How can we say parabolic trough collectors are the best compared to the remaining solar collectors….. What are the best advantages of parabolic trough collectors??
Sir, I want to know which of the above concentrated systems is efficient in large scale production and why? Please reply me sir
I really like the information provided in this article about Solar Tower. And I really like the way you have explained each and everything so well. very well done with the article. hope that you will continue to do posting. thanks for sharing I enjoying reading them.
Why is the transfer fluid pre-heated? Surely the Carnot efficiency would be improved if the cold sink was a low temperature!?
As explained above, solar towers use molten salts as their heat-transfer medium which is pumped around a closed circuit from storage tank to solar receiver and back. When heated the salt turns into a thick liquid that can be easily pumped, much like a thick oil. If allowed to cool sufficiently the salt can return back to a solid state which is difficult to pump and can block the pipework and/or solar receiver rendering the solar tower out-of-service until it is unblocked. Pre-heating the salt above its minimum melt point prior to it being pumped up the tower ensures the system does not become blocked. Once inside the solar receiver the sun does the rest heating the salt even further. 🙂
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