Dear Stovers and especial Crispin and Richard
There is a big difference between practical cooking and scientific
tests.
A cook used to cook on charcoal will automatically remove the pot from the hot
zone for simmering and will do the same while cooking on an el hotplate
We had that situation in a huge institutional kitchen in Uganda in the middle
of the 90ties. 11 of 12 five kWh hot plates were out of order due to the fact
the cooks removed the pots for simmering and let the hotplate glowing instead
of switching down. I saw the same in Zambia in 2008. The reason could not be
anything else than the fact it is not possible to switch down a charcoal stove.
Crispin is always talking about you are transporting more “mj” by transporting
charcoal than biomass. When 50-60% or even more of heat is lost by the use, how
do’s this occur on the transport costs at the calculation of the efficient of
the stove?
Another thing, while cooking small quantities of beans 900 °C is to
hot and you have to constantly to ad more cold water due to evaporation. How
do’s that enter the calculation? To boil un- soaked beans on a TLUD-ND like
Peko Pe you will bring 1 kg un-soaked beans to a boil on the loss of energy
producing charcoal, and then continue simmering for two hours directly on the
charcoal produced emptied on a tray. How will that occur on the calculation.
It’s the practical use, which are the reality and let us have a real
calculation based on all facts, losses and costs included, on all levels of the
process of clean cooking.
With regards Paal W
_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
[email protected]
to UNSUBSCRIBE or Change your List Settings use the web page
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
for more Biomass Cooking Stoves, News and Information see our web site:
http://www.bioenergylists.org/
