[Stoves] Gas lamp efficiency

[AJH]

On Tue, 19 Sep 2006 06:47:30 +0530, nari phaltan wrote:

>You all might take a look at; http:/nariphaltan.virtualave.net/lantern.htm
>

Thanks Nari

For anyone that didn't have time to look Nari has a table where he
compares the Lumens output per Watt of input for an electric light
bulb, some liquid fuel lamps and a fluorescent tube. 

He gives

Bulb                13.4 lm/W
Noorie kerosine     2.03 lm/W
Noorie alcohol      2.82 lm/W
Hurricane (kerosene)0.35 lm/W
Petromax (kerosene) 1.27 lm/W
Fluorescent tube,   60.00lm/W

So even if you discount the poor conversion efficiency of a small
genset at say 20% conversion of thermal to electric, it does seem to
confirm what I thought.

One must bear in mind though that a generator just producing 100W(e)
will not manage the efficiency of a 4kW(e) one and initial costs and
maintenance are a factor.

It also makes a TEG at 10% conversion efficiency and some bright LEDs
look competitive.

AJH