Through-type solar vacuum heat collecting tube
A technology of vacuum heat collecting tube and solar energy, which is applied in the field of middle and high temperature utilization of solar energy vacuum heat collecting tube and pass-through solar vacuum heat collecting tube, can solve the problems of inability to use high temperature in a concentrated manner, low heat exchange efficiency of heat transfer medium, etc., so as to improve cold and heat Convective circulation efficiency, long service life, and the effect of improving heat transfer efficiency
Inactive Publication Date: 2012-09-12
崔建伟
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Problems solved by technology
However, the existing solar medium and high temperature vacuum collectors using heat transfer medium all use solar vacuum tubes with one end open, and all circulation channels are arranged at one end of the solar vacuum tubes. The biggest drawback of this structure is: different heat transfer The heat medium enters and exits from the same end of the vacuum tube. Because there is no split flow, the heat transfer efficiency of the heat transfer medium is low, and it cannot be used in a centralized manner, which is the key bottleneck affecting the high temperature utilization of solar vacuum tubes.
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[0025] figure 1 Give the specific structural application example of the through-type solar vacuum heat collecting tube 2, the through-type solar vacuum heat collecting tube 2 is a vacuum heat collecting tube with openings at both ends, and a metal sleeve 2-4 with a coaxial built-in metal volume reducing rod 2-3 The heat transfer medium communicates with the upper and lower heat collecting boxes 3 and 4 in the metal casing 2-4 and circulates, and the metal casing is provided with a supporting ring 2-1 to fix the capacity reducing rod 2-3. The volume reducing rod is in the metal casing, forming an annular channel, increasing the contact area between the heat transfer medium and the heat source, and improving the heat exchange efficiency between the heat transfer medium and the vacuum heat collecting tube.
[0026] The heat conduction paste 2-6 is filled between the through-type solar vacuum heat collecting tube 2 and the metal casing 2-4. It is used to improve the heat conducti...
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The invention provides a through-type solar vacuum heat collecting tube which is composed of a vacuum heat collecting tube with two open ends and a metal sleeve of a coaxial built-in metal volume-reduction bar; the metal sleeve is provided with a support ring fixed volume-reduction bar; and heat conduction paste is filled between the through-type solar vacuum heat collecting tube and the metal sleeve. According to the invention, the hot and cold convective circulation efficiency of the solar vacuum tube is improved greatly, and a plurality of groups of vacuum heat collecting tubes can be connected in series for centralized utilization, thus possibility is created for medium-temperature and high-temperature solar energy application industrially.
Description
technical field [0001] The invention relates to a through-type solar vacuum heat collecting tube, in particular to a medium and high temperature utilization solar vacuum heat collecting tube, which belongs to the field of solar heat collecting and exchanging technology and equipment. Background technique [0002] Solar water heaters are loved by the general public as a daily necessities that provide cheap heat sources. At present, glass vacuum heat collecting tubes have been widely used in solar water heaters. In order to further improve the heat collection efficiency of solar heat collector tubes, the Chinese patent discloses a series of technical solutions for solar energy medium and high temperature heat collector tubes with internal light concentration and capacity reduction and the production method, mainly from the light concentration and capacity reduction to increase the heat exchange temperature of the vacuum tube and improve the utilization rate of solar energy Mak...
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IPC IPC(8): F24J2/46
CPCY02E10/40
Inventor 崔建伟
Owner 崔建伟