Efficient stove design

 Courtesy: Md. Aminul Hoque, ID-201001108, Department of EEE, Green University of Bangladesh

Efficiency is a great factor in energy conversion. We can use a technology properly or make better use of it by making it more efficient. Here, I present my idea for an efficient use of heat lost during cooking.

Most of the heat is lost due to uninsulated systems during cooking. Burning wood or gas in the stove produces CO₂ which is changing our climate. In my design, we can capture carbon as well as generate electricity from lost heat and easily create hot water in winter.

Design: I use a combination of water tube and fire tube boiler. The stove is an isolated system. The water pipes go from the boiler to the stove and surround the stove and return to the boiler. When the tube of fire goes from the stove to the boiler and comes out through the boiler. A carbon capture filter is attached to the end point of the fire tube. Thus, the rising heat in the isolated furnace is reduced by the water pipe and the heat lost in the air is also used by the boiler.

Working function: The first chimney valve is open so air enters the system through the furnace hole and exits normally through the chimney. We then open the fire tube valve and close the chimney valve so that the air now passes through the boiler and the water tube valve is also open for water to enter the stove. Thus, steam production in the boiler begins and over time the air pressure becomes sufficient to start the rotor of the generator.

CO₂ capture: There are only two ways steam can escape from the stove. So, if we attach carbon filters to these two ends, we can easily stop releasing carbon to nature.

Electricity: while the rotor is running electricity is generated. we can use this electricity directly or can store it in battery for further use. This will especially help people who have no energy source or can also help reduce electricity costs. This electricity can be used to heat houses in winter or on power devices that will help people living in remote areas of the world.

Hot Water: Warm water in winter is a necessary thing especially for older people and baby. Here, the water in the boiler can be used to make suitable hot water. We do not have to waste energy to heat water.

Suitable room temperature: Room temperature rises due to heat escaping during cooking. Thus, those who cook start sweating. This sweat can fall into the food and make it unhealthy. But in my design heat can’t escape the system so the room temperature stays the same and we don’t have to worry about sweat.

Smock free environment: Wood stoves produce smoke. This smoke is bad for breathing and can make you cry. In my design the smoke has to go through a carbon filter so the house will be smoke free.

Advantage: Although it is a bit expensive but it can save energy, give you electricity and hot water, make your kitchen a suitable place, last but least it can save planet earth from green house effect cause by CO₂ emission.

Application: It can be used due to suitable kitchen environment and power generation. we can use it in,

1) restaurant

2) rural area

3) people leave in cold city

4) Where resources are limited. Such as islands, ships, etc.

Safety and Discussion: The safety of the boiler is ensured by the valve. This type of boiler is not an industrial boiler and is designed to use the heat lost during cooking so that it can run for more than 10 to 15 years without maintenance. The main purpose of this design is to generate electricity from lost heat and to stop CO₂ emissions. CO₂ emissions have now become a major concern. Climate is changing rapidly so we should try to stop greenhouse gas emissions as much as possible. Although power generation is increasing day by day, electricity is not getting cheaper. So, restaurants can save their electricity by my design. This technology will be suitable for people who do not have access to electricity, live in remote areas or in cold weather, and also for restaurant owners. Our world resources are limited, so we should use it properly.