SOLAR STIRLING POWER TECHNOLOGY

PREPARED

BY

MUHAMMAD IRFAN RAJPUT

IN THE RESPECT OF

MUHAMMAD MUREED TUNIO

INDEX

SOLAR APPLICATIONS SOLAR STIRLING ENGINE DIAGRAM OVERVIEW OF STIRLING ENGINE MANUFACTURING OF SOLAR STIRLING

ENGINE ADVANTAGES OF STIRLING ENGINE DISADVANTAGES OF STIRLING ENGINE SCOPE OF SOLAR STIRLING TECHNOLOGY CONCLUSION

SOLAR APPLICATIONS

PV CELL FLAT PLATE COLLECTORS SOALR SPACE HEATING SOLAR STEAM POWER PALNTS SOLAR COOKER SOLAR DRYERS SOALR WATER DESALINATION SOLAR REFRIGERATION

SOALR STIRLING ENGINE

A solar Stirling Engine (or Hot Air Engine) takes advantage of the fact that concentrated sunlight is a fantastic heat source, and as such can be used to generate electricity more efficiently than photovoltaic solar panels.

OVERVIEW OF STIRLING ENGINE

What basically Stirling Engine is? Reciprocating engine.

External combustion (get heat from external source).

Converts heat energy into mechanical power by alternately compressing and expanding a fixed quantity of the working fluid at different temperatures.

Work on both conventional and non conventional sources

Efficient , clean & silent

The Stirling engine was developed in 1816 by Robert Stirling in order to offer an alternative to the frequently explosive early steam engines. Basically a closed cylinder containing a piston and helium, nitrogen or hydrogen gas is heated at one end by concentrated sunlight, and cooled at the other end by air or water. As the gas expands and cools with the movement of the piston, a generator can be driven to produce electricity. (If the engine is run in reverse then it produces a cooling effect acting as a 'Stirling cooler'

Reciprocating engine.External combustion (get heat from external source).Converts heat energy into mechanical power by alternately compressing and expanding a fixed quantity of the working fluid at different temperatures. Work on both conventional and non conventional sourcesEfficient , clean & silent

Idealized Stirling cycle

1-2: Isothermal compression

2-3: Isochoric heat addition

3-4: Isothermal expansion

4-1: Isochoric heat rejection

MANUFACTURING OF SOLAR STIRLING POWER UNIT

A parabolic dish is used to get heat from the sun, and for reflection of sun light the aluminum foil is used there.The size of the parabolic collector is depending upon the power of stirling engine.Then a stirling engine is placed at the focal point of the solar collector.The electric generator is also coupled with the stirling engine.When cylinder of engine get hot by the sun heat then it starts working thus power produces by the generator.

MANUFACTURING OF SOLAR STIRLING POWER SYTEM

THE VIEW OF 500MW POWER PLANT OPERATED BY SOLAR STIRLING ENGINE IN USA CALIFORNIA.

Advantages of solar stirling engine

The silence of operation.

Can run on any available heat source.

Supplying heat from continuous combustion process.

Some cases, allows the use of lightweight cylinders.

The engine mechanisms are simple in many ways.

Stirling engines are best for constant speed purpose.

Their maintenance cost is very low.

Disadvantages of solar stirling engine

The initial cost of the engine

It needs to warm up.

The problems of sealing.

Design complexity.

Some stirling engines are large for the amount of power that they produce.

Losses increased due to regenerator, heater and cooler.

THE SCOPE OF SOLAR STIRLING TECHNOLOGY

As we know that today the huge amount of world’s power is produced by the fossil fuels and that is also threaten to the environment.

Even the prices of power are increasing day by day due oil crises and also the trend of load shedding has been started.

So now the trend should be changed the technology has to be switched off instead of renewable energy resources.

The solar stirling technology is best option to produce maximum power to overcome energy crises.

The capital cost is high of this technology but the source of energy is free till the universe ends.

“Change is the only constant factor in the

World”