Solar powered Pesticide Sprayer

We have discussed lots of agricultural projects on this blog.This post is part of that series. Farming is one of the most oldest and important business ever done by humans but in most parts of the world it is done in traditional way. Though, farmers are adapting to changing times but their are many more things that's need to be done.

Why ?

At present time we use Power sprayer in two stroke petrol engine which pollutes our environment. It requires regular maintenance and filter cleaning regularly. It costs around Rs.70 / hr or $ 0.96 / hr. As demand of energy increasing, its cost is increasing too.  As we have seen example of Tractors, Motors electrical pump, Technology is being useful for improving production

How to build this project?

Their are two ways you can do it. First one is from the scratch where we build each and everything ourselves and learn basics of motor, blower and solar power technology and second way is where we avoid reinventing the wheel instead of that focus on our task in hand which is building pesticide sprayer which runs with the help of solar power.

How ?

First method:
Prepare design of your sprayer using computer aided tool( CAD). You will require following materials for building this project:
Solar Panel Battery

Blower 

DC Motor 

Adjusting 

Screw 

Connecting wires 

Second method:
You will need 82 W 12 V electric motor of around 1kg weight. Connect this motor with Li-ion battery which is further connected with solar panel. It would cost you around Rs.70 / hour which is at par with petrol powered sprayer.

Spherical Solar Energy Cells

The biggest hurdle in the use of clean energy is their costing which is far more than traditional sources. We at Projectideasblog.com always try to bring you information about the latest technologies and innovation and this article is one of those posts where we will not discuss about idea but technology which in future has potential to change our lives.Scientist around the world are working day and night to make it cost effective.Batteries and Material cost are two main reasons for its high production cost. We can bring down its cost in two ways; first by reducing the price of storage that we discussed in our last post and second by improving the efficiency which we are discussing today.

Today we will discuss about the new solar cell developed by Barcelona scientist Andre Broessel which can significantly improve the efficiency of existing cells. It is with solar energy is its low efficiency. German Architect Andre experiment seems to be solution of this problem and it would improve its efficiency by 35 percent.It is based on the concept of focusing sunlight to one point. Founder of this technology claims that it will not only improve efficiency of solar power plant but also produce electricity when sunlight is not widely available i.e. night.Moreover with the help of spherical cells we can produce solar power 24x7 which is itself a revolution and launchpad for future ideas to blossom.

Helpful links:
Spheral Power
Rawlemon Solar Devices

How it works?
It catches sun rays from all directions and concentrate this rays(moonlight or sunlight) on one point.Biggest advantage of using this technology is that It concentrates light by 10,000 times.

Important Links:

Rawlemon Spherical Solar Energy Generator 

Solar Powered Bag

From last few years phones are getting smart, Laptops are becoming Tablets and CD Players are becoming iPods. All these changes make us more dependent on electronic devices than ever. Though these devices keep us connected, but when battery runs out they become liability. That makes battery charging one of the most important needs of today’s world.
In my post mobile charger using bicycle, I discussed how we can charge our battery while riding on a bike. Today we will discuss about Solar powered Bag which is not only useful and handy but uses green technology too. Solar bag consists of skinny film solar cells and batteries. It contains a flexible mono crystalline solar panel, battery, charge controller, plugs, cords and light bulbs. It provides users with power up to 120 watt-hours/day, capable of powering electronic equipment's rated up to 300 W.

What is Monocrystalline solar Panel?
Monocrystalline silicon is the base material of the electronic industry. It consists of silicon in which the crystal lattice of the entire solid is continuous, unbroken (with no grain boundaries) to its edges. It can be prepared intrinsic, i.e. made of exceedingly pure silicon alone, or doped, containing very small quantities of other elements added to change in a controlled manner its semiconducting properties.

How it works?

The solar panels convert sunlight into electricity, which is stored in the batteries and can be used to power portable electronic appliances like mobile phones and mp3 players.

Advantages:

• Solar backpacks are light-weight, hence making it easier to carry. 
• Flexible solar panels also are light and portable, as well as waterproof. 
• Backpack allows patients to carry medical devices with them.

Solar Energy Project Ideas

 

Solar energy is a form of energy which is widely available in abundance and have many different uses. Energy provided by sun in 1 hour, if measured; is equivalent to energy consumed on earth in one whole year. And for this reason, their is ample opportunity to work and use this energy in comparison to any other form.

It is radiant light and heat from the sun, has been harnessed by humans since ancient times from drying clothes to generating electricity using a range of ever-evolving technologies.
Though it has many uses,but we often this energy as solar power, which is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP) with the help of lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam.

Solar Powered Motor

This project has 12V DC water pump,12V 7ah battery that was charged by my 6.5 watt solar cell and was able to pump water. This system seems to work really well.



Solar Water Heater

We can save large amount of electricity if we start using solar water heater at the place of traditional heaters. If we implement it using cogeneration, it would be really effective.

What wiki says about Solar Water Heater?

Related Pdf :
Parabolic Trough Water Heating System ( pdf )
Complete detail of this project with photos, outline and drawings. 

Sun Tracker Project : devices that orient various payloads toward the sun.

Produce Fuel using Sun Energy: harness energy from the sun to produce synthetic gas consist of water, CO₂ and Water.

Remote Control Plane : Flying Solar RC Plane's Panels, Batteries and Motors. Working on this project is easy, for experiment purpose, you can purchase electrical aircraft and replace it source of charging from batteries to solar.

3D Solar Cells : New form of cells, that capture nearly all of the light that strikes them. When used in the place of traditional cells, efficiency of the cell improves considerably.

LED Lights : Light emitting diodes are very reliable and can works in extreme conditions.When powered by sun, they can be installed at the distant places in minutes.

Stirling Engine Generator 

Solar Cooker
Solar cooker is a device which uses solar energy to heat and cook our food. It is very simple device and works on basic concept of concentration of energy at one point.It takes only 45 minutes to build a simple cooker.

Why it is important?
Energy plays a vital role in human development and welfare.Solar energy is the cheapest, inexhaustible
and can be used for cooking as well as various other activities.

Things you will need:
• shoe box
• aluminum foil
• string
• tape
• straws
• manila folder
• marshmallows (white and
chocolate, or other color)

How to build solar oven?
Pizza Box Solar Cooker (pdf)
Design, Development and Testing of Paraboloidal Solar Cooker
Build Reflective solar cooker(pdf file)

Solar Powered Mobile Charger

Solar Toy Car

 

A solar vehicle is an electric vehicle powered completely or significantly by direct solar energy. Usually, photovoltaic (PV) cells contained in solar panels convert the sun's energy directly into electric energy. The term "solar vehicle" usually implies that solar energy is used to power all or part of a vehicle's propulsion. Solar power may be also used to provide power for communications or controls or other auxiliary functions.

What is Solar Car ?
How can solar panels power a car?

How Solar Car Works ?

Solar car works on a very simple concept. It has solar panels on its top, which charge battery attached to it via wire. This battery is connected with small DC motor installed in the chassis of the car. This motor is connected to the wheels of the car via gears. In simple words, it is basic Remote control cars with only difference is that its battery gets charged via solar panels instead of traditional sources.

How to make Solar Powered Toy Car(Video) :




Solar Powered Refrigerator

Solar Chimney

Beam Circuit Solar Engines

Solar Powered Bird Scarer 

Steam engine powered by sun light

Solar Turbine generator

Solar Powered Path Finding vehicle

Solar Powered Generator 

Solar Powered Bicycle

Solar Powered Bag 

Solar Insect Robot

Solar powered automatic rain operated wiper

Air Conditioner 

Water Pumps

Solar Powered Boat 

Water Purification System : Filter water anywhere, at the place of camping or in a village where electricity is not available easily.

Carbon Solar Cells

Nanowires : New Innovation in solar energy

Other Webpages:

Stanford Solar Car Projects

Bob Solar Project Blogs

Solar Power Demonstration Projects

High Tech Projects

Mechanical engineering Project Ideas

Robotics 
Robotics would be a good choice for mech students because topics based on robots are very new and innovative in comparison to any other project idea.Moreover, If your robot works as expected on final day, it will definitely make you win.

Though I  have written separate post about robotics but for a starting point I have given all the important links in this section. Using these links you can strengthen your basics before designing some complex machine.

• How to build a Robot
• Robot Basics(pdf)
• Computer Controlled RC Car
• Robotic Spider
• Solar Insect Robot: You can build a insect robot powered by solar as your project. It will help you to understand the concepts of both Robotics and Solar power.
• Fire Fighting Robot
• Cleaning Robots
• Line Follower Robot
• Robotics
• Autonomous Agile flying machines

Solar Energy 
Solar energy is one of my favorite topics because though its working is easy to understand but ideas related to this topic are very useful for our future energy needs.

Concept : Generally they work on this concept:

Solar Energy --->Solar Panel---> Electricity--->Machine(Grinder, Juicer, Mobile Charger, Bag etc.) or Storage(Battery)
Solar Energy-->Heat-->Cooking, Boiling, Water Filter etc .

Important thing to consider in your assignment is that how you can improve its efficiency either for boiling purpose or for heating. For ex.  Recently discussed Spherical cell concentrate more sun light at one place and therefore generates more power similarly scientist have found out that nano solar cells are more flexible and more efficient than any other cell available.

Solar Compressor:
You can build something which gets its power from Sun Energy. For e.g., power your AC of a small room using compressor which get its power from solar panel.Such as Solar Powered Air Conditioner
In this example, it is a small room. Half ton capacity will be sufficient. You will need at least kWh/24 hours. This may require 10 to 12 square meter solar panel plus battery and inverter.

• Solar Power Air Compressor
• Uses of Solar Power Air Compressor
• Solar Water Heater
• Solar Energy Project Ideas
• Solar Energy Science Topics
• Green House Project Video
• Home based energy ppt in pdf format(239 kb file)
• Build your own Solar Powered Water Pumping Station
• Solar Powered Live Stock Watering System
• Solar Powered Automatic head light Dim/Bright Controller
• Solar Powered Boat
• Solar Powered Steam Engine
• Solar Turbine Generator : How we can use solar powered steam engine to generate electricity.
• Solar Powered Water Pumps
• Solar Powered Bicycle : Power your electrical cycle using solar energy
• Solar Powered Bag
• Solar Powered Water Purification System
• Solar Powered Remote Control Aircraft
• Solar Powered Rain operated Wiper 

Books on Solar Energy (pdf): 
Solar
Solar2
Hovercraft

Hovercraft definition by wiki : click here
It would be awesome if you design a hover car using tools of your house.

How to Build my own Hovercraft?

Engines 
Stirling Engine :

Video's and Complete Explanation of Stirling Engine Project

Stirling Engine Mini RC Car: We had discussed both Stirling Engine and Remote control cars in two separate posts. In this post we will combine these two technologies.

Solar Powered Stirling Engine Generator:

Steam engines 
These engines are powered by steam and building them will help you to understand the concept and working of steam engines.Though steam engines are most ancient engines, but it is still one of the most widely used engine.Thermal power plants are one of such use.Nowadays, due to the problem of global warming, we should find a way to produce steam using renewable sources of energy.Couple of renewable steam engines, I discussed on this blog are Solar Powered steam engine and Solar Turbine Generator.

Related:

Homemade Steam Engine
Steam engine powered bicycle

Wind Energy:

Wind Mill Water Pump :
How to build wind mill pump?

Related links :
How to make model of Wind Mill?
Wind Mill Power Generation System
Wind turbine kites

Wind Powered Drip irrigation System
Wind Mill Pump

Remote Control Cars

Building Fast Remote Control Cars
RC Control Computer Cars

Related links :
Demolition RC Car
RCC
Hydrogen cell operated remote control car
Computer controlled car

Trains
Maglev Trains
Propeller Monorail
3D Solar Cells  : Very Effective Design of solar cell. Used to enhance the efficiency of Solar Cell Significantly.

Hydraulic Car Lift : This project deals with fluid and how we can use it to lift the car.
Power Generation using Footsteps : Piezoelectric techniques used to convert energy of our footsteps in electricity.
Stair climbing Hand Cart : Handcart which would help you carry heavy materials upstairs.
Car Monitoring System
Highway Wind Turbines : Simple demonstration of how to use wind turbines at the divider of the road to generate electricity.
Power generation using Railway Tracks : See how we can use Variable capacitor for generating electricity.This is latest project in the field of renewable energy.
Stirling Engine Mini RC Car
Nitro Cars  : Cars powered by methane and nitro methane.
Fruit Picking Robot : Do you think robot should work in the garden? If yes , then this project is for you!
Soccer Playing Mini robot : Do you like robots and soccer both then you would like this idea too.
Produce fuel using solar energy : Produce synthetic gas using CO2, oxygen and water.
Pedal Powered Water Filter: Filter water throughout the year ,day or noon using the simple concept of evaporation and condensation.
Pedal Powered Juicer Grinder
Light Weight Floating Wind Turbine This simple project demonstrate the power of floating turbines.
Bio gas Powered Water Heater 
Bicycle Powered Cell Phone Charger : Have you thought about charging your cell phone using your cycle. This idea would discuss about all that.
Steam engine powered Bicycle : Whenever we thought about steam engines, the first thought comes to our mind is train engine,but have you ever thought of steam engine powered by cycle?
Mechanical Sprayer : Spray pesticides using mechanical energy instead of fossil fuel or electricity.
Mechanical Creeper for Disable Person
Waste Management Machine
Water Powered Generator
Air Exchanger Ventilation System
Fuzzy logic approach for Traffic signals control of an isolated intersection( Project Report in PDF)
Synchromesh gear

Latest Projects:

Formula One Racing Car : Students of Amity University, Noida manufactured a car which can make anyone proud. It weights around 340 kg including driver and its top speed is 105km/hr.M More Info

Protective Gloves: Another project which I have seen recently is electric gloves which can be used by girls for their protection. They are easy to wear and protect the wearer by giving electric shock.

More :
CAD Project Ideas & Catia Projects  (Design project for students)
Thermal Engineering Projects
HydroPower Project 
Aeronautical Projects 
Design and Development of Smoke flow Visualization system
Tricycle powered by pedal and electricity
Design and fabrication of Sub Marine
Car Locator Project
Generate Electricity from Dance Floor
Human Power Harvesting
Hydraulic Regenerative Braking System
Mini Bio Gas Fuel Turbine
Power generation using footsteps
mini homemade wood lathe machine
Perpetual Motion Machine 
Pedal powered refrigerator
Jaipur Foot
Automatic Car Parking 
Self Balancing Cycles and Unicycles
IE Engine Projects
Electronic Fuel Injection
Study of cooling Tower
Air Compressed Cars 
Air Bike 
Mini Scooter 
Hydrogen Powered Vehicle
Escalator Compatible Wheel Chair
Fuel Energizer
Thermal Engineering Projects
Automobile Projects 
RC Helicopter
Carbon Solar Cells
Autonomous aerial vehicle
Build Electric Two Wheeler Bike
Biogas Powered Vehicle
Non Conventional Energy Projects
Manual Pump
Cogeneration 
Kinematic Project
Bicycle Sprayer 

Solar Object Lifting Jack : It is motorized electronic lifting jack which is powered by solar energy.

Paddle powered mobile charger : It is based on dynamo chain concept.We have been using dynamo in bicycle from years. The best part about this project is, mobile charger kits are available at online stores. You can learn the whole concept by purchasing a kit online to disassemble it. 

Produce Fuel using Solar Energy

Scientists around the world are working towards the goal of developing technologies to harness energy from the sun to produce fuels for transport, industry and electricity generation. Fuels produced using solar energy would transform our future energy options by providing an alternative to fossil fuels.Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaics, solar thermal electricity and solar architecture, which can make considerable contributions to solving some of the most urgent problems the world now faces.We all know about the ever growing energy needs of our world.

 If we can use it to produce fuel , it would be milestone for us and for our future generation. Many researches around the world are working on this project.


Our Objective:

To produce synthetic gas which can be used with our currently available infrastructure.This project should have the potential not only to be completely renewable, but to produce a minimal carbon footprint.

Concept:
It can be done using process known as a two-step solar thermochemical cycle, which involves using concentrated sunlight to heat a metal oxide and split it into metal and oxygen.  The resulting metal is then reacted with carbon dioxide and water, producing carbon monoxide and hydrogen, or synthesis gas, which can be used to make diesel fuel and other synthetic fuels.

Procedure:


The process begins with a solar simulator in the form of seven mirrored, 6,500-watt lamps that concentrate the light on a 10-centimeter spot with an irradiance of 3,000 suns. With this concentrated radiant energy, one can generate temperatures of more than 3,600 F in a chemical reactor. There, carbon dioxide and water are split to form carbon monoxide and hydrogen, the two components of synthetic gas.The key to the technology rests with oxides of two metals: zinc and cerium which allow us to split water and carbon dioxide at temperatures achievable with modern solar concentrating devices.

Useful Link:

University of Minnesota 

Related Video:

Solar powered remote controlled aircraft

In  December 17, 1903  when Wright brothers build first aircraft,it became discovery, that changed the world completely.They build fixed wing aircraft which is capable of flight using wings that generate lift due to the vehicle's forward airspeed and the shape of the wings.In last century though, everything improved from design of aircraft, fuel efficiency and power of engine but aircraft fuel which is most important has not changed and become leading cause of global warming.

Why?
If you read airplane history, you would find that human need and desire of flying is more powerful than flying with renewable energy.So, focus in last century was only on designing and improving efficiency of engine and not on changing its fuel.

So , Why now?
In last decade, awareness of general public about climate change has increase significantly. With this awareness and fuel price that are rising at rocket speed creates catastrophic effect, which pressurizes us to think about alternate fuel for aircraft and one of these alternates is Solar Energy, which we are going to discuss today.

Is it possible?

Yes it is, recently Swiss made Solar Powered Plane, Solar Impulse completed its 4000 miles journey between Europe and Africa successfully. You can read more about it at news website msnbc.


What's the need of building solar powered RC planes?

When we think of building our plane, we know that because of financial and knowledge constraint we can only build models and small planes as our engineering project. We already discussed about RC planes in Aeronautical Projects Post . Solar Powered RC Plane is extension of that post.
Most of you know that planes are the biggest polluter of the world. In a series of steps we need to tackle global warming , solar rc planes could be vital.


Basic Principle:

Sun Energy --> Solar Panels -->Batteries-->Converter-->Motor and Electronics Equipment


How to build one?

Design :

Design of Solar Airplanes(PDF)
Performance Analysis 

Requirements:
MATLAB : For designing your plane
Mono-crystalline Silicon cells
Lithium Polymer Battery
Motor
Management System for Charge/ Discharge and Temperature
Thermal Insulation ( To Safeguard batteries from external environment)

Procedure:

Jon Kalow, Jun Kudo and James Nick Vines discuss complete procedure,prototype and details about building solar RC Plane at their webpage.Click here for complete detail

Useful PDF:
Solar Impulse

Related Projects:

Aeronautics 

Solar powered water purification system

Waterborne diseases have significant contribution in total number of diseases around the world. Most of the developing countries governments around the world are still struggling to provide clean water to their people.This problem is much more severe in some parts of Africa.

Today we will discuss how we can use solar energy to purify water. This would be great project not only for you as your engineering project but people whom life will change by your effort.

In my research I found that it is extremely difficult to make water completely clean.Even, if we heat water to 100 degree Celsius(212 Fahrenheit), some bacteria's would survive till 118 degree Celsius(244.4 F).Thus we would try to filter as much as we can using sun energy to make it less harmful.

Sodis: Solar water disinfection is one of the most easiest method of water filtration. You just need to fill clean plastic bottles with water(somewhat filtered with traditional method like sand) and expose these bottles to direct sunlight from 6 hours to 2 days (depending upon the condition). Water will get mostly disinfected.



Solar Water Purifier: It uses the concept natural fiteration of evaporation and condensation. When water gets heated with sunlight, it starts converting into water vapor which later condensed to get pure drinking water.

Related:
The development of a solar thermal water purification, heating, and power generation system(pdf)

3D Solar Cells

We all know that popular conventional energy resources  such as oil, coal, natural gas and nuclear power are accompanied by problems of air and water pollution, resource depletion and the greenhouse effect, all of which are becoming increasingly unacceptable and difficult to afford. In the 21st century PV (Solar Energy) can potentially meet the rapidly growing demand for electricity with minimal environmental consequence.

Despite being one of the best alternative , solar energy is far behind from coal and nuclear energy in terms of market share. Moreover, it is costlier and less efficient   than its counterparts.To improve its efficiency and reducing cost, we should move towards advanced solar cells such as 3 dimensional.


 Three-dimensional solar cells that capture nearly all of the light that strikes them and could boost the efficiency of photovoltaic systems while reducing their size, weight and mechanical complexity. The new 3D solar cells, created at the Georgia Tech Research Institute, capture photons from sunlight using an array of miniature “tower” structures that resemble high-rise buildings in a city street grid.

This idea of 3D Cell is of William Yuan is a freshman from Beaverton, Oregon.Yuan has developed a 3D solar cell that has the potential to revolutionize solar power.At the heart of Yuan's project is a solar cell that can harness both visible and ultraviolet light.Yuan's solar cells are calculated to absorb about five hundred times more light then a conventional solar cell and nine times more than advanced 3D solar cells.

More Info

\

Solar Powered Air Conditoner

Air conditioners are both cause and solution of global warming, due to rise in temperature in recent years, it becomes necessary for each one of us to have air conditioner. It has become very important part of our life in recent years. The only problem is that it consumes great amount of electricity which results is more global warming.

One of the best solution of above problem is air conditioner which do not use electricity generated by pollution generating fuel, instead use something renewable and unconventional. One of the example for that is Solar Powered Air conditioner which takes its power from solar.Solar air conditioning refers to any air conditioning (cooling) system that uses solar power.

This project is part of solar project ideas and can be used by students of Mechanical  or Electronics engineering. Even students of Physics would find it interesting.If this project is implemented with Passive Solar Design , it would be more effective.

Helpful Links :

Solar Air Conditioning 

Related PDF :

SAC
Solar Driven Absorption Air Conditioning Systems for the Caribbean
Liquid Dessicated Solar Air-Conditioner

Related Presentation(ppt):

Solar Desiccant Air Conditioning 

How Solar Air Conditioning Works ?




Related Video :


Related Projects :
Solar Project Ideas

Sun Tracker Project

Solar energy is the most powerful resource that can be used to generate power. So far the efficiency of generating power of solar energy is relatively low. Thus, how to increase the efficiency of generating power of solar energy is very important.

According to Wiki A solar tracker is a generic term used to describe devices that orient various payloads toward the sun. Payloads can be photovoltaic panels, reflectors, lenses or other optical devices.It is used to minimize the angle of incidence between the incoming light and a photo voltaic panel. This increases the amount of energy produced from a fixed amount of installed power generating capacity.

This project idea is for students of Mechanical and Electronics engineering. Moreover , students of MIT have won prize for the same.Cleveland State University students has done project on sun tracker in 2008.

Related PDF :

Microprocessor based solar tracking system using stepper motor

Related Videos :
University of Berkley Solar Tracker Project



Download code of this project at Google Code

Related :
Solar Projects

Solar Powered Path Finding vehicle

To build this project you need to answer two important questions:

First, How to use solar to power the Robot?

It is fairly easy to implement, just buy one electronic toy car and Install PV cells at the top of it. Connect these cells to the rechargeable batteries.

Get Details about Solar Vehicle
How Solar Panels Power a car?
Presentations of Solar-Powered Endurance Vehicle Project

How to build your own solar vehicle?
Cheap easy Solar Powered Robot
Solar Powered 10 mg Silicon Robot(pdf)

And

Second, How to implement path finding in your vehicle?

Path finding is a technique to move robot from point A to point B avoiding any obstacle in the path. We can many different techniques for that but the most popular one is to first make our robot familiar with the surrounding and then robot can use surrounding information in Path finding. This technique is very old and is not useful in challenges where robot doesn’t know anything about the surroundings. So, to it more, I am giving you some links of robotics path finding methods.

What is Path Finding ?
Vehicle path-planning in three dimensions using optics analogs
Autonomous Path finding(pdf)

Related Videos :

Solar Powered Stirling Engine Generator

What happened in Japan , can happen anywhere.This disaster is clear warning for the dangers of nuclear energy.Many countries started to avoid nuclear fuel for future energy needs. Even though nuclear energy is great source of green energy ,but because of natural disasters such as Tsunami and earthquake ,it can be dangerous too. In this post we are going to discuss about electricity generation using solar.

It is highly recommended to go through Stirling engine  post before reading further.As we know Stirling  project is very easy to implement.While, in general Stirling engine we use candle as a heat source ,here we would use solar energy.

Links which would be helpful :

Solar Heat Engines 
Stirling Engines : Scrap to Power 
 
Related PDF :
Solar Dish

Related Video :



Generate electricity using this engine :



Related :
Stirling engine Project
Solar Projects