Abstract: With Kerala being one of the most humid places on planet earth; Summer, is the time when you wished you had an Air Conditioner. But, you would rather detest the idea because of the staggering electricity bills you would get once you start using the AC. And it would be a miracle if you could use an AC without paying those hefty electricity bills. In that case, it seems a miracle has just happened!

How about utilizing the free energy of the sun to power up your AC?

The hottest months usually, happens to be also the sunniest. You can use the scorching summer heat to actually remove the heat from your room with the help Photovoltaics (PVs) to power your AC. Photovoltaics are collection of cells which have photovoltaic material that makes use solar radiation to develop direct current electricity.

For achieving the best performance the PVs are connected to a solar tracker so as to align themselves towards the sun to receive the maximum amount of solar radiation. The use of a solar tracker would improve the performance of the PVs by whopping 50% in summer.



The use of Concentrated Solar power systems (CSP ) further enhances the utilization of solar power by making use of mirrors to concentrate solar energy onto a photovoltaic cell. Since CSP systems are bigger in construction and expensive they are seldom used to generate power for an air conditioner.


A typical air conditioner consists of the following


1) Condensing coil
2) Expansion valve
3) Evaporator Coil
4) Compressor


Once, the direct current developed by the PVs is fed to the Air Condition unit, you have an Air Conditioner which works on Solar Panels and you can be free from the tension of electricity bills draining your pockets.


Excess power if developed can be used to power other electrical appliance or sold back to a power grid! Ultimately the success of the system would depend upon the cost effectiveness.

Abstract: This mechanical engineering project requires electronic controls and sensors. Better try this in collaboration with electronics students.

The concept of an automatic lawn-mover is simple. It is a machine to cut grass automatically without human assistance. Many variety of this machine is already available in the market which have complex electronics parts. They cost around $1000.

Below is a video of a home made automatic lawn mover with a much simpler electronic parts. For your project it is better to try something like this than going for a very complex mechanism.

Air car can be made a project by making a demo model of the air car engine.
The working of the engine can be better understood from the following videos:

Abstract: It might be just a box of tools or a suitcase someone lost, either way suspicious unattended packages are reason enough to clear Airports, Shopping malls or the whole neighborhood. But while most humans are evacuated from the potential blast zone, one team is doing just the opposite. They are coming in for a closer look! And yes, you guessed it.

It is the Bomb squad. But the men in the bomb squad dare not get too close! In the past, they would have been forced to risk their lives inching ever closer to a device that could detonate at any moment. But now, they need not put their life at stake. It is time to change working the dangerous way. That is, by hand!

All thanks, to a brave machine; the “Bomb disposal robot” (BDR). By making use of this remote controlled unmanned robot, the lives of the bomb squad crew safe. Working up to half a mile ahead of the man juggling the joystick on the operator control unit, the BDR is busy trying to diffuse the bomb in the best way possible. The Robots first job is to get up and personal to the site, no matter the terrain. Once it has reached the objective, built in cameras help the crew get a heads up on what is considered potentially dangerous and initiate steps to handle the situation. The brain of the robot is the control unit. That is where the bomb squad operates from. The arms, cameras, mobility, everything is controlled by an operator.


The Robot consists of the following components