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A technology of vacuum tubes and solar energy, applied in solar thermal energy, solar collectors, solar heating systems, etc., can solve the problems of low absorption rate and short service life, and achieve the effects of increased absorption rate, improved service life, and improved performance
Inactive Publication Date: 2019-02-22
JIANGSU JINGZHAN ENERGY TECH CO LTD
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Problems solved by technology
[0003] The solar vacuum tubes in the prior art have the problems of low absorption rate and short service life due to frequent alternate use of cold and heat
Method used
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Embodiment 1
[0022] The raw material that is used to make composite absorbent layer in the present embodiment is as follows:
[0023] 40 parts vinyl resin;
[0024] 10 parts of aluminum silver powder (average particle size ≤ 50nm);
[0025] 20 parts isopropanol;
[0026] 1 part of mono-tert-butyl-p-cresol;
[0027] 1 part of aluminate coupling agent;
[0028] 1 part sodium dodecylbenzenesulfonate.
Embodiment 2
[0030] The raw material that is used to make composite absorbent layer in the present embodiment is as follows:
[0031] 55 parts of furfuryl alcohol modified urea-formaldehyde resins;
[0032] 15 parts of aluminum silver powder (average particle size ≤ 50nm);
[0033] 30 parts of butyl carbitol;
[0034] 3 parts pentaerythritol ester;
[0035] 3 parts of aluminate coupling agent;
[0036] 3 parts sodium dodecylbenzenesulfonate.
Embodiment 3
[0038] The raw material that is used to make composite absorbent layer in the present embodiment is as follows:
[0039] 42 parts vinyl resin;
[0040] 11 parts of aluminum silver powder (average particle size ≤ 50nm);
[0041] 23 parts of cyclohexanone;
[0042] 1 part of mono-tert-butyl-p-cresol;
[0043] 2 parts of aluminate coupling agent;
[0044] 1 part sodium dodecylbenzenesulfonate.
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Abstract
The invention discloses a solar vacuum pipe. The solar vacuum pipe comprises an outer glass pipe and an inner glass pipe, wherein the outer glass pipe and the inner glass pipe are concentric circularpipes; the nozzle part of the outer glass pipe and the nozzle part of the inner glass pipe are connected through a molten glass pipe; the tail part of the inner glass pipe is fixed on the outer glasspipe, and a vacuum interlayer is reserved between the inner glass pipe and the outer glass pipe; the outer surface of the inner glass pipe is coated with a compound absorption layer; the compound absorption layer is prepared from the following raw materials in parts by weight: 40-55 parts of resin, 10-15 parts of aluminum silver powder, 20-30 parts of solvent, 1-3 parts of antioxidant, 1-3 parts of a coupling agent and 1-3 parts of dispersant; and the resin is vinyl resin or furfuryl alcohol modified urea resin. The solar vacuum pipe has relatively remarkable solar absorption rate and cold-hotimpact resistance, is low in preparation cost, and is suitable for popularizing.
Description
technical field [0001] The invention belongs to the field of solar vacuum tube preparation, and in particular relates to a solar vacuum tube. Background technique [0002] At present, my country is the country with the largest production and usage of solar water heaters in the world. The huge market capacity provides logical support for the development of the entire industry, but China's solar water heater industry has many problems such as uneven market players, imperfect industry technical standards, and weak enterprise technology research and development capabilities. uncertainties in the process. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structure. Vacuum tube solar water heaters are the main ones, accounting for about 95% of the domestic market share. The solar vacuum tube is the core component of the vacuum tube solar water heater, and is known as the "heart" of the solar water heater. T...
Claims
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Application Information
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