MODULE II
Solar energy technology Page 21

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Diagram 19: Function of a vacuum tube collector with "dry integration"



English translation of technical terms and sentences in diagram 19:

Wärmedämmung
= Heat insulation
Sammler = Collector
Kondensator aus Kupfer = Condenser made of copper
Absorber mit selektiver Beschichtung = Absorber with selective coating
Heat pipe aus Kupfer mit Wärmeträgermedium Wasser = Heat pipe made of copper with water as the heat carrying medium


There are also vacuum tube collectors with so called "wet integration" where the heat carrying liquid directly flows around the heat pipes of the vacuum tubes. A disadvantage of such collector systems with "wet integration" is that if one ones to replace individual tubes the whole system first has to be put out of operation, then has to be completely emptied and after the replacement was done has to be put into operation again. An advantage these collectors do have in contrast to collectors with "dry integration" is that they can be installed horizontally, diagonally or vertically. Diagram 20 and diagram 21 show vacuum tube collectors with "wet integration".

Diagram 20: Scheme of a vacuum tube collector with "wet integration Diagram 21: Sectional view of a vacuum tube collector with "wet integration

English translation of technical terms and sentences in diagram 20:

Vorlauf/Rücklauf
= Fore flow / return flow
Glasröhren = Glass tubes
Absorber = Absorber

 

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