CN111998547A - High-efficiency solar heat collecting pipe and manufacturing method thereof - Google Patents

High-efficiency solar heat collecting pipe and manufacturing method thereof Download PDF

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Publication number
CN111998547A
CN111998547A CN202010904184.XA CN202010904184A CN111998547A CN 111998547 A CN111998547 A CN 111998547A CN 202010904184 A CN202010904184 A CN 202010904184A CN 111998547 A CN111998547 A CN 111998547A
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CN
China
Prior art keywords
tube
pipe
medium
heat collecting
end cover
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Pending
Application number
CN202010904184.XA
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Chinese (zh)
Inventor
邹晓宇
李伟轩
张刚
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Ningbo Duncotek New Material Co ltd
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Ningbo Duncotek New Material Co ltd
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 Ningbo Duncotek New Material Co ltd filed Critical Ningbo Duncotek New Material Co ltd
Priority to CN202010904184.XA priority Critical patent/CN111998547A/en
Publication of CN111998547A publication Critical patent/CN111998547A/en
Pending legal-status Critical Current

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • 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
    • F24S40/10—Protective covers or shrouds; Closure members, e.g. lids
    • 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
    • F24S40/90—Arrangements for testing solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/70—Sealing means
    • 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

Abstract

The invention provides a high-efficiency solar heat collecting tube which comprises a light transmitting tube, an end cover and a heat collecting component, wherein the end part of the light transmitting tube is open, the end cover is connected with the open end of the light transmitting tube in a sealing mode, the heat collecting component is installed in the light transmitting tube, the heat collecting component comprises a heat absorbing plate and a medium tube, the heat absorbing plate is made of metal, a heat absorbing film is plated on the upper surface of the heat absorbing plate, the medium tube is installed on the lower surface of the heat absorbing plate in a fitting mode, the medium tube is in surface contact with the heat absorbing plate, two ends of the medium tube penetrate through the end cover and then extend out of the light transmitting tube, and a vacuum area is formed in the. The high-efficiency solar heat collecting pipe has the advantages of simple and compact structure, high heat utilization rate, good heat collecting effect and long service life.

Description

High-efficiency solar heat collecting pipe and manufacturing method thereof
Technical Field
The invention relates to a heat collecting pipe, in particular to a high-efficiency solar heat collecting pipe.
Background
Solar heat collection is a core element of a solar water heater, is known as the heart of the solar water heater, and the quality of the heat collection tube directly influences the service life and the performance of the solar water heater. The traditional solar heat collecting pipe is formed by sleeving two glass pipes, and the heat utilization rate is low.
Disclosure of Invention
【1】 Technical problem to be solved
The invention aims to provide a high-efficiency solar heat collecting pipe with good heat collecting effect and high heat utilization rate.
【2】 Technical scheme for solving problems
The invention provides a high-efficiency solar heat collecting tube which comprises a light transmitting tube 1, an end cover 2 and a heat collecting component, wherein the end part of the light transmitting tube is open, the end cover is connected with the open end of the light transmitting tube in a sealing manner, the heat collecting component is arranged in the light transmitting tube, the heat collecting component comprises a heat absorbing plate 4 and a medium tube 3, the heat absorbing plate is made of metal, the upper surface of the heat absorbing plate is plated with a heat absorbing film 41, the medium tube is attached to the lower surface of the heat absorbing plate, the medium tube is in surface contact with the heat absorbing plate, two ends of the medium tube penetrate through the end cover and then extend out of the light transmitting tube, and a vacuum area is evacuated in the light transmitting tube.
Further, the heat collection assembly further comprises a reflecting plate 5, and the reflecting plate is installed at the lower end of the medium pipe.
Furthermore, the two ends of the medium pipe are provided with circular pipe bodies 31 with circular cross sections, the end faces of the end covers are provided with holes for the circular pipe bodies to pass through, the inner walls of the holes are axially and outwards bent to form connecting portions 21, and the connecting portions are connected with the outer walls of the circular pipe bodies in a sealing mode.
Further, the end cap is made of kovar alloy.
Further, the end part of the light-transmitting tube is sealed on the inner wall and/or the outer wall of the end cover in a melting mode.
Further, the contact area between the medium pipe and the heat absorption plate is a, the total surface area of the medium pipe is b, and a/b is greater than or equal to 1/4 and less than or equal to 1/2.
Further, the medium pipe comprises a plane and an arc-shaped surface, the plane is in contact with the heat absorbing plate, and a flow channel for allowing a medium to pass is formed between the plane and the arc-shaped surface; and the cross section of the arc-shaped surface is 1/3-2/3 circles.
Further, the medium pipe comprises a first U-shaped section 301 arranged on the upper surface of the heat absorbing plate and a second U-shaped section 302 arranged on the lower surface of the heat absorbing plate and staggered with the first U-shaped section, and the first U-shaped section is communicated with the second U-shaped section.
Further, the medium pipe is made of copper, and the heat absorption plate is made of stainless steel or aluminum.
Meanwhile, the invention also provides a manufacturing method of the heat collecting pipe, which is used for producing the high-efficiency solar heat collecting pipe and comprises the following steps:
A. cleaning raw materials;
a1, deoiling, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube by using deoiling agents to remove foreign matters and oil stains on the surface;
a2, rinsing for the first time, and respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to deoiling treatment in flowing water to remove residual impurities on the surface;
a3, secondary rinsing, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to the primary rinsing in pure water;
a4, drying, namely respectively carrying out hot air drying on the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to secondary rinsing, wherein the drying temperature is less than or equal to 90 degrees;
B. coating the heat absorbing plate, and performing coating treatment on the upper surface of the heat absorbing plate by using a sputtering coating machine to form a heat absorbing film;
C. assembling the heat collecting assembly;
c1, bending the medium pipe, heating the medium pipe and bending the medium pipe into a U shape, wherein the distance between two straight pipe sections of the medium pipe is more than or equal to the width of the heat absorbing plate 1/2;
c2, fixing the medium pipe, welding the medium pipe to the heat absorbing plate through laser welding, wherein the distance between two adjacent welding points is less than or equal to 2 mm;
c3, installing a reflecting plate, and installing the reflecting plate to the lower end of the medium pipe through a bracket;
D. the heat collecting component is installed, the heat collecting component is integrally sleeved in the light transmitting pipe, and the heat collecting pipe component is prevented from contacting with the inner wall of the light transmitting pipe;
E. installing an end cover, namely placing the end cover at the open end of the light transmission pipe, and enabling a round pipe body at the end part of the medium pipe to penetrate through a hole in the end cover;
F. sealing;
f1, sealing an end cover, and sealing the end part of the light transmitting pipe to the end cover to realize sealing connection;
f2, sealing the medium tube, and realizing sealing connection of the outer wall of the round tube body of the medium tube and the inner wall of the end cover hole by brazing;
G. detecting leakage with helium mass spectrometer, and detecting leakage rate less than 2 × 10-9When Pa.m 3/s, the product is qualified; otherwise, removing the end cover and returning to the step E;
H. vacuumizing, connecting the vacuumizing hole to an air extracting device for vacuumizing, and ensuring that the vacuum degree is more than or equal to 10-3Pa。
【3】 Advantageous effects
The high-efficiency solar heat collecting pipe has the advantages of simple and compact structure, high heat utilization rate, good heat collecting effect and long service life.
Drawings
FIG. 1 is a schematic structural view of a high-efficiency solar heat collecting tube according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a left side view of the high efficiency solar thermal collector of the present invention;
FIG. 4 is a cross-sectional view of the heat collecting assembly of the high-performance solar heat collecting tube of the present invention;
fig. 5 is a schematic structural diagram of a medium tube according to a first embodiment of the high-efficiency solar heat collecting tube of the present invention;
fig. 6 is a schematic structural view of a medium tube of a second embodiment of the high-efficiency solar heat collecting tube according to the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
Referring to fig. 1 to 6, the present invention provides a high efficiency solar heat collecting tube, including a transparent tube 1, an end cap 2 and a heat collecting assembly, the transparent tube is made of glass, preferably, glass with a light transmittance of more than 87%, one end or two ends of the transparent tube are open, the end cap made of kovar alloy is hermetically connected to the open end of the transparent tube, in this embodiment, the end of the transparent tube is sealed on the inner wall and/or outer wall of the end cap, the heat collecting assembly is installed in the transparent tube, the heat collecting assembly includes a heat absorbing plate 4, a medium tube 3 and a reflecting plate 5, the heat absorbing plate is used for storing heat and transferring the heat to the medium tube, and is made of metal, in this embodiment, the heat absorbing plate is made of stainless steel or aluminum, has good heat absorbing effect and low cost, the upper surface of the heat absorbing plate is plated with a heat absorbing film 41 or a high temperature film, which faces the sun for absorbing heat generated by solar heat radiation, the medium pipe is made of copper, the medium pipe is in surface contact with the heat absorption plate, specifically, the medium pipe comprises a plane and an arc-shaped surface, the plane is in contact with the heat absorption plate, in order to make the medium fully contact with the heat absorption plate, heat-conducting silicone grease can be arranged between the plane and the heat absorption plate, the contact surface is further improved, and a flow channel for allowing the medium to pass through is formed between the plane and the arc-shaped surface; the cross section of the arc-shaped surface in the embodiment is 1/3-2/3 circles, in order to reduce cost and improve heat energy utilization rate, the contact area between the medium tube and the heat absorbing plate in the embodiment is a, the total surface area of the medium tube is b, a/b is greater than or equal to 1/4 and less than or equal to 1/2, two ends of the medium tube penetrate through the end cover and extend out of the light transmitting tube, one end of the medium tube is used for medium to enter, the other end of the medium tube is used for medium to flow out, the entering end and the flowing out end can be located at the same end of the heat collecting tube, and; specifically, the two ends of the medium pipe are provided with circular pipe bodies 31 with circular cross sections, the whole medium pipe is integrally formed, the end face of the end cover is provided with a circular hole for the circular pipe bodies to pass through, the inner walls of the hole are axially and outwards bent to form a connecting part 21, the connecting part is in brazed sealing connection with the outer walls of the circular pipe bodies, the reflecting plate is installed at the lower end of the medium pipe and used for reflecting light which is not irradiated on the heat absorbing film, the reflecting plate can be a plane or an arc surface, the reflecting direction of the reflecting plate faces the medium pipe or the heat absorbing plate, the heat energy utilization rate is improved, the light transmitting pipe is evacuated and forms a vacuum area, the heat transfer is avoided; the medium pipe can be in various structural forms; in order to avoid the contact between the heat collecting assembly and the transparent tube, the present embodiment is further provided with a bracket 6 which is made of heat insulating material and can bear certain high temperature, the bracket is used for fixing the reflecting plate, and meanwhile, the upper end and the lower end of the bracket are provided with supporting parts 61 which are in contact with the inner wall of the transparent tube; in this embodiment, the following structure of the medium pipe is exemplified;
in the first embodiment, referring to fig. 5, in the present embodiment, the whole medium pipe is U-shaped, and the distance between two straight pipe sections of the medium pipe is greater than or equal to 1/2 of the width of the heat absorbing plate;
in the second embodiment, referring to fig. 6, in this embodiment, the medium pipe includes a first U-shaped section 301 installed on the upper surface of the heat absorbing plate, and a second U-shaped section 302 installed on the lower surface of the heat absorbing plate and staggered with the first U-shaped section, and the first U-shaped section and the second U-shaped section are communicated with each other;
in the third embodiment, not shown, the medium pipe may have a serpentine shape which is bent back and forth when the diameter of the light-transmitting pipe is large.
Meanwhile, the invention also provides a manufacturing method of the heat collecting pipe, which is used for producing the high-efficiency solar heat collecting pipe and comprises the following steps:
A. cleaning raw materials;
a1, deoiling, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube by using deoiling agents to remove foreign matters and oil stains on the surface; in this step, ultrasonic cleaning is preferably employed;
a2, rinsing for the first time, and respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to deoiling treatment in flowing water to remove residual impurities on the surface;
a3, secondary rinsing, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to the primary rinsing in pure water;
a4, drying, namely respectively carrying out hot air drying on the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to secondary rinsing, wherein the drying temperature is less than or equal to 90 degrees;
B. coating the heat absorbing plate, namely performing coating treatment on the upper surface of the heat absorbing plate by using a sputtering coating machine to form a heat absorbing film or a high-temperature film; the sputtering coating is to bombard the surface of a target material by ions and the phenomenon that atoms of the target material are knocked out is called sputtering; the atoms generated by sputtering are deposited on the surface of the substrate to form a film called sputtering coating; usually, gas ionization is generated by gas discharge, positive ions of the gas ionize a cathode target body at a high speed under the action of an electric field, and atoms or molecules of the cathode target body are knocked out and fly to the surface of a plated substrate to be deposited into a thin film; at present, radio frequency sputtering, tripolar sputtering and magnetron sputtering technologies with higher sputtering rate are developed;
C. assembling the heat collecting assembly;
c1, bending the medium pipe, heating the medium pipe and bending the medium pipe into a U shape, wherein the distance between two straight pipe sections of the medium pipe is more than or equal to the width of the heat absorbing plate 1/2; this step may be performed before the washing step;
c2, fixing the medium pipe, welding the medium pipe to the heat absorbing plate through laser welding, wherein welding spots are positioned at two sides of the medium pipe, and the distance between two adjacent welding spots is less than or equal to 2 mm;
c3, installing a reflecting plate, and installing the reflecting plate to the lower end of the medium pipe through a bracket;
D. the heat collecting component is installed, the heat collecting component is integrally sleeved in the light transmitting pipe, and the heat collecting pipe component is prevented from contacting with the inner wall of the light transmitting pipe;
E. installing an end cover, namely placing the end cover at the open end of the light transmission pipe, and enabling a round pipe body at the end part of the medium pipe to penetrate through a hole in the end cover;
F. sealing;
f1, sealing an end cover, and sealing the end part of the light transmitting pipe to the end cover to realize sealing connection;
f2, sealing the medium tube, and realizing sealing connection of the outer wall of the round tube body of the medium tube and the inner wall of the end cover hole by brazing;
G. leak detection is carried out by a helium mass spectrometer leak detector and adopting a helium mass spectrometer negative pressure leak detection methodThe leakage rate is less than 2 x 10-9When Pa.m 3/s, the product is qualified; otherwise, removing the end cover and returning to the step E;
H. vacuumizing, connecting the vacuumizing hole to an air extracting device for vacuumizing, and ensuring that the vacuum degree is more than or equal to 10-3Pa。
The high-efficiency solar heat collecting pipe has the advantages of simple and compact structure, high heat utilization rate, good heat collecting effect and long service life.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A high-efficiency solar heat collecting pipe is characterized in that: including printing opacity pipe, end cover and thermal-arrest subassembly, the tip of printing opacity pipe is uncovered, end cover sealing connection be in the opening end of printing opacity pipe, the thermal-arrest subassembly is installed in the printing opacity pipe, the thermal-arrest subassembly includes absorber plate and medium pipe, the absorber plate is made by the metal, the heat-absorbing film has been plated to the upper surface of absorber plate, the medium pipe laminating is installed the lower surface of absorber plate, just the medium pipe with surface contact between the absorber plate, the both ends of medium pipe are passed extend to behind the end cover outside the printing opacity pipe, manage to find time and form the vacuum area in the printing opacity pipe.
2. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the heat collection assembly further comprises a reflecting plate, and the reflecting plate is installed at the lower end of the medium pipe.
3. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the medium tube is characterized in that circular tube bodies with circular cross sections are arranged at two ends of the medium tube, holes for the circular tube bodies to penetrate through are formed in the end faces of the end covers, the inner walls of the holes are axially and outwards bent to form connecting portions, and the connecting portions are connected with the outer walls of the circular tube bodies in a sealing mode.
4. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the end cap is made of kovar alloy.
5. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the end part of the light-transmitting tube is sealed on the inner wall and/or the outer wall of the end cover in a melting mode.
6. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the contact area between the medium pipe and the heat absorption plate is a, the total surface area of the medium pipe is b, and a/b is not less than 1/4 and not more than 1/2.
7. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the medium pipe comprises a plane and an arc-shaped surface, the plane is in contact with the heat absorbing plate, and a flow channel for allowing a medium to pass is formed between the plane and the arc-shaped surface; and the cross section of the arc-shaped surface is 1/3-2/3 circles.
8. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the medium pipe comprises a first U-shaped section and a second U-shaped section, the first U-shaped section is installed on the upper surface of the heat absorbing plate, the second U-shaped section is installed on the lower surface of the heat absorbing plate and is arranged in a staggered mode with the first U-shaped section, and the first U-shaped section is communicated with the second U-shaped section.
9. The high efficiency solar energy heat collecting tube as recited in claim 1, wherein: the medium pipe is made of copper, and the heat absorption plate is made of stainless steel or aluminum.
10. A method for manufacturing a heat collecting tube for producing a high-efficiency solar heat collecting tube as claimed in any one of claims 1 to 9, comprising the steps of:
A. cleaning raw materials;
a1, deoiling, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube by using deoiling agents to remove foreign matters and oil stains on the surface;
a2, rinsing for the first time, and respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to deoiling treatment in flowing water to remove residual impurities on the surface;
a3, secondary rinsing, namely respectively cleaning the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to the primary rinsing in pure water;
a4, drying, namely respectively carrying out hot air drying on the light transmission tube, the end cover, the heat absorption plate and the medium tube which are subjected to secondary rinsing, wherein the drying temperature is less than or equal to 90 degrees;
B. coating the heat absorbing plate, and performing coating treatment on the upper surface of the heat absorbing plate by using a sputtering coating machine to form a heat absorbing film;
C. assembling the heat collecting assembly;
c1, bending the medium pipe, heating the medium pipe and bending the medium pipe into a U shape, wherein the distance between two straight pipe sections of the medium pipe is more than or equal to the width of the heat absorbing plate 1/2;
c2, fixing the medium pipe, welding the medium pipe to the heat absorbing plate through laser welding, wherein the distance between two adjacent welding points is less than or equal to 2 mm;
c3, installing a reflecting plate, and installing the reflecting plate to the lower end of the medium pipe through a bracket;
D. the heat collecting component is installed, the heat collecting component is integrally sleeved in the light transmitting pipe, and the heat collecting pipe component is prevented from contacting with the inner wall of the light transmitting pipe;
E. installing an end cover, namely placing the end cover at the open end of the light transmission pipe, and enabling a round pipe body at the end part of the medium pipe to penetrate through a hole in the end cover;
F. sealing;
f1, sealing an end cover, and sealing the end part of the light transmitting pipe to the end cover to realize sealing connection;
f2, sealing the medium tube, and realizing sealing connection of the outer wall of the round tube body of the medium tube and the inner wall of the end cover hole by brazing;
G. detecting leakage with helium mass spectrometer, and detecting leakage rate less than 2 × 10-9When Pa.m 3/s, the product is qualified; otherwise, removing the end cover and returning to the step E;
H. vacuumizing, connecting the vacuumizing hole to an air pumping deviceVacuum pumping is carried out on the mixture, and the vacuum degree is more than or equal to 10-3Pa。
CN202010904184.XA 2020-09-01 2020-09-01 High-efficiency solar heat collecting pipe and manufacturing method thereof Pending CN111998547A (en)

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Application Number Priority Date Filing Date Title
CN202010904184.XA CN111998547A (en) 2020-09-01 2020-09-01 High-efficiency solar heat collecting pipe and manufacturing method thereof

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Publication Number Publication Date
CN111998547A true CN111998547A (en) 2020-11-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200975790Y (en) * 2006-11-03 2007-11-14 龚绪东 Oil filling type solar high-temperature heat collectors
CN201748689U (en) * 2010-08-17 2011-02-16 北京昌日新能源科技有限公司 Flat plate solar energy collector and plate core
CN202339033U (en) * 2011-11-15 2012-07-18 苏州汇思阳光科技有限公司 Solar heat collecting plate core provided with coilers and heat absorbing coatings on front and back surfaces
CN202835841U (en) * 2012-09-08 2013-03-27 余华阳 Solar thermal collector
CN106032941A (en) * 2015-03-17 2016-10-19 益科博能源科技（上海）有限公司 Vacuum heat collector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200975790Y (en) * 2006-11-03 2007-11-14 龚绪东 Oil filling type solar high-temperature heat collectors
CN201748689U (en) * 2010-08-17 2011-02-16 北京昌日新能源科技有限公司 Flat plate solar energy collector and plate core
CN202339033U (en) * 2011-11-15 2012-07-18 苏州汇思阳光科技有限公司 Solar heat collecting plate core provided with coilers and heat absorbing coatings on front and back surfaces
CN202835841U (en) * 2012-09-08 2013-03-27 余华阳 Solar thermal collector
CN106032941A (en) * 2015-03-17 2016-10-19 益科博能源科技（上海）有限公司 Vacuum heat collector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
施钰川: "《太阳能原理与技术》", 31 August 2009, 西安交通大学出版社 *

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Application publication date: 20201127