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Re: If you had electric heat and a heat storage unit
Posted by Stepphen Goldberger (more from Stepphen Goldberger) on Sat, 12 Oct 2002 12:07:42
In Reply to: If you had electric heat and a heat storage unit, saw, Fri, 11 Oct 2002 21:38:05

It would still be worth your while to "drive the grid" from your solar array and use a heat pump to warm your hide. Thermodynamicists use "availability" as an indication of the power that can be extracted from an energy source. A swimming pool full of 110F water has a lot of energy in it, but you can extract a lot more work from a Hot-tub full of 1100F water (under great pressure). The availability of electric energy is very high.

That said, the efficiency of solar cells is quite low, only 10 to 15% of the solar energy impinging on the cells is converted to electricity, the rest turns to heat. Maybe one should rig the solar array so that the waste heat can be captured too!!!

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Posts in this Thread:

I think this is cool - Solar Power, Scott Paterson , Thu, 10 Oct 2002 15:46:03
- Re: I think this is cool - Solar Power, Dean, Sun, 13 Oct 2002 12:01:51
- cool - Solar Power, jp, Fri, 11 Oct 2002 21:54:04
- Correction: 400 Volts Startup..., Scott Paterson , Fri, 11 Oct 2002 12:35:40
- Solar Power - NJ Rebates, Reuven, Fri, 11 Oct 2002 12:07:33
- Excellent. Well done. nt, Jo K, Thu, 10 Oct 2002 22:01:14
- Scott, was that Astropower through Home Depot?, andy , Thu, 10 Oct 2002 21:29:05
  - My neighbor is doing a Home Depot solar deal......., lance, Sun, 13 Oct 2002 22:08:27
  - My local hardware store..., Scott Paterson , Fri, 11 Oct 2002 00:44:29
- Sweet! Would that be effective on the East Coast? (NY), Jason, Thu, 10 Oct 2002 21:10:09
- Estimated pay-back time?, John Davies, Thu, 10 Oct 2002 20:32:16
- care to share the cost with us?, MJP, Thu, 10 Oct 2002 19:08:45
  - Sure thing!, Scott Paterson , Thu, 10 Oct 2002 19:19:32
    - Re: Payback, BobS, Thu, 10 Oct 2002 22:36:51
      - If you had electric heat and a heat storage unit, saw, Fri, 11 Oct 2002 21:38:05
        Re: If you had electric heat and a heat storage unit, Stepphen Goldberger, Sat, 12 Oct 2002 12:07:42
      - $40 to $60 a month?, MisplacedYankee, Fri, 11 Oct 2002 00:53:07
        Re: $40 to $60 a month?, Scott Paterson , Fri, 11 Oct 2002 04:05:48
      - Well, duh...., Scott Paterson , Fri, 11 Oct 2002 00:45:52
- UPDATE!! The sun came out - 1,600 Watts, Scott Paterson , Thu, 10 Oct 2002 18:02:31
  - UPDATE UPDATE: 1900 Watts+, Scott Paterson , Thu, 22 Jan 2004 15:46:24
    - New Record 2,100 Watts, Scott Paterson , Wed, 1 Feb 2006 20:12:53
  - Great, will almost power my home theater now! :), Aaron Gilbert, Thu, 10 Oct 2002 18:15:19
    - Ehehehehe, Justin VanAbrahams, Fri, 11 Oct 2002 08:14:58
      - I'm planning a solar stereo., Aaron Gilbert, Fri, 11 Oct 2002 16:04:15
    - Re: Great, will almost power my home theater now! :), Bob M, Fri, 11 Oct 2002 07:12:55
      - Nice! Presume TV is off when you say 'off' ?, Aaron Gilbert, Fri, 11 Oct 2002 16:34:15
        Re: Nice! Presume TV is off when you say 'off' ?, Bob M, Fri, 23 Jan 2004 09:43:34
- How many volts does each panel produce?,,,,, zeke, Thu, 10 Oct 2002 17:52:48
  - You're right - here's a photo of the inverter, Scott Paterson , Thu, 10 Oct 2002 17:59:45
- Very Cool; subsidized power rocks!, WASSAAB, Thu, 10 Oct 2002 17:46:01
  - Power Selling Limits, Scott Paterson , Thu, 10 Oct 2002 17:57:59
    - Well that's bogus., Aaron Gilbert, Thu, 10 Oct 2002 18:18:53
- Awesome indeed! Long dream of mine.., Aaron Gilbert, Thu, 10 Oct 2002 17:11:00
  - No batteries involved... direct connect, Scott Paterson , Thu, 10 Oct 2002 18:00:35
    - Cool, makes sense... not sure why I thought otherwise.., Aaron Gilbert, Thu, 10 Oct 2002 18:13:16
- Interesting indeed. I have been toying with the ide to, Anders, Thu, 10 Oct 2002 16:41:21
  - Re: Interesting indeed. I have been toying with the ide to, GregD, Tue, 15 Oct 2002 13:53:17
  - Do these panels just absorb heat?, Mr. Science, Thu, 10 Oct 2002 16:48:36
    - Re: Do these panels just absorb heat?, JimBlake , Fri, 11 Oct 2002 09:02:18
- Awesome!, Mr. Science, Thu, 10 Oct 2002 16:05:09
  - Empirical Data, Scott Paterson , Thu, 10 Oct 2002 16:11:45

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