AU2006256382A2 - Heat exchanger for solar energy generators - Google Patents
Heat exchanger for solar energy generators Download PDFInfo
- Publication number
- AU2006256382A2 AU2006256382A2 AU2006256382A AU2006256382A AU2006256382A2 AU 2006256382 A2 AU2006256382 A2 AU 2006256382A2 AU 2006256382 A AU2006256382 A AU 2006256382A AU 2006256382 A AU2006256382 A AU 2006256382A AU 2006256382 A2 AU2006256382 A2 AU 2006256382A2
- Authority
- AU
- Australia
- Prior art keywords
- fins
- edges
- heat exchanger
- previous
- exchanger according
- 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
Links
Classifications
-
- 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
- F24S10/755—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 otherwise bent, e.g. zig-zag
-
- 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
- F24S2010/751—Special fins
-
- 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
- F24S2010/751—Special fins
- F24S2010/752—Special fins extending obliquely
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
PAOPER\KLW2OO80062S6382 Ig spa dox-2J1I208 00 -1- HEAT EXCHANGER FOR SOLAR ENERGY GENERATORS The present invention relates to a heat exchanger for solar energy generators, and in particular to a heat exchanger which can be employed in the collectors receiving the solar rays from the reflectors of these generators.
00 M The known heat exchangers US 4290419) for solar energy generators generally comprise one or more ducts which are arranged with the longitudinal axis \substantially perpendicular with respect to the solar rays and which are crossed by a fluid Sto be heated with the energy transmitted by these rays. A plurality of fins can be arranged transversely with respect to the ducts. The efficiency of the heat exchange between the outer surface of the ducts and the fluid flowing therein depends on many factors, among which the shape, the material and the size of the same ducts.
It is therefore an object of the present invention to improve the efficiency of the known heat exchangers. Said object is achieved with a heat exchanger, the main features of which are disclosed in the first claim and other features are disclosed in the subsequent claims.
Thanks to the particular fins which is provided with, the heat exchanger according to the present invention has a high efficiency in absorbing the solar energy. As a matter of fact, the arrangement and the "funnel" shape of said fins allows to absorb in an optimal manner not only the energy directly transmitted by the solar rays hitting the fins, but also the energy, even if very low, reflected by these fins.
Further advantages and features of the heat exchanger according to the present invention will become clear to those skilled in the art from the following detailed and nonlimiting description of an embodiment thereof with reference to the attached drawings, wherein: figure 1 shows a partial perspective view of the heat exchanger; figure 2 shows a partial and enlarged side view of the heat exchanger of figure 1; and figure 3 shows a partial perspective view of the heat exchanger of figure 1 in its case.
Referring to figures 1 and 2, it is seen that the heat exchanger according to the present invention comprises in a known way one or more ducts 1 suitable for being exposed to a source of solar rays 2, for example the reflector of a solar energy generator, and for containing a fluid to be heated with the energy transmitted by these rays. Ducts WO 2006/131946 PCT/IT2006/000382 -2- 1 are preferably arranged parallel on a plane and are mutually connected by connections 3 fixed to their ends, so as to form one or more serpentines.
According to the invention, a plurality of fins 4, for example rectangular, are arranged transversely with respect to ducts 1, in particular are provided with holes for being crossed by the latter. At least one of edges 4a, 4b turned toward the solar rays 2 of two adjacent fins 4 is inclined so that these edges 4a, 4b converge with an angle a less than 90', and so on for the other fins 4, so as to form a series of pairs of fins 4 with edges 4a, 4b converging two by two. Preferably, the distance between the ends of the contiguous edges 4a, 4b of two converging fins 4 is substantially null. At least one of edges 4c, 4d of two adjacent fins 4, which are opposite with respect to the converging edges 4a, 4b of the same fins 4, is inclined so that these edges 4c, 4d diverge with an angle b less than 900, and so on for the other fins 4, so as to form a series of pairs of fins 4 with edges 4c, 4d diverging two by two where edges 4a, 4b of the same fins 4 converge. Fins 4 form thus an at least partially triangular wave which develops along the longitudinal axis of ducts 1. Angles a and/or b between the converging edges 4a, 4b or the diverging edges 4c, 4d of fins 4 are preferably comprised between 250 and 45' In particular, angles a and b are substantially the same. Fins 4 and/or ducts 1 are coated with dark and opaque paints for improving the solar energy absorption.
Figure 3 shows fins 4 enclosed in an inner case 5 open only from the side turned toward the solar rays 2. This inner case 5 is coated by a layer of an insulating material 6, in turn covered by an outer case 7. The ends of ducts 1 and connectors 3 are housed in a container 8 provided with holes for mounting and connecting the heat exchanger to the solar energy generator.
Possible variations and/or additions may be made by those skilled in the art to the hereinabove described and illustrated embodiment of the invention while remaining within the scope of the same invention.
Claims (6)
1. Heat exchanger comprising one or more ducts suitable for being exposed to a I source of solar rays and for containing a fluid to be heated with the energy transmitted by 00 these rays, wherein a plurality of fins are arranged transversely with respect to the ducts, n characterized in that at least one of the edges turned toward the solar rays of two adjacent Sfins is inclined so that these edges converge with an angle less than 90', and so on for Sthe other fins, so as to form a series of pairs of fins with the edges converging two by two.
2. Heat exchanger according to the previous claim, characterized in that the distance between the ends of the contiguous edges of two converging fins is substantially null.
3. Heat exchanger according to one of the previous claims, characterized in that at least one of the edges of two adjacent fins, which are opposite with respect to the converging edges of the same fins, is inclined so that these edges diverge with an angle (b) less than 900, and so on for the other fins, so as to form a series of pairs of fins with the edges diverging two by two where the edges of the same fins converge.
4. Heat exchanger according to the previous claim, characterized in that the angles (a, b) between the converging edges and/or the diverging edges of the fins are comprised between 250 and 450. Heat exchanger according to the previous claim, characterized in that the angles (a, b) between the converging edges and the diverging edges of the fins are substantially the same.
6. Heat exchanger according to one of the previous claims, characterized in that the fins form an at least partially triangular wave which develops along the longitudinal axis of the ducts. P:'OPER\KL\2008\2006256382 I spA doc-2/WM20 00 O -4-
7. Heat exchanger according to one of the previous claims, characterized in that the fins and/or the ducts are coated with dark and opaque paints. I 8. Heat exchanger according to one of the previous claims, characterized in that the 00 M 5 fins are enclosed in an inner case which is open only from the side turned toward the solar Vt rays and is coated by a layer of an insulating material, in turn covered by an outer case. ,I O S9. Heat exchanger according to one of the previous claims, characterized in that the ducts are arranged parallel on a plane and are mutually connected by connections fixed to their ends, so as to form one or more serpentines.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2005A001062 | 2005-06-09 | ||
IT001062A ITMI20051062A1 (en) | 2005-06-09 | 2005-06-09 | HEAT EXCHANGER FOR SOLAR ENERGY GENERATORS |
PCT/IT2006/000382 WO2006131946A1 (en) | 2005-06-09 | 2006-05-22 | Heat exchanger for solar energy generators |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2006256382A1 AU2006256382A1 (en) | 2006-12-14 |
AU2006256382A2 true AU2006256382A2 (en) | 2008-03-06 |
Family
ID=36829698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2006256382A Abandoned AU2006256382A1 (en) | 2005-06-09 | 2006-05-22 | Heat exchanger for solar energy generators |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1888979A1 (en) |
AU (1) | AU2006256382A1 (en) |
IL (1) | IL187852A0 (en) |
IT (1) | ITMI20051062A1 (en) |
MX (1) | MX2007015498A (en) |
WO (1) | WO2006131946A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009025002A1 (en) * | 2007-08-21 | 2009-02-26 | Reginald Ian Williams | Heat exchanger for solar energy generators |
EP2362158A1 (en) * | 2010-02-19 | 2011-08-31 | Ernst Schweizer AG, Metallbau | Solar collector |
US8863741B2 (en) * | 2011-04-08 | 2014-10-21 | Cameron R MacKay | Solar air heating device |
DE102011075357A1 (en) * | 2011-05-05 | 2012-11-08 | Behr Gmbh & Co. Kg | Solar panel for absorbing sunlight |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064868A (en) * | 1976-10-08 | 1977-12-27 | Halstead Industries, Inc. | Solar heat collector |
FR2385053A1 (en) * | 1977-03-25 | 1978-10-20 | Uranus Sa | Solar heating panel with large heat absorbent area - provided by blades through which the heat collecting fluid passes |
DE2719832A1 (en) * | 1977-05-04 | 1978-11-16 | Wolfgang Jokubeit Herstellung | Louvred solar collector with blades fixed to piping system - has inner blade edges curved to form radiation traps |
US4290419A (en) | 1979-06-28 | 1981-09-22 | Rabedeaux Richard W | Multi systems solar collector |
IT1168517B (en) * | 1981-02-27 | 1987-05-20 | Solaris Srl | IMPROVEMENT OF FLAT SOLAR COLLECTORS WITH FINNED TUBES |
-
2005
- 2005-06-09 IT IT001062A patent/ITMI20051062A1/en unknown
-
2006
- 2006-05-22 WO PCT/IT2006/000382 patent/WO2006131946A1/en active Application Filing
- 2006-05-22 EP EP06745360A patent/EP1888979A1/en not_active Withdrawn
- 2006-05-22 AU AU2006256382A patent/AU2006256382A1/en not_active Abandoned
- 2006-05-22 MX MX2007015498A patent/MX2007015498A/en not_active Application Discontinuation
-
2007
- 2007-12-03 IL IL187852A patent/IL187852A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
ITMI20051062A1 (en) | 2006-12-10 |
AU2006256382A1 (en) | 2006-12-14 |
EP1888979A1 (en) | 2008-02-20 |
MX2007015498A (en) | 2008-04-02 |
WO2006131946A1 (en) | 2006-12-14 |
IL187852A0 (en) | 2008-03-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 13 FEB 2008 |
|
MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |