held on the pipe element 12 .
  • the pipe element 12 is a steel pipe with a circular lateral surface as viewed in cross-section.
  • the annular segments 16 and 18 are respectively in the form of extrusion moulded profiles made of an aluminium alloy so that they have a constant cross-section in the longitudinal direction L.
  • the geometry of the pipe element 12 and that of the annular segments 16 and 18 are matched to one another so that the annular segments 16 and 18 respectively lie with substantially their entire surface with an annular segment section 22 and 23 having a circular segment-shaped cross-section against the lateral surface of the pipe element 12 .
  • On the free ends of the annular segment sections 22 , 23 respectively radially outwardly projecting clamping bars 24 , 25 are formed which are encompassed by the clamp elements 20 .
  • the clamping bars 24 , 25 are respectively provided on their free ends with snap tabs 26 , 27 .
  • the ribs 14 , 15 of the annular segments 16 and 18 have a plurality of branches by means of which the surface area of the ribs 14 , 15 is increased.
  • the clamp elements 20 are flexible parts produced from spring steel comprising a base section 28 and two clamp sections 30 and 32 to be extended over one another from opposite sides of the base section 28 , against which end sections 34 and 36 splayed apart from one another and which serve as a push-on aid rest.
  • annular segments 16 and 18 are laid with their annular segment sections 22 , 23 around the lateral surface of the pipe element 12 .
  • the four clamp elements 20 are then pushed onto the clamping bars 24 , 25 formed on the annular segments 16 and 18 so that the annular segments 16 and 18 are fastened to one another and held by pressure against the pipe element 12 .
  • the annular segment sections 22 , 23 of the annular segments 16 and 18 lie with substantially their entire surface against the lateral surface of the pipe element 12 .
  • the configuration of the heat transfer pipe 10 shown in FIGS. 1 and 2 is advantageous in that by providing a number of annular segments 16 and 18 surrounding the pipe element 12 and fastened to one another with clamp elements 20 , the use of materials with different expansion coefficients for the pipe element 12 and the ribs 14 , 15 at high maximum temperatures of use is made possible, such as in the present case steel for the pipe element 12 and an aluminium alloy for the ribs 14 , 15 .
  • the clamp elements 20 always guarantee a good thermal contact between the pipe element 12 and the annular segments 16 and 18 , and accordingly a good thermotechnical connection between the pipe element 12 and the ribs 14 , 15 because they can react flexibly to thermal material expansions.
  • the configuration of the ribs 14 , 15 can substantially be chosen arbitrarily, and this applies in particular to the outer diameter of the ribs 14 , 15 .
  • the maximum wall thickness of the pipe element 12 is in no way restricted either.
  • FIG. 3 shows the results of a series of tests which was carried out with a heat transfer pipe 10 of the type shown in FIGS. 1 and 2 .
  • the heat transfer pipe 10 was inserted into a latent heat accumulator (not detailed). 1,070 g sodium nitrate with a melting temperature of 306° C. was used as a phase change material.
  • the heat was introduced and removed via the heat transfer pipe 10 by means of air cooling and electrical heating.
  • the quality of the connection produced with the aid of the clamp elements 20 between the pipe element 12 and the annular segments 16 and 18 was determined over 115 melting/solidifying cycles.
  • One cycle was sub-divided here into four consecutive phases as follows:
  • the temperature progressions T 1 , T 10 , T 30 , T 50 and T 115 (the index corresponds to the cycle number) in FIG. 3 show that the time until there is total introduction of the heat with a jump from 280° C. to 330° C. at the time “5 minutes” (phases 2 and 3) is kept almost constant over the number of cycles. After approx. 35 minutes there is a state of equilibrium with all measurements. In this state the flow of heat on the lateral surface of the pipe element 12 is almost 0. Therefore the results show that the contact resistance between the pipe element 12 and the annular segments 16 and 18 is practically unchanged over 115 melting/solidifying cycles.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints With Sleeves (AREA)
  • Thermal Insulation (AREA)
US13/515,153 2009-12-11 2010-07-06 Heat transfer tube Abandoned US20130000877A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009057904A DE102009057904A1 (de) 2009-12-11 2009-12-11 Wärmeübertragungsrohr
DE102009057904.4 2009-12-11
PCT/EP2010/059673 WO2011069693A1 (de) 2009-12-11 2010-07-06 Wärmeübertragungsrohr

Publications (1)

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US20130000877A1 true US20130000877A1 (en) 2013-01-03

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US13/515,153 Abandoned US20130000877A1 (en) 2009-12-11 2010-07-06 Heat transfer tube

Country Status (10)

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US (1) US20130000877A1 (de)
EP (1) EP2510302B1 (de)
CN (1) CN102741644A (de)
AU (1) AU2010330335B2 (de)
DE (1) DE102009057904A1 (de)
ES (1) ES2463769T3 (de)
MY (1) MY155998A (de)
SG (1) SG181617A1 (de)
WO (1) WO2011069693A1 (de)
ZA (1) ZA201205090B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD696211S1 (en) * 2011-10-14 2013-12-24 Korea Bundy Co., Ltd. Heat exchange tube
US20150338108A1 (en) * 2013-07-26 2015-11-26 Eco Factory Co., Ltd. Air conditioning system and operation method for air conditioning system
US20170278685A1 (en) * 2014-08-29 2017-09-28 Sputtering Components, Inc. Dual power feed rotary sputtering cathode
US10066844B2 (en) * 2016-03-02 2018-09-04 Eco Factory Co., Ltd. Heating element cover component, heating element cover, radiant cooling and heating apparatus, and air conditioning system
RU198603U1 (ru) * 2019-10-22 2020-07-20 Акционерное общество "Златоустовский машиностроительный завод" Теплообменная панель для радиатора отопления
US20220028751A1 (en) * 2014-12-22 2022-01-27 Hamilton Sundstrand Corporation Pins for heat exchangers
US20220243991A1 (en) * 2021-02-02 2022-08-04 Taiwan Microloops Corp. Wind-guiding type heat dissipation module
RU217199U1 (ru) * 2023-02-15 2023-03-22 Акционерное общество "Фирма Изотерм" Фиксатор, применяемый в панели для теплообменника
CN115979036A (zh) * 2022-11-23 2023-04-18 南京航空航天大学 一种环形翅片、其生成方法及相变储热装置
WO2024204235A1 (ja) * 2023-03-31 2024-10-03 愛知製鋼株式会社 化学蓄熱装置

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FR2996631B1 (fr) * 2012-10-08 2015-02-06 Commissariat Energie Atomique Echangeur thermique pour systeme de stockage thermique
FR3024534B1 (fr) * 2014-07-31 2019-03-22 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif de stockage d'energie par materiau a changement de phase et un procede de stockage associe
WO2017016646A1 (de) 2015-07-30 2017-02-02 Linde Aktiengesellschaft Wärmeübertragungsrohr, wärmespeicher und verfahren zum herstellen eines wärmeübertragungsrohrs
WO2017016647A1 (de) 2015-07-30 2017-02-02 Linde Aktiengesellschaft Wärmeübertragungsrohr, wärmespeicher und verfahren zum herstellen eines wärmeübertragungsrohrs
CN105318767A (zh) * 2015-08-15 2016-02-10 何家密 主动式热交换以及其应用
DE102017114141B4 (de) 2017-06-26 2021-12-09 Deutsches Zentrum für Luft- und Raumfahrt e.V. Wärmeübertragungsrohranordnung sowie Wärmespeicher mit einer solchen Wärmeübertragungsrohranordnung
DE102017213718B4 (de) 2017-08-07 2023-06-01 Deutsches Zentrum für Luft- und Raumfahrt e.V. Wärmespeichervorrichtung und Verfahren zum Speichern oder Bereitstellen von Wärme mittels einer Wärmespeichervorrichtung
CN108507393B (zh) * 2018-05-31 2024-03-15 国能龙源蓝天节能技术有限公司 三维肋片结构的固液相变储热取热装置
DE102018118390A1 (de) * 2018-07-30 2020-01-30 Deutsches Zentrum für Luft- und Raumfahrt e.V. Speichervorrichtung, thermochemische Speichereinheit und Verfahren zum Betreiben einer thermochemischen Speichereinheit
DE102019102955B3 (de) * 2019-02-06 2020-02-13 Deutsches Zentrum für Luft- und Raumfahrt e.V. Wärmespeichervorrichtung und Verfahren zum Speichern oder Bereitstellen von Wärme mittels einer Wärmespeichervorrichtung
DE102019207965B4 (de) * 2019-05-29 2024-01-25 Deutsches Zentrum für Luft- und Raumfahrt e.V. Wärmespeichervorrichtung und Verfahren zum Speichern und/oder Bereitstellen von Wärme
IT201900015488A1 (it) * 2019-09-03 2021-03-03 Irca Spa Riscaldatore elettrico per elettrodomestico
FR3164523A1 (fr) 2024-07-09 2026-01-16 Commissariat A L' Energie Atomique Et Aux Energies Alternatives Système de stockage thermique mettant en œuvre un matériau à changement de phase

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US3877128A (en) * 1969-01-21 1975-04-15 Airco Inc Method of producing a finned tube heat exchanger
FR2054456A1 (en) * 1969-07-08 1971-04-23 Frantz Rene Heat exchanger for treating or cooling - installation
US3996919A (en) * 1975-11-21 1976-12-14 Sun Oil Company Of Pennsylvania System for collecting and storing solar energy
US4131158A (en) * 1976-01-23 1978-12-26 Institut Fur Kerntechnik Und Energiewandlung E.V. Storage arrangement for thermal energy
US4200148A (en) * 1978-04-03 1980-04-29 Rockwell International Corporation Storing and extracting latent heat
US4244098A (en) * 1978-05-26 1981-01-13 General Electric Company Method of assembling a dynamoelectric machine and an auxiliary cooling device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD696211S1 (en) * 2011-10-14 2013-12-24 Korea Bundy Co., Ltd. Heat exchange tube
US20150338108A1 (en) * 2013-07-26 2015-11-26 Eco Factory Co., Ltd. Air conditioning system and operation method for air conditioning system
US20170278685A1 (en) * 2014-08-29 2017-09-28 Sputtering Components, Inc. Dual power feed rotary sputtering cathode
US20220028751A1 (en) * 2014-12-22 2022-01-27 Hamilton Sundstrand Corporation Pins for heat exchangers
US11933554B2 (en) * 2014-12-22 2024-03-19 Hamilton Sundstrand Corporation Pins for heat exchangers
US10066844B2 (en) * 2016-03-02 2018-09-04 Eco Factory Co., Ltd. Heating element cover component, heating element cover, radiant cooling and heating apparatus, and air conditioning system
RU198603U1 (ru) * 2019-10-22 2020-07-20 Акционерное общество "Златоустовский машиностроительный завод" Теплообменная панель для радиатора отопления
US20220243991A1 (en) * 2021-02-02 2022-08-04 Taiwan Microloops Corp. Wind-guiding type heat dissipation module
CN115979036A (zh) * 2022-11-23 2023-04-18 南京航空航天大学 一种环形翅片、其生成方法及相变储热装置
RU217199U1 (ru) * 2023-02-15 2023-03-22 Акционерное общество "Фирма Изотерм" Фиксатор, применяемый в панели для теплообменника
WO2024204235A1 (ja) * 2023-03-31 2024-10-03 愛知製鋼株式会社 化学蓄熱装置

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MY155998A (en) 2015-12-31
AU2010330335A1 (en) 2012-08-02
EP2510302B1 (de) 2014-02-12
ZA201205090B (en) 2013-03-27
EP2510302A1 (de) 2012-10-17
CN102741644A (zh) 2012-10-17
DE102009057904A1 (de) 2011-06-16
SG181617A1 (en) 2012-07-30

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