2015
Sustainable Technologies

Portable electricity is becoming one of the most demanded technologies since the widespread use of portable electronics over the last two decades. Devices with increasing functionability have also increasing power requirements that fall in the limit of current portable generators, ie. batteries. One solution is proposed here consisting of a fuel cell power generator working with hydrogen and ambient air, that has been modified to be able to provide maximum hydrogen-to-electricity energy conversion with minimal use of auxiliary elements to avoid extra volume, weight, and power consumption. Since hydrogen is used as stored energy, this fuel cell opens the possibility for the introduction of renewable energy consumption directly to the consumer in its daily life. Hydrogen can be generated ...

This project is about design of series of various processes through which a fuel cycle in an internal combustion engine setup can be created in which there would be no use of refueling the vehicles working on it & also it won't produce any kind of harmful emissions. This is achieved with the help of concepts of Sabatier reaction, CO2 membrane separation method, Reverse hydrogen fuel cell & Combustion of fossil fuels used in the vehicles. Using all this concepts a reversible cycle is created with help of various electrochemical processes. It mainly separates the CO2 gas from the other flues gases and converts it into natural gas CH4 which flows in the system and after performing it's work ...

Conversion of biogas to Methanol and application in IC engines

The project presents conversion of biogas to liquid fuel Methanol by Nucleophilic substitution reaction and its application in IC engine by changing valve timing.

A number of environmental and economic benefits are claimed for bio-fuels. Production of bio-methanol from biomass is one of the ways to reduce consumption of crude oil and environmental pollution. Using bio-methanol blended gasoline fuel for automobiles, we can significantly reduce both petroleum use and exhaust greenhouse gas emission. Bio-methanol can be produced from different kinds of raw materials. Conversion technologies for producing bio-methanol from cellulosic biomass resources such as forest materials, agricultural residues and urban wastes are explained. If we can use biofuel for ...

g-EN CO2 Engine harnesses inexhaustible ambient or waste heat and converts it to useful mechanical power, delivers more power than ICE (internal combustion engine) at the same size without burning hydrocarbon fuels, hence no greenhouse gas emissions. That solves the problems on pollutive energy from fossil fuels and deliver unlimited power to every people in any corner on earth.

The patent-pending technology behind it is using a very cold (about -40 degree C) carbon dioxide in a rotary-vane motor to absorb the ambient heat, expand, drive the shaft and exit. The CO2 can still remain very cold after exit and need to warm up to ambient temperature before feeding back to the motor in a closed loop cycle.

Besides, ...

Design brief
To design a renewable energy powered and portable water pump that can provide a viable alternative to diesel-driven ones

Target user group
Small and medium-scale Indian farmers in Bihar state

Mandatory requirements
- Portable
- Robust and locally servicable
- irrigate one hectare
- Maximum cost one lakh Indian rupees
- Ground water table at five meter depth

Concept
The concept was inspired from the working principle of siphon

Principle
The siphon refers specifically to a tube in an inverted U shape which causes a liquid to flow uphill, above the surface of the reservoir, without pumps, powered by the fall of the liquid as it flows down the tube under the ...

Using a simple solar balloon with dimensions at least 50 square ft. to generate a substantial amount of buoyancy. Specializing the shape for heat accumulation and possibly aero dynamics to act as a "a kite that always pushed up" with any angle of wind turbulence. small profile pump and controller to push air out or pull air in. Or the entire balloon system could be a robot that disengages at certain height, descends to re-engages the cables connected to the core after falling to the base of ' giant solenoid' generator. The hollow cylindrical generator will consist of an exterior field windings. Solar energy supplying eletricity (in series with an inverter) generating the perpendicular magneto flux across the cylinder. ...

We all know radiations are electromagnetic in nature. So the basic idea is to filter the electricity from the electromagnetic wave and store it in the form of electricity for future purposes.

# the idea : if we concentrate the radiation on a conductor and place that conductor inside the permanent magnetic field and in some intervals if we vary the concentration of radiation the magnetic flux will vary and due to variation in magnetic flux current will be produced in the conductor we can now store this current in the battery. We can utilize any radiation e.g. sunlight, gamma radiation, radio waves, etc.

#uses :the only limitation to uses of this type of device is the imagination, But ...

The proposed modular green roof is applicable to all buildings in rainy and tropical regions of the world. In the proposed system, it has been tried to mitigate or even solve the problems related to the previous systems such as requiring a large installation space, low water storage efficiency, water penetration to the interior part of the building, purification quality etc. This system is a part of the building which does not occupy extra space. In addition to the indirect form of rainwater absorption (through the plant containers), direct form of rainwater absorption (through the earthenware masses with six openings) was also used in our system to not only improve the water storage efficiency, but also to increase the ...