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Views: 8 Author: Site Editor Publish Time: 2019-09-24 Origin: Site
Most people are familiar with solar water heaters, what about heat pipe solar collectors? It may not be clear, people who know will know that heat pipe solar collectors are the core part of solar water heaters. Researchers want to improve the performance of solar water heaters, starting with heat pipe solar collectors. The process in the middle can be said to be very complicated. Would you like to know about this process? This article will explain to you.
The following steps:
Measuring relevant data
Main production method
Check if it is finished
Common problems
Conclusion
A. Solar radiation
a) Number of channels: standard 2 channels (total radiation, scattered radiation)
b) Measurement range: 0~2000W/m2
c) Measurement accuracy: <5%
d) Display resolution: 1 W/m2
e) Display content: instantaneous value, daily cumulative amount, etc.
B. Temperature (tank temperature or collector temperature)
a) Number of channels: 4 channels
b) Measurement range 0～100°C
c) Measurement accuracy: ±0.1 °C
d) Display resolution: 0.1 ° C
C. Ambient temperature
a) Number of channels: 1 way
b) Measurement range -40 to 80 ° C
c) Measurement accuracy: ±0.1 °C
d) Display resolution: 0.1 ° C, stainless steel package, ¢ 4 * 40mm, fully sealed, anti-corrosion, waterproof, with radiation protection hood
D. Ambient wind speed
a) Number of channels: 1 way
b) Measurement range: 0 ~ 70m / s
c) Measurement accuracy: ±0.5m/s
d) Display resolution: 0.1 m/s
E. Pipe flow rate Flow meter
a) Number of channels: 1 way
b) Measurement range: 0.01 ~ 0.25 (m3 / h)
c) Measurement accuracy: <0.5% working pressure: 25MP
d) Water resistance temperature: 0 to 120 degrees
Line pressure line pressure sensor, 2 way, used for pressure drop test,
Pressure range: 0 ~ 0.1MPA,
Accuracy: <50PA
Water resistance temperature: 0 to 120 degrees
Product operating environment
1. Ambient temperature: -40 ° C ~ 60 ° C
2. Relative humidity: ≤90%
3. Applicable power supply: 220V (±10%), 50Hz (±2%)
A heat pipe solar collector production method. Firstly, the production materials are prepared according to the set size: the back plate and the back plate need to be stamped and formed at one time; the heat insulating layer and the heat insulating layer are made of polyurethane one-time high-pressure foaming; the heat collecting layer, the heat collecting layer is flowed and collected by the copper tube; The film copper tube is laser welded; the tempered glass, the tempered glass and the back plate joint are covered with rubber; assembly: the back plate, the heat insulating layer, the heat collecting layer and the tempered glass are superposed from bottom to top, and then passed through the side The strip buckle locks the back sheet and the tempered glass in one shot. The method of the invention greatly increases the heat collecting effect and the heat preservation effect of the product, reduces the safety hazard caused by the multiple connection, and greatly improves the safety factor, and uses the side strip buckle to punch and lock, is firm and easy to install.
The heat pipe solar collectors includes a heat collecting plate and a support frame. The heat collecting plate is provided with a plurality of heat collecting tubes, the collecting frame is provided with a heat collecting plate, and the collecting plate is provided with tempered glass, and the tempered glass is to be in the same size as the heat collecting plate. Anastomosis, a concentrating plate is arranged under the heat collecting plate, a groove is arranged on the supporting frame, a slider is arranged in the groove, the slider needs to be matched with the groove, and the sliding block is connected with the tempered glass. The purpose of such design is that the tempered glass is shielded by the tempered glass, the tempered glass is moved by the slider, the slider is restricted by the groove, and the illuminating area of the heat collecting plate is improved by the concentrating plate.
Preferably, the concentrating plate comprises a plurality of arc concentrating mirrors, the arc concentrating mirror is disposed under the heat collecting tube, and a gap is left between the arc concentrating mirror and the outer tube of the heat collecting tube, and the purpose is that the two collecting tubes are arranged by the arc concentrating mirror The missing sunlight is refracted onto the heat collecting tube, and the solar energy conversion efficiency of the heat collecting tube is ensured by increasing the illumination area of the heat collecting tube. A further technical solution is that the upper end of the arc concentrating mirror is provided with a fixing strip, the fixing strip is trapezoidal, and the two adjacent arc concentrating mirrors are fixed by the fixing strip, the purpose of which is to ensure the connection between adjacent circular concentrating mirrors by the fixing strips. Stable.
Optimized again, the above-mentioned support frame is further equipped with a fan, and the angle between the wind direction blown by the fan and the heat collecting plate is 90-180 degrees, and the purpose is that the air and dust above the heat collecting plate are driven by the fan to prevent dust. Stacked on the collector plate and tempered glass.
A further improvement of the technical solution: the upper end of the fan is provided with a photovoltaic panel, the photovoltaic panel is provided with a battery on one side, the photovoltaic panel is electrically connected with the battery, and the battery is electrically connected with the fan. In order to achieve storage of electricity by the photovoltaic panel, the battery supplies power to the fan. The function of supply.
To check if the heat pipe solar collectors passes, the following tests are required. Internal pressure test, high temperature test, exposure test, external and internal thermal shock test, rainwater penetration test, freeze resistance test, mechanical load test, impact resistance test, thermal performance test. If all passes, it is a qualified heat pipe solar collectors.
The use of heat pipe solar collectors requires the following safety knowledge
1) The installed heat pipe solar collector cannot be moved casually, otherwise it will cause various faults.
2) Water should be filled immediately when the water heater is used up. When not in use for a long time, check whether it is firmly fixed to prevent the wind from blowing down.
3) When there is sunlight, the vacuum water heater water tank should be full of water, do not have sunshine fashion water, so as not to damage the vacuum tube.
4) If the exhaust pipe is frozen in the winter, it is forbidden to install water or water to avoid damaging the water tank.
5) When the hot water pressure is higher than the tap water and the tap water pipe is hot, the water limit switch should be heated in the basin bath or on the upper and lower water pipes.
6) When used in conjunction with other water heaters, it should be used strictly according to other water heater instructions and precautions to ensure safe use.
With its rich, clean and cheap advantages, solar energy has become the most promising energy source. In the development and utilization of solar energy, researchers have put a lot of effort into this work. This article briefly introduces some of this complex project. Now many researchers are working hard to study heat pipe solar collectors with higher performance. We can look forward to the future. There are better and more convenient solar tools for us to use. Or do you also pay for this work?
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