Slot type solar heat collector

Abstract

The invention discloses a slot type solar heat collector which is characterized by comprising an open annular pipe, an absorbing coating, an insulating material and an inlet glass cover; the opening annular pipe is provided with an opening; the annular chamber body is internally provided with a heat-absorbing working fluid; the internal surface of the annular chamber body is provided with the absorbing coating; the external surface of the annular chamber body is provided with an insulating material; and the opening is connected with an inlet glass cover. In the invention, the slat type solar heat collector has the advantages that the severe requirements of the traditional vacuum pipe on the vacuum can be overcome, the structure can be greatly simplified, the manufacturing cost is obviously reduced, the characteristic of high absorption rate of the black chamber is sufficiently utilized, the gathered light beam is absorbed sufficiently, the heat collecting efficiency is high, the structure is simple, the maintenance is convenient, the cost is low, and the defects that the traditional slot-type system solar absorber-vacuum heat collecting pipe is inconvenient to machine and manufacture and has high machining charge and manufacturing charge, great technical difficulty, short service life and the like can be solved.

Description

Technical field [0001] The invention relates to a trough-type solar heat collector, which has wide applications in the field of solar light and heat utilization. Background technique [0002] With the rapid development of global industrialization, the consumption of coal, oil, natural gas and other energy sources continues to increase, and the global energy crisis is becoming more and more serious. Since the energy crisis occurred in the 1970s, global environmental pollution has become increasingly serious, coupled with the rapid development of new technologies in various fields, has set off a new upsurge in solar energy utilization. Solar energy has considerable advantages in energy development: (1) The reserves are extremely abundant. Solar radiation can continuously supply the earth, inexhaustible and inexhaustible. (2) Universality. Solar energy can be used on-site, which helps to alleviate the contradiction between energy supply and demand and transportation pressure. (3...

AI Technical Summary

Problems solved by technology

At present, this structure has the following technical problems: 1. There is a welding sealing problem between the metal and the glass; 2. The internal stress caused by the difference in the expansion of the metal tube and the glass pipeline; 3. It is difficult to ensure that the interlayer The problem of the vacuum degree in the

These technical problems determine its high production cost and short service life

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