[Stoves] Pico Hydro power generation calculations

[Ron Larson]

Jeff -

Agreed on the amazing prowess of electricity.   If the AAs are disposable, 
however, the cost per kWh is huge - hundreds of dollars per kWh.  But with 
rechargeables and PV, the cost can get down to dollars per kWh.  (I haven't 
done that calculation for a while, so those numbers are from memory.)   In 
large US residential PV applications and no storage, we are down to about 
25-35 c/ kWh (and I hear $1/Watt within years).

Ron

----- Original Message ----- 
From: "Jeff Davis" <jeff0124 at velocity.net>
To: "Discussion of biomass cooking stoves" <stoves at listserv.repp.org>
Sent: Tuesday, July 03, 2007 3:32 PM
Subject: Re: [Stoves] Pico Hydro power generation calculations


Dear Jim & All,

The power of two AA batteries is truly amazing. For every meal they can
lift 200 lbs of water on to my roof. And if one could use them for three
meals they would be able to lift 600 lbs of water on to the top of my
roof. That's a lot of work for such a small device.


Truly a miracle,

Jeff



Jim wrote:
> If these calculations are correct, at fan outputs of one watt or higher,
> this looks like a very impractical method of producing power in the
> kitchen unless one has a strong roof that can hold 200 pounds of water
> (~25 gallons) and a method to get the water up to the roof.




-- 
Jeff Davis

Some where 20 miles south of Lake Erie, USA

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