Description:
Abstract
Improved Cooking Stove (ICS) is boon to the developing country like Nepal
where more than 80% of the population residing on the rural areas depend on
firewood as the main source of fuel to fulfil their daily energy needs. Various
government agencies, NGO’s, INGO’s are working in the field of ICS since years
back but, the achievement made is only satisfactory. This research paper focus on
technical, economical and social consideration of improved cooking stove and address
different process for user friendly fabrication of improved cooking stove with
minimum utilization of raw material. Considering normal cooking practice for rural
community of Nepal, stove has been design for sitting mode which includes one
chimney, two pot holes, two feeding doors, two grate and modified top plate of mild
steel. Addition feature include isolite insulating brick which helps to retain heat
inside combustion chamber resulting increase in temperature, turbulence and time for
higher thermal efficiency, lower specific fuel wood consumption, better fire power
and burning rate. This paper describe three different design, whose performance was
compared based on Water Boiling Test which follow the calculations based on Shell
foundation Water Boiling Test Sheet Version 3, published by Aprovecho Research
Centre. The average thermal efficiency based on water boiling test of Prototype #1,
#2, #3 and #4 in cold start, hot start and simmering are 14-16-13 %, 18-19-9 %, 13-
26-18 % and 23-26-22 % respectively.