[Stoves] Stoves for water-heating (Re: Crispin on Indonesia)

[Traveller]

Moderator: I changed the subject line.

N
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Crispin:

"What you may notice (Cecil did) is that people who have LPG don't use it
for heating water. That is often done (Lusaka for example) on charcoal even
in wealthy households. In Java everyone uses at least a little LPG if it is
available ? even in places where you think it is impossible to get it
there. They also (70%) use wood to heat water even if they cook with LPG.
Thus it is not simple. In an attempt to encourage change we (CSI Indonesia)
offered incentives to anyone who could make a dedicated water heater ? even
if it only ran on pellets ? provided the efficiency was really high ? more
like a regular gas water heaters. It was a perfect opportunity for TLUD?s
because the fuel load can be matched to the task at hand. Not one product
was submitted in that category, so far."


It is RATHER SIMPLE. Cooking has a different rhythm and time/money
priorities than hot water. Besides, water heating can be done outside, in
the verandah.

It is as simple as that. Hot water heaters - electric, even solar - sell by
hundreds of millions, and in Vanuatu LPG was the preferred fuel because
electricity was extremely expensive (at one point close to US 60c/kWh for
large customers).

My family used charcoal for water heating, then an electric rod for until
we got LPG, then an "instant" electric water heater when we could afford it
(and now an all-time tank water heater). Solar isn't worth it for small
families unless electricity and LPG are too expensive.

Why do you bother with efficiency? Why aren't daily average emission loads
enough (assuming these dedicated water heaters are outside)?

Or have you bought into this "emission rates -> health damage" cult?

Remember Kirk Smith and Karabi Dutta's piece - "Cooking Like Gas".

A far easier argument will be "Heating Like Gas" (water or space) for a
certain segment of the population and commercial customer base that

i) can be served reliably with high quality biomass at relatively low cost
and
ii) in areas of low population density and otherwise low levels of air
pollution. (These also happen to be areas where LPG and electricity
penetration rates are low and their supply costs high.)

For cooking, time savings are of utmost importance to cooks, but the
WHO/EPA crowd seems to have convinced the ISO EPA otherwise.

Because they want to serve the masters of science. Not misses and missuses
of cooking.

Hence the mindless attack on "stacking" and ventilation. The moment you
allow that "service standards" of a stove vary - and that "ventilation
factors" vary for different "stove services" - the theology of linear,
mechanical relationship of emission rates to deaths goes out the window,
BAMG pretensions notwithstanding.

Nikhil
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