FUEL EFFICIENT ECO STOVES TECHNOLOGY
AND ENERGY SAVING BENEFITS
1. ECO stoves are the result of intensive research, improvements and development on the traditional stove technologies prevailing in the mountain areas of Pakistan. A variety of designs are developed which vary in price, capacity and utility.
2. ZKF has the capacity to provide all designs as well as transport them to any location, train the community in installation and educate them about the benefits.
3. ZKF has named and broadly defined them as follows:
a. Rural model with two cooking places:
(i) Those which have no base plate and rests on ground / clay floor.
(ii) Has two cooking pot holes with lids.
(iii) Is connected to a plastic drum for water heating.
(iv) Has a metal chimney pipe which takes the smoke out of the
kitchen / room.
b. Home model:
(i) Has a base plate.
(ii) Has an ash tray.
(iii) Stands on four legs of 2 inches each. Other features are same
as in rural model.
c. Tent model:
(i) Has a base plate and ash tray.
(ii) Stands on four 2 inch legs.
(iii) Has one cooking pot hole.
(iv) Has a smoke chimney pipe which goes horizontally out
of the tent.
4. Special features:
a. These stoves consume 40% to 50% less fuel compared to open fire / cooking facility because they have small holes in the fuel feeding window for oxygen.
b. In these utility stoves, cooking, room heating and water heating can be done simultaneously.
c. Some models have an ash tray so that the rugs / carpets in the room do not burn.
d. All models have a chimney pipe to take the smoke out of the room, kitchen or tents. This tremendously reduces the eye, lungs, throat and skin diseases in all household.
e. In summer months, these stoves can either be plastered with clay / mud from outside or fitted with (optional supply) of terracotta tiles from inside to reduce the heat in the room.
f. Since the opening / window of feeding fuel is small, therefore, big branches / timber can not be fed. Hence, twigs, dry leaves, corn cobs and cow dung cakes are the best sources of fuel.
g. By picking the pine cones, leaves and twigs from the jungle floor, chances of spread of forest fires are also reduced.
h. By proven less consumption of fuel in these stoves, the fuel collection trips of women in the jungle is also reduced by half and this extra time they can give to their family and children.
i. As the warm water is freely available in the attached drums, therefore, the families get accustomed to more frequent washing of clothes and bathing especially in winter months. Their improved hygiene reduces skin and other diseases.
5. How Eco-Stoves functions:
a. A half inch dia steel pipe runs inside the steel body of the Eco-Stove and two ends of the pipe project 6 “ from the narrow end of the stove (just as the twin tail pipes of the VW beetle cars).
b. Each of the pipes are connected with two pieces of metal wired plastic pipe of 3 to 4 feet each.
c. The connecting plastic pipes are then connected to the inlet and outlet metal pipes of plastic water drums capacity of which can vary from 25 to 200 liters(depending on the demand). When filled with water, the metal pipe inside the stove is also filled.
d. As the stove is heated with any of the abovementioned kinds of fuel, the water in the metal pipe also gets heated and due to expansion of water molecules, the water automatically starts circulating in the pipes and the drum. Hence, within 20-30 minutes a 25-30 liters of water is heated in the drum in winter season.
e. A tap is also fitted in the drum from which water can be taken for washing / bathing purposes.
f. While the cooking is being done on the stove, the room / tent also heats up in winter and simultaneously, the water drum connected to the stove is also heating water for washing and bathing.
Fuel Efficient Mud Stoves
ZKF has introduced fuel efficient mud stoves in village Ali Shah in 2011 where ten village housewives were given two days on-hand training to make a stove each for themselves for which they paid the cost price of Rs. 300 ($ 3.1) each.
A senior teacher of ZMS-T Ms. S.Subhan had attended a three days training session in Haripur in 2010. She is the Master Trainer ever since and devotes her time after the school time.
In March 2012, similar training session have been started in village Banda Malahan where so far, 20 women of the village received this on-hand training and produced a mud stove each for themselves. Each trainee contributes only Rs. 100 ($ one) towards the cost because this village had badly suffered in the 2010 floods as it was flooded up[to ten feet in water. More info in Relief section. Funding for this project came from Bavarian friends in Germany in 2010, which are mostly spent on overhead and logistic costs.