Heat exchanger panel and method for manufacturing thereof

Abstract

The invention relates to a heat exchanger panel (10) preferably for heat exchange utilizing light energy, comprising a board (24) having plates parallel to each other, and partition walls (12) dividing the inner space between the plates into parallel channels (14), said partition walls (12) joining the plates and being of a same material as the plates, passages (18) in the partition walls (12), said passages enabling the flow of a heat exchanger medium between the neighbouring channels (14) and providing a flow path (20) for the medium, sealing units (16) covering openings at the ends of the channels (14) and joints (22) allowing the heat exchanger medium to enter into and exit from the panel (10). According to the invention, the sealing units (16) are made of a sealant which is thermal expansion compatible with the material of the board (24), the sealant being introduced into the ends of the channels (14). The invention also relates to a method for manufacturing the heat exchanger panel (10).

Description

technical field [0001] The invention relates to a heat exchanger panel suitable for the accumulation and dissipation of light energy, and a method for its manufacture. Background technique [0002] The application of heat exchanger elements as solar thermal collectors is more and more widespread, but due to the dependence of heat exchanger elements on latitude, climatic conditions and taxation and subsidy systems of various countries, they have very different and relatively long periods (5 to 10 years) payback period, and now mainly environmentally conscious people buy them. The increasing use of solar thermal collectors will certainly reduce the adverse effects of global warming. According to the data released by EurObserv'Er2010, in 2009, more than 40.2 million square meters of solar collectors were installed in the world, of which 4.3 million square meters in Europe had a power equivalent to more than 2800 MW, which is numerically It is equivalent to the power of ordina...

AI Technical Summary

Problems solved by technology

The solutions listed here usually consist of extremely expensive heat exchanger elements made with sealed walls

[0017] The disadvantage of the prior art solutions is that they do not provide a solution for sealing the ends of the channels in an efficient, low cost, durable and pressure resistant manner, and therefore do not provide solutions for plastics - such as are commercially available in the manufacture of solar collectors To the polycarbonate sheet - the application of the solution

Polycarbonate has high rigidity and a considerable coefficient of thermal expansion, which is many times that of metals, for example 2.85 times higher than aluminum and 5.81 times higher than iron. Solve the sealing of the channel ends in a way that can tolerate long-term thermal fluctuations that must occur in daily use

Another disadvantage of prior art solutions is that they are often very complex and expensive to manufacture

As a result, polycarbonate heat exchanger panels are not widely used

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