Low-cost intelligent anti-overheating plastic panel solar thermal collector
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A flat-panel solar energy and anti-overheating technology, applied in the field of solar energy, can solve problems such as shortening the service life of collectors, complex maintenance of the system, overheating of the collector system, etc., and achieve the effects of lowering temperature, reducing costs, and high safety
Active Publication Date: 2013-07-31
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
These use of external force to "antifreeze" the water pipeline has become an indispensable auxiliary configuration for flat-panel solar water heaters at this stage, but on the one hand, this has caused the complexity of the system and the difficulty of maintenance, and on the other hand, more importantly, it has caused costs. further increase of
In the hot summer, if the current flat plate collector structure encounters a water cut-off, the collector will be in an empty state, resulting in overheating of the collector system, damage to some parts, and a serious shortening of the heat collection performance. service life of the device
Method used
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Embodiment 1
[0035] Example 1: Low-cost plastic flat panel solar collector with all-plastic intelligence to prevent overheating
[0036] The specific structure of the flat solar heat collector of the present embodiment is shown in the appendix figure 1 .
[0037] The top layer is a polycarbonate (PC) cover plate with a thickness of 3mm;
[0038] Use transparent glue to stick a layer of transparent glass beads on the lower surface of the cover plate as a spacer for the hollow layer between the glass cover plate and the heat-absorbing plate core. The diameter of the glass beads is 2mm;
[0039] The lower layer of the hollow layer is the heat-absorbing plate core, and its substrate material is Teflon with a working temperature of -196 degrees to 300 degrees, and the thickness is 40mm;
[0040] The upper surface of the plastic substrate is coated with a solar selective absorption coating composed of a metal copper film and a TiAlN absorption film, the absorption rate is greater than 96%, and...
Embodiment 2
[0048] Embodiment 2: A low-cost intelligent anti-overheating plastic flat solar collector with a glass cover plate and an aluminum alloy frame.
[0049] The specific structure of the flat solar heat collector of the present embodiment is shown in the appendix figure 1 .
[0050] The top layer is a tempered glass cover with a thickness of 5mm;
[0051] Use transparent glue to stick a layer of transparent glass beads on the lower surface of the glass cover plate as the spacer between the glass cover plate and the hollow layer of the heat-absorbing plate core. The diameter of the glass beads is 1mm;
[0052] The lower layer of the hollow layer is a heat-absorbing plate core, and its substrate material is a PPS base material modified high-temperature-resistant heat-conducting plastic that can be used for a long time at 200-240°C, and its thermal conductivity is 5W / (m·K) -1 , the thickness is 50mm;
[0053] Metal copper film and TiN are plated on the upper surface of the plastic...
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Abstract
The invention discloses a low-cost intelligent anti-overheating plastic panel solar thermal collector. The low-cost intelligent anti-overheating plastic panel solar thermal collector is characterized in that a thermal collecting plate and a water pipe are used together to form the integral thermal-stable heat-conduction plastic base plate, which is used to replace the metal base plate and the metal pipe that are used in the conventional panel thermal collector; not only is the cost and weight of the thermal collector reduced, but also the contact area between the heat-absorption plate core and the working liquid medium is increased; meanwhile, plastic has a good tensile property, and is free from problem of pipe rupture in summer or winter, so that the safety factor of the thermal collector is increased; more importantly, a hollow design is adopted by the thermal collector between the transparent cover body and the heat-absorption plate core for achieving intelligent vacuumizing or inflation; vacuumizing can remarkably reduce thermal loss on the surface of the thermal collector to increase thermal collecting efficiency; and inflation can quickly reduce the temperature of the thermal collector, so as to prevent damage or even destruction caused by thermal collector working without water due to sudden cut-off in water supply, and the function can be achieved through setting the use temperature range, so that the functions of intelligent adjustment and automatic protection are achieved.
Description
technical field [0001] The invention relates to a flat-plate solar heat collector, specifically a low-cost, light-weight plastic flat-plate solar heat collector that can be intelligently adjusted, refrigerated, and prevented from being damaged by overheating in the air, and belongs to the technical field of solar energy. Background technique [0002] As we all know, the energy problem is one of the most prominent problems facing the world today, and solar energy is an inexhaustible clean energy. Solar heat conversion is the most popular and main form of solar energy utilization in the world, and the most representative one is solar water heater. my country has become the country that produces the most solar water heaters in the world, and also has the world's largest solar water heater market. [0003] The solar collectors that have been widely used mainly include vacuum tube solar collectors and flat plate solar collectors. Among them, vacuum tube solar collectors still ac...
Claims
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Application Information
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