Quote:
Originally Posted by SgtThursday
Guys,
Work out the required overall system efficiency to deliver 5 kWh of electricity 24/7, PLUS air con, PLUS hot water from 7 tube arrays measuring 2m * 2.4 m each in Brisbane (avg insolation 5.25 PSH).
Compare with published efficiencies for other solar thermal systems (eg. parabolic trough concentrators).
Then decide whether the kW vs kWh question is even worth quibbling about.
SgtThursday
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Hi Sgt , Welcome to the forum.
Don't you mean 5 kw 24/7 and not 5 kwh 24/7 ?
As I understand from the web site, the system generator is rated at 5 kWe and is said to produce 120 kwh per day, presumably from the captured thermal energy.
As discussed, the site though appears a bit sloppy and inconsistent in its use of terminology. That's the main point raised.
I might say though, that efficiency alone, is not the only factor that needs to be considered when implementing a design. Ease of operation, reliability and cost of maintenance and repairs etc.. are also key factors.
I can't comment further on the system itself because I am not privy to its specs. I understand they are releasing the product to the market this year.
It's not really my area and I might add though, that I do think their figures appear very optimistic, but without knowing all relevant information, it's difficult for me to draw a firm conclusion.
With that said, I'm not sure where you got your figures from. I could not see reference to them on the web site.
Can you please elaborate more specifically what you are trying to convey.
Thanks