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Old 06-22-14, 05:11 AM   #16
osolemio
Hong Kong
 
Join Date: May 2010
Location: Hong Kong
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Quote:
Originally Posted by jeff5may View Post
The new kid on the block is BETAINE (BEET-uh-een), aka trimethylglycine. It is derived from sugar beets as a by-product of, you guessed it, the sugar manufacturing process. Being the entrepreneurs that they are, the sugar beet farmers have improvised a new product from their waste.

Here's a product flyer:
http://www.climalife.dehon.com/uploa...-uk-08-pdf.pdf

The only problem I see in your application for this product is its high temperature limit. Above 100 degC, it starts to disintegrate/decompose.
Biproduct from sugar, sweet!

I see this is a European product, should make it even better for me. I saw that company also has another product which does boil around 105C, but it's stable up to 150 (without gelling up)

As I wrote before, I do intend to keep the system cooled off all the time, both for efficiency and to avoid overheating of PVs (it's a hybrid system) and the heat transfer liquid.

The only concern is what happens if - despite redundancies - the panels do overheat.
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Space heating/cooling and water heating by solar, Annual Geo Solar, drainwater heat recovery, Solar PV (to grid), rainwater recovery and more ...
Installing all this in a house from 1980, Copenhagen, Denmark. Living in Hong Kong. Main goal: Developing "Diffuse Light Concentration" technology for solar thermal.
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