CN101650092A - Thermal-collecting tube and solar thermal collector and solar water heater using same - Google Patents
Thermal-collecting tube and solar thermal collector and solar water heater using same Download PDFInfo
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- CN101650092A CN101650092A CN200910184183A CN200910184183A CN101650092A CN 101650092 A CN101650092 A CN 101650092A CN 200910184183 A CN200910184183 A CN 200910184183A CN 200910184183 A CN200910184183 A CN 200910184183A CN 101650092 A CN101650092 A CN 101650092A
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- 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
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Abstract
The invention provides a thermal-collecting tube capable of bearing pressure, the price of which is lower than that of a thermotube thermal-collecting tube and a U-tube thermal-collecting tube, and asolar thermal collector and a solar water heater using the same. The thermal-collecting tube comprises a glass vacuum tube and a metal thermal conductor extending into an inner tube of the glass vacuum tube, wherein the metal thermal conductor has a front cavity and a back cavity, and the front cavity and the back cavity are communicated on the bottom. The glass vacuum tube converts solar energy into heat energy after absorbing the solar energy; the heat energy passes through the inner wall of the inner tube of the glass vacuum tube and is transferred to water in the front cavity and the backcavity through the metal thermal conductor; the water in the front cavity floats after being heated and then enters the internal bladder of a water tank connected with the front cavity; cold water enters the back cavity from the internal bladder of the water tank and then enters the front cavity from the bottom; the chimney effect of natural convection formed by a medium in the front cavity and the back cavity enables the efficiency of the natural convection to be greatly improved.
Description
Technical field
The solar thermal collector and the solar water heater that the present invention relates to a kind of thermal-collecting tube and constitute by this thermal-collecting tube.
Background technology
Existing vacuum heat collection pipe mainly contains all-glass vacuum thermal-collecting tube, adopts direct insertion installation, and advantage is that cost is low, and shortcoming is a pressure-bearing not; Communicate with water tank in the pipe in it, interior pipe is leaked water, easily fouling; The easy bombing of water on when high temperature; Leak after the breakage.And the thermal-collecting tube of energy pressure-bearing mainly contains heat collector tube pipe and U type pipe thermal-collecting tube, and advantage is a pressure-bearing, and shortcoming is the cost height, adopts the aluminium fin to conduct heat between glass-vacuum tube and heat pipe and the U type pipe, and gapped between the two, heat transfer resistance is big.
Summary of the invention
The purpose of this invention is to provide a kind of energy pressure-bearing, price again than heat pipe thermal-collecting tube and the low thermal-collecting tube of U type pipe thermal-collecting tube.
This thermal-collecting tube comprises glass-vacuum tube and metal heat-conducting device, and the metal heat-conducting device extend in the interior pipe of glass-vacuum tube; Two chambeies before and after the metal heat-conducting device has, the chamber, front and back communicates in the bottom.
Its operation principle is: because the metal heat-conducting device has two chambeies, front and back, two chambeies communicate in the bottom.When vacuum tube was tiltedly put, ante-chamber made progress and towards the sun, back cavity is downward.When vacuum tube kept flat, ante-chamber made progress, and back cavity is downward.This structure extremely helps the free convection of water (or medium).Specifically, glass-vacuum tube changes heat energy into after absorbing solar energy, heat energy is passed to the metal heat-conducting device by the inwall of pipe in the glass-vacuum tube, pass to water or other medium in chamber before and after it by the metal heat-conducting device again, come-up entered coupled medium memory unit (as the inner bag of water tank) after the interior water of metal heat-conducting device ante-chamber or other medium were heated, cold water or other medium enter back cavity by the medium memory unit, enter ante-chamber from the bottom again, medium forms the stack effect of free convection in the chamber, front and back, the efficient of free convection is improved greatly.
The beneficial effect of this thermal-collecting tube:
1, water or the free convection in two chambeies, front and back of other medium in the metal heat-conducting device forms stack effect, and the efficient of free convection is improved greatly;
2, walk medium in the metal heat-conducting device, the energy pressure-bearing;
3, do not walk medium, non-scaling in the glass-vacuum tube;
4, long service life;
Even 5 when glass-vacuum tube high temperature on water, glass-vacuum tube can bombing yet;
6, do not leak water in the glass-vacuum tube, water-tight after the glass-vacuum tube breakage.
As the further improvement to above-mentioned thermal-collecting tube, metal heat-conducting device outer wall has fin, and metal heat-conducting device and fin are an integral body; Fin contacts with inner tube wall.With heat transferred metal heat-conducting device, the existence of fin has increased heat conduction efficiency to the inwall of pipe by fin in the glass-vacuum tube.
As the further improvement to above-mentioned thermal-collecting tube, the metal heat-conducting device uses aluminium, because the aluminium low price, and be convenient to moulding.
As further improvement, be provided with in the metal heat-conducting device along the axially extended dividing plate that is used to separate the chamber, front and back of glass-vacuum tube to above-mentioned thermal-collecting tube.
The present invention provides a kind of solar thermal collector that adopts above-mentioned thermal-collecting tube simultaneously, and it comprises a plurality of above-mentioned thermal-collecting tubes, and the metal heat-conducting device in each thermal-collecting tube also is connected on the collector, and the chamber, front and back of metal heat-conducting device all communicates with collector.When this solar thermal collector used on solar water heater, the two ends of collector communicated with the water tank of solar water heater respectively.Water in the metal heat-conducting device through collector again with solar water heater water tank in the water circulation, thereby the water in the heating water tank.Water circulation in solar thermal collector and the water tank can be a Natural Circulation, also can be forced circulation.Because this solar thermal collector can pressure-bearing, outward appearance is beautiful, is fit to make the solar water heater of balcony formula, wall-hanging and pitched roof formula etc. and building perfect adaptation.
As the further improvement to above-mentioned solar thermal collector, the metal heat-conducting device in each thermal-collecting tube becomes removable seal to be connected (as being threaded) with collector.The metal heat-conducting device can be disassembled from collector like this, be convenient to the clean metal pipe, also be convenient to packing and transportation.
As the further improvement to above-mentioned solar thermal collector, it comprises that also inside is provided with the header of heat-insulation layer, and collector passes the heat-insulation layer in the header.
The present invention provides a kind of solar water heater that adopts above-mentioned solar energy heat collection pipe simultaneously, and it comprises water tank and a plurality of above-mentioned thermal-collecting tube, and the metal heat-conducting device in each thermal-collecting tube also is connected on the inner water tank, and the chamber, front and back of metal heat-conducting device communicates with inner water tank.When glass-vacuum tube absorption solar energy becomes heat energy, heat energy is passed to water or other medium by the metal heat-conducting device, come-up entered inner bag after the interior water of ante-chamber was heated, cold water enters back cavity by inner bag, enter ante-chamber from the bottom again, form the stack effect of free convection, the efficient of free convection is improved greatly, thus the water in the heating water tank.
As the further improvement to above-mentioned solar water heater, the metal heat-conducting device in each thermal-collecting tube becomes removable seal to be connected (as being threaded) with inner water tank.
Description of drawings
Fig. 1 is the thermal-collecting tube schematic diagram of solar energy.
Fig. 2 is the cross section enlarged drawing of the thermal-collecting tube among Fig. 1.
Fig. 3 is the schematic diagram of solar thermal collector.
Fig. 4 is the schematic diagram of solar water heater.
The specific embodiment
Embodiment 1: thermal-collecting tube
Referring to the thermal-collecting tube 10 of Fig. 1 and Fig. 2, metal heat-conducting device 4 is placed in the interior pipe of glass-vacuum tube 1, is provided with in the metal heat-conducting device 4 along the axially extended dividing plate 11 of glass-vacuum tube.The dividing plate both sides link to each other with the inwall of metal heat-conducting device respectively, so that the inner chamber of metal heat-conducting device is separated ante-chamber 2 and back cavity 5, the gap 12 that is positioned at metal heat-conducting device bottom is arranged between the inwall of the lower end of dividing plate 11 and metal heat-conducting device, and ante-chamber 2 communicates by gap 12 with back cavity 5.Metal heat-conducting device 4 peripheries have fin 3, and metal heat-conducting device 4 and fin 3 are an integral body.Fin 3 contacts with the interior pipe of glass-vacuum tube 1.
Embodiment 2: solar thermal collector
Referring to the solar thermal collector of Fig. 3, it comprises a plurality of embodiment 1 described thermal-collecting tubes 10, and the metal heat-conducting device 4 in each thermal-collecting tube 10 is by screw thread and be connected on the sidewall of collector 6.The ante-chamber 2 of metal heat-conducting device on top, back cavity 5 is in the bottom, and all communicate with collector.Header 8 inside are provided with heat-insulation layer 7 collectors 6 and pass heat-insulation layer 7 in the header 8.The collector two ends are connected with water inlet pipe (not shown) and outlet pipe (not shown) respectively.
Embodiment 3: solar water heater
Referring to the solar water heater of Fig. 4, it comprises a plurality of embodiment 1 described thermal-collecting tube 10 and water tanks, and the metal heat-conducting device 4 in each thermal-collecting tube also is connected on the inner water tank 9, and the metal heat-conducting device becomes removable seal to be connected (as being threaded) with inner water tank.The ante-chamber 2 of metal heat-conducting device 4 on top, back cavity 5 is in the bottom, and all communicate with inner water tank.
When glass-vacuum tube absorption solar energy becomes heat energy, the water of heat energy in fin 3, metal heat-conducting device 4 are passed to metal heat-conducting device inner chamber, come-up entered inner water tank 9 after metal heat-conducting device ante-chamber 2 interior water were heated, cold water enters metal heat-conducting device back cavity 5 by inner water tank 9, bottom from the metal heat-conducting device enters ante-chamber again, form the stack effect of free convection, the efficient of free convection is improved greatly, thus the water in the heating water tank.
Claims (9)
1. thermal-collecting tube comprises glass-vacuum tube and extend into metal heat-conducting device in the interior pipe in glass-vacuum tube that it is characterized in that: two chambeies before and after the metal heat-conducting device has, the chamber, front and back communicates in the bottom.
2. thermal-collecting tube according to claim 1 is characterized in that: metal heat-conducting device outer wall has fin, and metal heat-conducting device and fin are an integral body; Fin contacts with inner tube wall.
3. thermal-collecting tube according to claim 1 and 2 is characterized in that: the metal heat-conducting device is the metal heat-conducting device of aluminium material.
4. thermal-collecting tube according to claim 1 and 2 is characterized in that: be provided with in the metal heat-conducting device along the axially extended dividing plate that is used to separate the chamber, front and back of glass-vacuum tube.
5. solar thermal collector, it is characterized in that: it comprises the described thermal-collecting tube of a plurality of claims 1, and the metal heat-conducting device in each thermal-collecting tube also is connected on the collector, and the chamber, front and back of metal heat-conducting device all communicates with collector.
6. solar thermal collector according to claim 5 is characterized in that: the metal heat-conducting device in each thermal-collecting tube becomes removable seal to be connected with collector.
7. solar thermal collector according to claim 5 it is characterized in that: further comprising the header that inside is provided with heat-insulation layer, and collector passes the heat-insulation layer in the header.
8. solar water heater, it is characterized in that: it comprises water tank and the described thermal-collecting tube of a plurality of claim 1, and the metal heat-conducting device in each thermal-collecting tube also is connected on the inner water tank, and the chamber, front and back of metal heat-conducting device all communicates with inner water tank.
9. solar water heater according to claim 8 is characterized in that: the metal heat-conducting device in each thermal-collecting tube becomes removable seal to be connected with inner water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184183A CN101650092A (en) | 2009-08-21 | 2009-08-21 | Thermal-collecting tube and solar thermal collector and solar water heater using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910184183A CN101650092A (en) | 2009-08-21 | 2009-08-21 | Thermal-collecting tube and solar thermal collector and solar water heater using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101650092A true CN101650092A (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910184183A Pending CN101650092A (en) | 2009-08-21 | 2009-08-21 | Thermal-collecting tube and solar thermal collector and solar water heater using same |
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| CN (1) | CN101650092A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673344A (en) * | 2012-08-31 | 2014-03-26 | 益科博能源科技（上海）有限公司 | U-shaped multi-tube type evacuated collector tube |
| CN104406445A (en) * | 2014-11-24 | 2015-03-11 | 无锡鸿声铝业有限公司 | Aluminum finned tube heat exchanger |
| CN107166753A (en) * | 2017-07-06 | 2017-09-15 | 常毅 | A kind of groove type solar vacuum heat collection pipe with inserted rod |
| CN111981251A (en) * | 2020-08-25 | 2020-11-24 | 六安中财管道科技有限公司 | Heat-preservation integrated solar special pipe and processing technology |
-
2009
- 2009-08-21 CN CN200910184183A patent/CN101650092A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673344A (en) * | 2012-08-31 | 2014-03-26 | 益科博能源科技（上海）有限公司 | U-shaped multi-tube type evacuated collector tube |
| CN103673344B (en) * | 2012-08-31 | 2017-07-25 | 益科博能源科技（上海）有限公司 | U-shaped multitube vacuum heat collection pipe |
| CN104406445A (en) * | 2014-11-24 | 2015-03-11 | 无锡鸿声铝业有限公司 | Aluminum finned tube heat exchanger |
| CN107166753A (en) * | 2017-07-06 | 2017-09-15 | 常毅 | A kind of groove type solar vacuum heat collection pipe with inserted rod |
| CN107166753B (en) * | 2017-07-06 | 2023-07-18 | 常毅 | Groove type solar vacuum heat collecting tube with inner inserting rod |
| CN111981251A (en) * | 2020-08-25 | 2020-11-24 | 六安中财管道科技有限公司 | Heat-preservation integrated solar special pipe and processing technology |
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Application publication date: 20100217 |