| 摘要 |
The invention relates to a vacuum head that improves the intake and storage of solar energy in solar thermal collectors. The device relates to a vacuum head which forms a structural vacuum head where one or several high transmittance, parallely-arranged collector pipes are attached The main innovation of the vacuum head is characterized in that it allows vacuum to be provided to simple solar collector tubes (improved vacuum) also creating a vacuum redundant vacuum effect where vacuum collecting ducts are used, as the seals thereof are located within the head, and in the event of failure of the seals a decrease in the efficiency of the solar collector is not produced as the vacuum solar collectors tubes will not lose their vacuum. Another major innovation disclosed which significantly increases the lifetime of the vacuum solar collector tubes as there is also included a double protection, a first protection being provided by the head under a vacuum effect and, the second being that pr ovided by the collector tube which is sealed. A third innovation of the present system is characterized in that in the event of a failure in any of the heat collector tubes, it allows the tubes to be changed in a fast and simple way and the vacuum to be recovered thereby reverting the system to its high heat collection efficiency. Because the entire system can be operated as a low temperature trap, the configuration is formed using conventional components, which ensures a better efficiency, a reduced manufacturing cost and higher reliability.
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