[Stoves] Solar for peace (Re: Dieter)

[Traveller]

Dieter:

Dieter:

I for one am thoroughly ignorant of many things and don't know that a
humane future requires low resource consumption and low emissions. I just
watch the dramas.

Nor am I sure of if claims about solar thermal v. PV will hold up ten years
from now. With wide-spread grid expansion and rooftop or backyard PV, PV is
already competitive with daytime peak grid costs in many places (though as
usual the rich are subsidized in Washington, DC or Germany).

Solar dire ct thermal is useful for larger-scale cooking, I already noted.

I like your ideas about peace through solar energy. Someone just discovered
a 1984 draft of my magnum opus "Atoms for Peace, Atoms for War, Atoms for
Profit" in Princeton library. I should now do a Solar for Peace, Solar for
War, Solar for Profit. (Didn't solar PV originate in the space program, and
wasn't there some literature on using solar energy for warfare? Even going
back to the Greeks? I am suffering from premature senility, it seems).

Nikhil



Message: 26
Date: Sat, 28 Jan 2017 15:10:43 +0100
From: "Dr. Dieter Seifert" <doseifert at googlemail.com>
To: Discussion of biomass cooking stoves
        <stoves at lists.bioenergylists.org>
Subject: Re: [Stoves] Biomass stoves v. PV-induction cooking (re:
        Frank)
Message-ID: <c864548e-09dc-7219-a65e-437ea2747e43 at googlemail.com>
Content-Type: text/plain; charset="windows-1252"; Format="flowed"

Dear Nikhil,


We know that the humane future requires low resource consumption and
low emissions.
The transition to cooking with PV is the opposite of that.

When we compare PV-cooking with solar cooking, we see that with solar cookers
the solar energy is converted directly to the required heat, practically
without intermediate processes. With a 1.4-m reflector
cooker with an effective power of about 500 W you can bring to the boil more
than 30 liters of water per sunny day, you can also roast, bake, preserve
and do much more. Attending needs only a few seconds per hour.
(See: http://solarcooking.wikia.com/wiki/Dieter_Seifert Documents: "About
Peace Making Effects of Solar Energy").

Cooking with PV with 500 watt would require a PV system with minimum one axis
tracking with approx. 4 square meters of PV-panels. The solar panels would
cost about 500 Euro without installation, chemical storage (battery) and
without the cooker. For cooking with battery there are not only additional
costs. The battery has a limited lifetime and a large consumption of
limited resources ? the opposite of the necessary way. If we think of
people in need, this PV application is hardly viable.


Best wishes,
Dieter

---------
(India +91) 909 995 2080
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