quentingargan
Registered User
- Messages
- 106
am i right in this ,
with solar system ,you have a bigger water cylinder, hence in winter your oil boiler has more work to do in heating this cylinder before it puts any heat into the rads ???
I beg to differ. To my mind, that is a bit of a rant, suggesting that it might cost €5K to €8K to install a system that would meet as little as 15% to 20% of your domestic hot water needs. The article also totally misunderstands zero loss efficiency in tests conducted by SPF on vacuum tubes (by simply ignoring IAM). The author favours DIY panels over commercial products, and DIY installation over professional installation. It isn't exactly unbiased, but then neither am I.We found the linked article very helpful and unbiased. Decided not to fit water-heating panels after all as it did not make economic sense to us.
The author favours DIY panels over commercial products, and DIY installation over professional installation. It isn't exactly unbiased, but then neither am I.
Finally, most solar cylinders have about 50mm of insulation, and are better at storing the heat, so there is less heat loss in the winter. This is often a forgotten benefit of installing solar water heating. In a good cylinder, if it has been brought up to 60 degrees the night before, in the morning the water temperature will only have fallen very slightly, so in fact your boiler will have much less work to do on its daily rounds to the radiators. :~)
Ah, I was talking about the author rather than the article. The author is an advocate of homemade systems. I don't mean to slag that off by the way - I made my own first solar water heater, and as long as you know what you are doing, DIY is a valid way of cutting costs.The article favours 'an indigenous, localised solar thermal industry producing low cost easy to install solar collectors for mass deployment in a manner similar to Austria.' Not exactly DIY panels.
DIY installation makes sense if you're trying to reduce the overall system cost to reduce the payback period.
Leo
Ah, I was talking about the author rather than the article. The author is an advocate of homemade systems. I don't mean to slag that off by the way - I made my own first solar water heater, and as long as you know what you are doing, DIY is a valid way of cutting costs.
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