US20060237000A1 - Roof panel suitable for heat-exchanging applications, and heat-exchanging roof assembly incorporating the same - Google Patents

Roof panel suitable for heat-exchanging applications, and heat-exchanging roof assembly incorporating the same Download PDF

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Publication number
US20060237000A1
US20060237000A1 US11/285,972 US28597205A US2006237000A1 US 20060237000 A1 US20060237000 A1 US 20060237000A1 US 28597205 A US28597205 A US 28597205A US 2006237000 A1 US2006237000 A1 US 2006237000A1
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US
United States
Prior art keywords
coolant
roof
heat
lower wall
exchanging
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
US11/285,972
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English (en)
Inventor
Kuo Cheng
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of US20060237000A1 publication Critical patent/US20060237000A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • 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
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • F24S10/753—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations the conduits being parallel to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

Definitions

  • the invention relates to a roof panel, more particularly to a roof panel suitable for heat-exchanging applications.
  • the invention also relates to a roof assembly, more particularly to a heat-exchanging roof assembly.
  • a conventional heat-exchanging device 1 such as a solar water heater, includes a storage tank 11 , a heat collector 12 , and first, second and third pipes 13 , 13 ′, 13 ′′.
  • the storage tank 11 is disposed above the heat collector 12 , and is in fluid communication with the first, second and third pipes 13 , 13 ′, 13 ′′.
  • the heat collector 12 has a plurality of copper pipelines 120 connected in parallel to each other, and is formed with a coolant inlet 121 and a coolant outlet 122 on lower and upper ends, respectively.
  • the pipelines 120 are for conducting solar energy, and are in fluid communication with the coolant inlet 121 and the coolant outlet 122 so as to guide water (not shown), which serves as a heat-exchanging medium, to flow from the coolant inlet 121 to the coolant outlet 122 .
  • the storage tank 11 is connected to the coolant inlet 121 and the coolant outlet 122 through the first and second pipes 13 , 13 ′, respectively.
  • the third pipe 13 ′′ is connected to the storage tank 11 for supplying heated water in the storage tank 11 to a household, in the direction as illustrated by arrow (C), or for replenishing water in the storage tank 11 , in the direction as illustrated by arrow (D).
  • the conventional heat-exchanging device 1 is mounted on and is supported inclinedly by a support framework 2 , which in turn is installed on a roof of a building structure (not shown).
  • a support framework 2 which in turn is installed on a roof of a building structure (not shown).
  • the conventional heat-exchanging device 1 , the support framework 2 , and the roof are separate components, higher installation costs are incurred.
  • the object of the present invention is to provide a roof panel that is suitable for heat-exchanging applications.
  • Another object of the present invention is to provide a cost-effective heat-exchanging roof assembly that incorporates an array of the roof panels.
  • a roof panel comprising a hollow panel body that is made from a heat conducting material, that confines a coolant space, and that includes an upper wall part and a lower wall part disposed below the upper wall part.
  • the panel body is formed with a coolant inlet and a coolant outlet that are in fluid communication with the coolant space and that permit flow of a liquid coolant into and out of the coolant space.
  • At least one of the upper and lower wall parts has an inner wall surface that confronts the coolant space and that is formed with a guide channel.
  • the guide channel extends from the coolant inlet to the coolant outlet, and is in fluid communication with the coolant space so as to guide liquid coolant flow from the coolant inlet to the coolant outlet.
  • a heat-exchanging roof assembly that includes an array of roof panels, and first and second piping networks.
  • Each of the roof panels includes a hollow panel body that is made from a heat conducting material, that confines a coolant space, and that includes an upper wall part and a lower wall part disposed below the upper wall part.
  • the panel body is formed with a coolant inlet and a coolant outlet that are in fluid communication with the coolant space and that permit flow of a liquid coolant into and out of the coolant space.
  • At least one of the upper and lower wall parts has an inner wall surface that confronts the coolant space and that is formed with a guide channel.
  • the guide channel extends from the coolant inlet to the coolant outlet, and is in fluid communication with the coolant space so as to guide liquid coolant flow from the coolant inlet to the coolant outlet.
  • the array includes first and second endmost rows of the roof panels. The coolant inlets of the roof panels in the second endmost row are in fluid communication with the coolant outlets of the roof panels in the first endmost row.
  • the first piping network is connected to the coolant inlets of the roof panels in the first endmost row for supplying the liquid coolant thereto.
  • the second piping network is connected to the coolant outlets of the roof panels in the second endmost row for collecting the liquid coolant flowing out of the second endmost row.
  • FIG. 1 is a perspective view of a conventional heat-exchanging device
  • FIG. 2 is a perspective view of a roof panel according to the first preferred embodiment of the present invention.
  • FIG. 3 is a top view of a heat-exchanging roof assembly according to the second preferred embodiment of the present invention.
  • FIG. 4 is a fragmentary sectional view to illustrate roof panel connections in the second preferred embodiment
  • FIG. 5 is a fragmentary sectional view of the second preferred embodiment mounted to a roof framework.
  • FIG. 6 is a perspective view of a heat-exchanging roof assembly according to the third preferred embodiment of the present invention mounted to a roof framework.
  • a roof panel 3 includes a hollow panel body 31 that is made from a heat conducting metal material, that confines a coolant space 317 , and that includes an upper wall part 311 and a lower wall part 312 disposed below the upper wall part 311 .
  • the panel body 31 is formed with a coolant inlet 315 and a coolant outlet 316 that are in fluid communication with the coolant space 317 and that permit flow of a liquid coolant, such as water (not shown), into and out of the coolant space 317 .
  • the panel body 31 is a rectangular panel body.
  • At least one of the upper and lower wall parts 311 , 312 has an inner wall surface that confronts the coolant space 317 and that is formed with a guide channel 32 .
  • the guide channel 32 extends from the coolant inlet 315 to the coolant outlet 316 , and is in fluid communication with the coolant space 317 so as to guide liquid coolant flow from the coolant inlet 315 to the coolant outlet 316 .
  • the guide channel 32 is formed in the upper wall part 311 , and can be formed by pressing the upper wall part 311 from the inner wall surface away from the coolant space 317 .
  • the guide channel 32 can also be formed by cutting away part of the upper wall part 311 from the inner wall surface away from the coolant space 317 .
  • this invention is not limited to this particular aspect.
  • the upper and lower wall parts 311 , 312 have opposite ends, and the panel body 31 further includes first and second end walls 313 , 314 that interconnect the upper and lower wall parts 311 , 312 at the opposite ends, respectively.
  • the coolant inlet 315 and the coolant outlet 316 are formed in the first and second end walls 313 , 314 , respectively.
  • the upper and lower wall parts 311 , 312 further have opposite lateral edges
  • the panel body 13 further includes first and second lateral walls 318 , 319 that interconnect the upper and lower wall parts 311 , 312 at the opposite lateral edges, respectively.
  • the first and second lateral walls 318 , 319 are provided respectively with first and second wing extensions 341 , 342 that extend therefrom and that are disposed outwardly of the coolant space 317 .
  • the first and second wing extensions 341 , 342 have arched cross-sections, as best illustrated in FIG. 4 .
  • the first wing extension 341 extends from the first lateral wall 318 at a junction of the first lateral wall 318 and the upper wall part 311 .
  • the second wing extension 342 extends from the second lateral wall 319 at a level between the upper and lower wall parts 311 , 312 .
  • At least one of the upper and lower wall parts 311 , 312 is formed with a plurality of bumps 33 that project into the coolant space 317 toward the other one of the upper and lower wall parts 311 , 312 .
  • the upper wall part 311 has an outer wall surface, and is pressed from the outer wall surface to result in the bumps 33 that project into the coolant space 317 .
  • the bumps 33 abut against and are welded to the lower wall part 312 .
  • the bumps 33 reinforce structural integrity of the roof panel 3 , and also help increase the effective heat-exchanging area when the roof panel 3 is supplied with the liquid coolant that flows through the coolant space 317 .
  • the panel body 31 can be formed by welding the upper and lower wall parts 311 , 312 , the first and second end walls 313 , 314 , and the first and second lateral walls 318 , 319 .
  • the panel body 31 can be formed by welding two thin U-shaped metal plates, one of which includes the upper wall part 311 and the first and second end walls 313 , 314 , the other one of which includes the lower wall part 312 and the first and second lateral walls 318 , 319 .
  • the panel body 31 can be formed by welding the upper wall part 311 and the first and second end walls 313 , 314 to a thin U-shaped metal plate that includes the lower wall part 311 and the first and second lateral walls 318 , 319 .
  • the coolant space 317 has a height of about 1 cm.
  • the coolant inlet 315 and the coolant outlet 316 of the panel body 31 have a male-female coupling configuration so that a pair of the roof panels 3 can be connected in a columnar direction.
  • the guide channel 32 of the panel body 31 is not limited to a linear channel, and may be a tortuous channel in other embodiments of this invention.
  • the outer wall surface of the panel body 31 is painted with a dark color to further enhance the heat-absorbing efficiency.
  • a heat-exchanging roof assembly 4 includes an array 41 of the roof panels 3 of the first preferred embodiment, and first and second piping networks 44 , 45 .
  • the array 41 includes a first endmost row 411 and a second endmost row 412 of the roof panels 3 .
  • the number of roof panels 3 to be included in each of the first endmost row 411 and the second endmost row 412 depends on a particular application.
  • the coolant inlets 315 of the roof panels 3 in the second endmost row 412 are in fluid communication with the coolant outlets 316 of the roof panels 3 in the first endmost row 411 .
  • the coolant inlets 315 of the roof panels 3 in the second endmost row 412 are connected directly and respectively to the coolant outlets 316 of the roof panels 3 in the first endmost row 411 .
  • the first piping network 44 is connected to a source 8 (partly shown in FIG. 3 ) of pressurized water, and to the coolant inlets 315 of the roof panels 3 in the first endmost row 411 for supplying the liquid coolant, e.g.
  • the second piping network 45 is connected to the coolant outlets 316 of the roof panels 3 in the second endmost row 412 for collecting the liquid coolant flowing out of the second endmost row 412 .
  • the second piping network 45 is also connected to a storage tank 7 disposed above the heat-exchanging roof assembly 4 for storing the liquid coolant flowing out of the second endmost row 412 .
  • the storage tank 7 has a valve 71 to permit user control of the liquid coolant flow out of the storage tank 7 .
  • the heat-exchanging roof assembly 4 further comprises a plurality of edge fastening units 42 , each of which fastens together an adjacent pair of the roof panels 3 in a same row of the array 41 .
  • Each of the edge fastening units 42 includes the first and second wing extensions 341 , 342 that extend respectively from the first and second lateral walls 318 , 319 of an adjacent pair of the roof panels 3 and that are disposed outwardly of the coolant spaces 317 of the adjacent pair of the roof panels 3 , and a fastener for fastening together the first and second wing extensions 341 , 342 .
  • the first and second wing extensions 341 , 342 are stacked one on top of the other, and the fastener includes two screw fasteners 421 that fastens together the first and second wing extensions 341 , 342 .
  • the heat-exchanging roof assembly 4 is adapted to be mounted to a slanted roof framework 6 , which includes a plurality of beams 61 equally spaced apart from each other at positions corresponding to the screw fasteners 421 .
  • each of the screw fasteners 421 is extended through the first and second wing extensions 341 , 342 , and engages threadedly a respective one of the beams 61 , such that the heat-exchanging roof assembly 4 is secured on the roof framework 6 .
  • the heat-exchanging roof assembly 4 when used for heat-exchanging applications, such as a solar water heater, water is supplied from the source 8 in the direction as illustrated by arrow (I) into the first piping network 44 . Subsequently, the water flows from the first piping network 44 into the coolant spaces 317 through the coolant inlets 315 of the roof panels 3 in the first endmost row 411 of the array 41 , as illustrated by arrows (E). As the water fills the coolant spaces 317 , solar energy is absorbed by the water from the roof panels 3 .
  • the heated water flows into the second piping network 45 through the coolant outlets 316 of the roof panels 3 in the second endmost row 412 of the array 41 , and subsequently into the storage tank 7 , as illustrated by arrows (F), (G), respectively.
  • the heated water collected in the storage tank 7 can be supplied to a household through the valve 71 in the direction as illustrated by arrow (H).
  • the heat-exchanging roof assembly 4 ′ differs from the second preferred embodiment in that the array 41 ′ of the heat-exchanging roof assembly 4 ′ further includes an intermediate set 413 of the roof panels 3 disposed between the first and second endmost rows 411 ′, 412 ′.
  • the coolant outlets 316 of the roof panels 3 in the first endmost row 411 ′ are connected to the coolant inlets 315 of the roof panels 3 in the intermediate set 413 , respectively.
  • the coolant inlets 315 of the roof panels 3 in the second endmost row 412 ′ are connected to the coolant outlets 316 of the roof panels 3 in the intermediate set 413 , respectively.
  • the intermediate set 413 in the array 41 ′ is not limited to a single row of the roof panels 3 in other embodiments of the present invention.
  • the roof panel 3 is made from a heat conducting material, when the heat-exchanging roof assembly 4 constructed from the array 41 of the roof panels 3 is mounted on the roof framework 6 , solar energy can be collected by the roof panels 3 . Since the coolant spaces 317 , the coolant inlets 315 , and the coolant outlets 316 of the array 41 together provide a coolant flow path for the liquid coolant supplied thereto, the liquid coolant absorbs heat from the array 41 as the liquid coolant flows through the coolant flow path. Therefore, the roof panel 3 and the roof assembly 4 are suitable for heat-exchanging applications. Since it is no longer required to have a separate heat-exchanging device, installation costs are lowered accordingly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US11/285,972 2005-04-26 2005-11-23 Roof panel suitable for heat-exchanging applications, and heat-exchanging roof assembly incorporating the same Abandoned US20060237000A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW094206509U TWM281155U (en) 2005-04-26 2005-04-26 Heat exchanging sheet for roof and heat exchanging device
TW94206509 2005-04-26

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US20060237000A1 true US20060237000A1 (en) 2006-10-26

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US (1) US20060237000A1 (ja)
JP (1) JP3118914U (ja)
TW (1) TWM281155U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090188489A1 (en) * 2006-06-13 2009-07-30 Willi Bihler Solar element with temperature control device
US20160356406A1 (en) * 2015-06-08 2016-12-08 Sharp Kabushiki Kaisha Hybrid solar module coupling and method of making

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012075412A (ja) * 2010-10-05 2012-04-19 Toho Leo Co ソーラーパネルを用いた屋上緑化の施工設備

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062350A (en) * 1976-06-04 1977-12-13 Reed Gerald C Solar water heater
US4088118A (en) * 1974-02-05 1978-05-09 Development Finance Corporation Of New Zealand Heat exchanger
US4186726A (en) * 1976-03-26 1980-02-05 The University Of Iowa Research Foundation Apparatus and method for collecting solar energy
US4211213A (en) * 1978-09-21 1980-07-08 Nissen Roland N Solar panel
US4212291A (en) * 1978-08-03 1980-07-15 The Franklin Institute Batten for mounting a unitary solar collector panel
US4269173A (en) * 1978-04-27 1981-05-26 Libbey-Owens-Ford Company System for mounting solar collector panels
US4299200A (en) * 1977-12-12 1981-11-10 University Of Iowa Research Foundation Apparatus and method for collecting solar energy
US4465061A (en) * 1982-04-19 1984-08-14 Mcmurtrie Thomas Solar energy heating panel
US4474172A (en) * 1982-10-25 1984-10-02 Chevron Research Company Solar water heating panel
US4559924A (en) * 1979-11-20 1985-12-24 The United States Of America As Represented By The United States Department Of Energy Thin film absorber for a solar collector
US4953537A (en) * 1989-09-18 1990-09-04 Inner Solar Roof System, Inc. Barrel-shaped solar roofing element and method for its manufacture
US6837236B1 (en) * 2002-08-21 2005-01-04 Michael Lichtenberger Solar energy conversion system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088118A (en) * 1974-02-05 1978-05-09 Development Finance Corporation Of New Zealand Heat exchanger
US4186726A (en) * 1976-03-26 1980-02-05 The University Of Iowa Research Foundation Apparatus and method for collecting solar energy
US4062350A (en) * 1976-06-04 1977-12-13 Reed Gerald C Solar water heater
US4299200A (en) * 1977-12-12 1981-11-10 University Of Iowa Research Foundation Apparatus and method for collecting solar energy
US4269173A (en) * 1978-04-27 1981-05-26 Libbey-Owens-Ford Company System for mounting solar collector panels
US4212291A (en) * 1978-08-03 1980-07-15 The Franklin Institute Batten for mounting a unitary solar collector panel
US4211213A (en) * 1978-09-21 1980-07-08 Nissen Roland N Solar panel
US4559924A (en) * 1979-11-20 1985-12-24 The United States Of America As Represented By The United States Department Of Energy Thin film absorber for a solar collector
US4465061A (en) * 1982-04-19 1984-08-14 Mcmurtrie Thomas Solar energy heating panel
US4474172A (en) * 1982-10-25 1984-10-02 Chevron Research Company Solar water heating panel
US4953537A (en) * 1989-09-18 1990-09-04 Inner Solar Roof System, Inc. Barrel-shaped solar roofing element and method for its manufacture
US6837236B1 (en) * 2002-08-21 2005-01-04 Michael Lichtenberger Solar energy conversion system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090188489A1 (en) * 2006-06-13 2009-07-30 Willi Bihler Solar element with temperature control device
US8307819B2 (en) * 2006-06-13 2012-11-13 Willi Bihler Solar element with temperature control device
US20160356406A1 (en) * 2015-06-08 2016-12-08 Sharp Kabushiki Kaisha Hybrid solar module coupling and method of making

Also Published As

Publication number Publication date
TWM281155U (en) 2005-11-21
JP3118914U (ja) 2006-02-09

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