CN103091363A - Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe - Google Patents
Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe Download PDFInfo
- Publication number
- CN103091363A CN103091363A CN2013100317411A CN201310031741A CN103091363A CN 103091363 A CN103091363 A CN 103091363A CN 2013100317411 A CN2013100317411 A CN 2013100317411A CN 201310031741 A CN201310031741 A CN 201310031741A CN 103091363 A CN103091363 A CN 103091363A
- Authority
- CN
- China
- Prior art keywords
- heat
- pipe
- vacuum
- thermal collector
- heat pipe
- 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.)
- Pending
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a device for testing the heat exchange performance of a solar thermal collector interpolated with a nanometer fluid heat pipe. The testing device comprises a vacuum heat pipe, a glass vacuum pipe, a heat exchanger, a solar radiometer, an air velocity transducer and an environment thermometer, wherein the vacuum heat pipe is divided into an evaporation section and a condensation section, the evaporation section of the vacuum heat pipe is inserted into the glass-vacuum pipe, the condensation section of the vacuum heat pipe is connected with the heat exchanger, cold water is continually supplied for the condensation section of the vacuum heat pipe by a water tank, the inlet and outlet of the heat exchanger are respectively provided with a thermocouple, and the output ends of the thermocouples, the solar radiometer, the air velocity transducer and the environment thermometer are connected with a data recorder. The testing device disclosed by the invention has the advantages of simple structure, low cost and convenience in use, and can be used for testing the heat exchange performance of the solar thermal collector interpolated with the nanometer fluid heat pipe.
Description
Technical field
The present invention relates to a kind of proving installation of interpolation nanofluid heat pipe solar thermal collector heat exchange property.
Background technology
Nano-fluid is as a kind of novel augmentation of heat transfer working medium, and being mainly used in diphasic flow and heat transfer aspect, particularly gas-liquid two-phase mobile will be the effective way that increases substantially heat transfer effect.Nano material is because having small-size effect, its behavior is close to fluid molecule, with traditional conductive heat flow body or contain the fluid-phase ratio of micron order solid particle, nano-fluid has plurality of advantages: (1) nano particle has larger specific surface, it is expected to increase substantially the capacity of heat transmission and the thermal capacity of fluid, thereby reduce the energy consumption of ebullator, reduce costs, alleviate the wearing and tearing of pipeline and equipment.(2) because the nano particle yardstick is less, it gets Brownian movement in fluid media (medium) can resist the coagulation that gravity causes, thereby can keep for a long time stable suspersion.(3) because its particle diameter is less, also can be used as lubricant medium, thereby alleviate the wearing and tearing of pipeline and equipment.(4) because nano particle diameter is less, also be expected to combine and the miniature heat transmission equipment of Development of Novel with heat pipe, be applied in especially microelectronics and message area.
The solution that the research of nano-fluid is applied as some difficult problems of many high-tech areas aspects provides new method and thinking, as: (1) utilizes nano-fluid that engine is worked at the temperature of more optimizing, make less, lighter that cooling system does, thus the fuel saving consumption.(2) cooling for the guarded blade utility knife of machining, can improve the process velocity precision of workpiece, and extend cutting-tool's used life.(3) be used for power electronics industry, heat dissipation problem is operational efficiency, speed, the important restriction factor in life-span of a lot of devices such as computing machine, microelectronics, micromotor, large-size machine, transformer, integrated circuit, communication system etc., and efficient nano fluid cooling technology can play a significant role.(4) be used for the refrigerant of heating ventilation air-conditioning system and the heating agent that sun power reclaims, can greatly improve its heat exchange property, reduce volume, raise the efficiency.(5) for the manufacture of various more efficient heat interchanger, heating radiator and heat pipe heat exchanging device etc.
Under the day by day exhausted background of the disposable energy take mineral fuel as main body, the exploitation of new and renewable sources of energy are all paid special attention in countries in the world, particularly this clean and safe of sun power, enormous amount, widely distributed, develop convenient, permanent new forms of energy of time, the direct form of sun power utilization is exactly solar thermal collector.Present solar thermal collector mainly contains following shortcoming: (1) is lower in temperature, and the cloudy weather that wind is arranged can't satisfy the productive life needs; (2) impact of weather extremes can cause the destruction of its internal material, thus degradation, and system can not normally move; (3) the heat collector bearing capacity produced of domestic heat collector producer is lower, and especially after the heat collector series and parallel, between heat collector, the rubber sealing device of coupling part is the thin spot of pressure-bearing, is easy to occur aging, is not suitable for using in forced circulation.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of proving installation of simple in structure, interpolation nanofluid heat pipe solar thermal collector heat exchange property that cost is low, easy to use.
the technical scheme that the present invention solves above-mentioned technical matters is: it is characterized in that: comprise vacuum heat-pipe, glass-vacuum tube, heat interchanger, the solar radiation instrument, air velocity transducer, the environment temperature meter, described vacuum heat-pipe is divided into evaporator section and condensation segment, the evaporator section of described vacuum heat-pipe inserts in glass-vacuum tube, the condensation segment of vacuum heat-pipe is connected with heat interchanger, by water tank to the continuous feeding cold water of the condensation segment of vacuum heat-pipe, import at heat interchanger, thermopair is arranged respectively in the exit, thermopair, the solar radiation instrument, air velocity transducer, the output terminal of environment temperature meter is connected with datalogger.
Further, the different working medium such as water or nano-fluid are housed in described vacuum heat-pipe, the surface coverage of described glass-vacuum tube solar selective absorbing coating.
Further, described heat interchanger appearance bread one deck foaming rubber plastic insulation material, and be wound around one deck masking foil outside described insulation material.
Further, on the pipeline of described condensation segment and heat interchanger junction, flowmeter is set, chilled water enters from the bottom of condensation segment, and flow out on top, by the mode of convection current, the heat that condensation segment discharges is taken away.
Further, described datalogger is connected with thermopair, and the electric thermo-couple temperature logging is connected with computing machine through serial line interface by communication converter.The invention has the beneficial effects as follows:
(1) the present invention is simple in structure, cost is low, easy to use, be a kind of proving installation of the nanofluid heat pipe of interpolation preferably solar thermal collector heat exchange property.
(2) the glass-vacuum tube inserted heat pipe formula solar thermal collector take nano-fluid as working medium has lower heat loss factor and higher per day efficient, can be efficiently, operation safely and steadly, provide new approaches for further improving the solar thermal collector heat exchange property.
The invention will be further described below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
referring to Fig. 1, the present invention includes vacuum heat-pipe 1, glass-vacuum tube 3, heat interchanger 5, solar radiation instrument 9, air velocity transducer 10, environment temperature meter 11, described vacuum heat-pipe 1 is divided into evaporator section 2 and condensation segment 4, the evaporator section 2 of described vacuum heat-pipe 1 inserts in glass-vacuum tube 3, the condensation segment 4 of vacuum heat-pipe 1 is connected with heat interchanger 5, given the continuous feeding cold water of condensation segment 4 of vacuum heat-pipe 1 by water tank 13, import 6 at heat interchanger 5, export 7 places and arrange respectively thermopair 8, thermopair 8, solar radiation instrument 9, air velocity transducer 10, the output terminal of environment temperature meter 11 is connected with datalogger 12.
In described vacuum heat-pipe 1, the different working medium such as water or nano-fluid are housed, the surface coverage of described glass-vacuum tube 3 solar selective absorbing coating.
Described heat interchanger 5 appearance bread one deck foaming rubber plastic insulation material, and be wound around one deck masking foil outside described insulation material.
On the pipeline of described condensation segment 4 and heat interchanger 5 junctions, flowmeter is set, chilled water enters from the bottom of condensation segment 4, and flow out on top, by the mode of convection current, the heat that condensation segment 4 discharges is taken away.
Described datalogger is connected with thermopair, and the electric thermo-couple temperature logging is connected with computing machine through serial line interface by communication converter.
During evenly heat loss coefficient test experiments, glass heat-collecting vacuum tube and glass-vacuum tube inserted heat pipe formula thermal-collecting tube are vertically placed side by side, the openend sealing avoids direct sunlight and glass tube directly to be blown by wind.Glass heat-collecting vacuum tube first injects the hot water preheating more than 90 ℃ during take water as working medium in glass tube, then the time refill the hot water more than 90 ℃ in the 3min left and right, makes it naturally cooling.Glass-vacuum tube inserted heat pipe formula thermal-collecting tube is during take air as heat-transfer working medium, ferrule, under solar radiation, when the medial temperature of glass inner air tube is heated to more than 85 ℃, glass tube is placed in the environment of 21 ℃≤ta≤2 5 ℃, makes it naturally cooling.When the average test temperature of three points for measuring temperature in two kinds of heat pipe glass tubes of the different working medium of filling drops to 80 ℃, record data t
1, record t after 30min
2, 60min records t
3, record corresponding environment temperature ta
l, ta
2, ta
3Along with the carrying out of experiment, environment temperature remains unchanged substantially, and within half an hour, the temperature variation in the glass heat-collecting vacuum tube take water as working medium is little, and the temperature in the glass-vacuum tube inserted heat pipe formula thermal-collecting tube pipe take air as working medium underspeeds comparatively fast.This is because the former thermal capacitance is large, and the little cause of latter's thermal capacitance.Through calculating, the evenly heat loss coefficient of glass vacuum tube inserted heat pipe formula heat collector is much smaller than the evenly heat loss coefficient of all-glass vacuum thermal-collecting tube, this is mainly that characteristic due to the unidirectional heat transfer of heat pipe has reduced thermal loss, demonstrates the superiority of glass evacuated inserted heat pipe formula heat collector.
Per day efficiency test is tested and is begun to measure until 5 end experiments in afternoon continue 9 hours from 8 a.m. every day; The pitch angle since 10 ° every 5 ° of tests once, until 50 ° of end also compare experiment for fine day and cloudy day.Guarantee that two groups of external weather conditions of thermal-collecting tube experiment are identical.Variation along with the inclination angle, the per day efficiency curve of two kinds of working medium thermal-collecting tubes has identical variation tendency, and the per day efficient of the thermal-collecting tube take nano-fluid as working medium under each inclination angle all will higher than the thermal-collecting tube take water as working medium, draw two groups of heat collector optimums angle of incidence in the conclusion of 45 ° of left and right in addition.
The impact of length of the direct tested person time interval of the mensuration of momentary efficiency, momentary efficiency is when measuring, and time interval controls is between 15min-60min.During test data, the time interval is got 30min.Carrying out along with experiment, which kind of working medium no matter glass-vacuum tube inserted heat pipe formula heat collector adopt, the momentary efficiency of heat collector fluctuates with variation constantly always, and every day momentary efficiency plots changes basically consistent, always first reduce, rear increase, reduce again.In addition, nano-fluid is that always the momentary efficiency than the glass inserted heat pipe heat collector take water as working medium is high for working medium.
Claims (5)
1. the proving installation of an interpolation nanofluid heat pipe solar thermal collector heat exchange property, it is characterized in that: comprise vacuum heat-pipe (1), glass-vacuum tube (3), heat interchanger (5), solar radiation instrument (9), air velocity transducer (10), environment temperature meter (11), described vacuum heat-pipe (1) is divided into evaporator section (2) and condensation segment (4), the evaporator section (2) of described vacuum heat-pipe (1) inserts in glass-vacuum tube (3), the condensation segment (4) of vacuum heat-pipe (1) is connected with heat interchanger (5), by water tank to the continuous feeding cold water of the condensation segment (4) of vacuum heat-pipe (1), import (6) in heat interchanger (5), outlet (7) locates to arrange respectively thermopair (8), thermopair (8), solar radiation instrument (9), air velocity transducer (10), the output terminal of environment temperature meter (11) is connected with datalogger (12).
2. the proving installation of interpolation nanofluid heat pipe solar thermal collector heat exchange property according to claim 1, it is characterized in that: described vacuum heat-pipe is equipped with the different working medium such as water or nano-fluid in (1), the surface coverage of described glass-vacuum tube (3) solar selective absorbing coating.
3. the proving installation of interpolation nanofluid heat pipe solar thermal collector heat exchange property according to claim 1, it is characterized in that: described heat interchanger (5) appearance bread one deck foaming rubber plastic insulation material, and be wound around one deck masking foil outside described insulation material.
4. the proving installation of according to claim 1 or 3 described interpolation nanofluid heat pipe solar thermal collector heat exchange properties, it is characterized in that: on the pipeline of described condensation segment (4) and heat interchanger (5) junction, flowmeter is set, chilled water enters from the bottom of condensation segment (4), flow out on top, by the mode of convection current, the heat that condensation segment (4) discharges is taken away.
5. the proving installation of interpolation nanofluid heat pipe solar thermal collector heat exchange property according to claim 1, it is characterized in that: described datalogger (12) is connected with thermopair (8), and the electric thermo-couple temperature logging is connected with computing machine through serial line interface by communication converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100317411A CN103091363A (en) | 2013-01-28 | 2013-01-28 | Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100317411A CN103091363A (en) | 2013-01-28 | 2013-01-28 | Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103091363A true CN103091363A (en) | 2013-05-08 |
Family
ID=48204195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100317411A Pending CN103091363A (en) | 2013-01-28 | 2013-01-28 | Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103091363A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858763A (en) * | 2016-04-08 | 2016-08-17 | 哈尔滨工业大学 | Purifying and heating integrated device |
| CN107356628A (en) * | 2017-07-07 | 2017-11-17 | 武汉优能纳米流体技术有限公司 | A kind of nano-fluid coolant heat exchange property rapid measurement device and evaluation method |
| CN110906570A (en) * | 2019-03-14 | 2020-03-24 | 山东大学 | Loop heat pipe solar heat collector system |
| CN111272462A (en) * | 2020-04-13 | 2020-06-12 | 诸暨咯星新能源科技有限公司 | Solar water heater hollow tube pressure measuring equipment |
| CN117805011A (en) * | 2024-03-01 | 2024-04-02 | 山东龙光天旭太阳能有限公司 | Vacuum heat collecting pipe performance detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808094A (en) * | 2005-01-18 | 2006-07-26 | 黄鸣 | Apparatus and method for quick measurement of heat performance of solar heat collector |
| CN101581683A (en) * | 2009-06-29 | 2009-11-18 | 长沙理工大学 | Experimental facility of heat-transfer character of nanometer fluid vacuum heating pipe under action of magnetic field |
| CN101587025A (en) * | 2009-06-19 | 2009-11-25 | 山东力诺瑞特新能源有限公司 | Test system and test method for solar heat collector |
| CN102564783A (en) * | 2011-12-17 | 2012-07-11 | 中国科学院电工研究所 | Thermal performance test system of solar water heater |
| CN203101300U (en) * | 2013-01-28 | 2013-07-31 | 长沙理工大学 | Testing device for heat exchange performance of solar thermal collector with internally inserted nanometer fluid heat pipes |
-
2013
- 2013-01-28 CN CN2013100317411A patent/CN103091363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808094A (en) * | 2005-01-18 | 2006-07-26 | 黄鸣 | Apparatus and method for quick measurement of heat performance of solar heat collector |
| CN101587025A (en) * | 2009-06-19 | 2009-11-25 | 山东力诺瑞特新能源有限公司 | Test system and test method for solar heat collector |
| CN101581683A (en) * | 2009-06-29 | 2009-11-18 | 长沙理工大学 | Experimental facility of heat-transfer character of nanometer fluid vacuum heating pipe under action of magnetic field |
| CN102564783A (en) * | 2011-12-17 | 2012-07-11 | 中国科学院电工研究所 | Thermal performance test system of solar water heater |
| CN203101300U (en) * | 2013-01-28 | 2013-07-31 | 长沙理工大学 | Testing device for heat exchange performance of solar thermal collector with internally inserted nanometer fluid heat pipes |
Non-Patent Citations (1)
| Title |
|---|
| 张英才: "纳米流体热管太阳能集热装置换热性能的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858763A (en) * | 2016-04-08 | 2016-08-17 | 哈尔滨工业大学 | Purifying and heating integrated device |
| CN107356628A (en) * | 2017-07-07 | 2017-11-17 | 武汉优能纳米流体技术有限公司 | A kind of nano-fluid coolant heat exchange property rapid measurement device and evaluation method |
| CN107356628B (en) * | 2017-07-07 | 2020-10-20 | 武汉优能纳米流体技术有限公司 | Rapid measurement device and evaluation method for heat exchange performance of nano fluid cooling liquid |
| CN110906570A (en) * | 2019-03-14 | 2020-03-24 | 山东大学 | Loop heat pipe solar heat collector system |
| CN110906570B (en) * | 2019-03-14 | 2021-06-25 | 山东大学 | Loop heat pipe solar heat collector system |
| CN111272462A (en) * | 2020-04-13 | 2020-06-12 | 诸暨咯星新能源科技有限公司 | Solar water heater hollow tube pressure measuring equipment |
| CN117805011A (en) * | 2024-03-01 | 2024-04-02 | 山东龙光天旭太阳能有限公司 | Vacuum heat collecting pipe performance detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Esfe et al. | Application of nanofluids and fluids in photovoltaic thermal system: An updated review | |
| Cui et al. | Current status and future development of hybrid PV/T system with PCM module: 4E (energy, exergy, economic and environmental) assessments | |
| Nižetić et al. | Implementation of phase change materials for thermal regulation of photovoltaic thermal systems: Comprehensive analysis of design approaches | |
| Su et al. | Maximizing the energy output of a photovoltaic–thermal solar collector incorporating phase change materials | |
| Praveenkumar et al. | Thermo-enviro-economic analysis of solar photovoltaic/thermal system incorporated with u-shaped grid copper pipe, thermal electric generators and nanofluids: An experimental investigation | |
| Fu et al. | Performance improvement of a PVT system using a multilayer structural heat exchanger with PCMs | |
| Cuce et al. | On the use of nanofluids in solar energy applications | |
| Alsaqoor et al. | The impact of phase change material on photovoltaic thermal (PVT) systems: A numerical study | |
| CN103091363A (en) | Device for testing heat exchange performance of solar thermal collector interpolated with nanometer fluid heat pipe | |
| Alktranee et al. | Effect of zirconium oxide nanofluid on the behaviour of photovoltaic–thermal system: An experimental study | |
| Wang et al. | Performance of an air-cooled photovoltaic/thermal system using micro heat pipe array | |
| CN105605956A (en) | High-temperature air and fused salt efficient heat storage system | |
| CN102487255A (en) | Solar energy comprehensive utilization apparatus | |
| Kalbande et al. | Advancements in thermal energy storage system by applications of Nanofluid based solar collector: A review | |
| Ahmadlou et al. | Experimental investigation of PV/T and thermoelectric systems using CNT/water nanofluids | |
| Khodadadi et al. | Assessment of photovoltaic thermal unit equipped with phase change material in different finned containers | |
| Li et al. | Economic cost and technical efficiency analysis of thermal management of a triple pack of lithium-ion battery with forced airflow and nano-phase change materials | |
| CN106788237B (en) | A kind of Novel photo modification high-efficiency photovoltaic system | |
| CN203101300U (en) | Testing device for heat exchange performance of solar thermal collector with internally inserted nanometer fluid heat pipes | |
| Yao et al. | Comparison study on two LT-PV/T systems with different tubular condensers | |
| Abdelrazik et al. | ANSYS-Fluent numerical modeling of the solar thermal and hybrid photovoltaic-based solar harvesting systems | |
| CN2602316Y (en) | Solar energy and geothermal energy complementary type accumulation of energy apparatus | |
| Liu et al. | Research Progress of Photovoltaic Cooling Systems Based on Phase Change Materials: An Overview | |
| CN103363509A (en) | Photoelectric hybrid power solar energy steam generator | |
| Kumar et al. | Enhanced energy transport in high-mass flow solar parabolic trough collectors using Fe2O3-laden nanofluids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |