Solar Thermal Electricity Generation

WHAT IS SOLAR THERMAL?: Solar thermal is a term to describe the process of generating electricity from the sun’s heat. In any thermal process, drinking water is a primary ingredient or medium for the transfer and utilization of this thermal heat.

THE MODE ASSOCIATED WITH OPERATION: Solar thermal plants work on exactly the same principle as a geyser. A geyser happens when underground water gets sizzling and pressure from above causes water to get hotter and lighter so it gets up to the surface and explodes out. The water later condenses plus runs back to the ground and starts all over again. Geysers are natural phenomena and just like any other scientific processes, solar thermal is a mimicry of this natural procedure channeled toward energy generation. Geysers have heat, a water tank, an opening where the water may shoot out and also go back to the earth reservoir.

This article is based on computer simulations that was produced from my calculations plus researches into alternative sources of electrical power generation. Various extrapolation have been manufactured from my computer model and the result bears close correlation to an actual system.

TECHNICAL DETAILS OF A SOLAR THERMAL SYSTEM: A means of capturing the sun’s heat is devised by means of an array of lenses on a surface.
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The dimensions of the surface is important since it determines the quantity of heat that will be generated. All the Sun’s rays falling on a surface of 100m2, for instance, can be harnessed by a range of lenses and the heat produced designed to heat up water to super high temperature and this superheated water converted to vapor, eventually let out through tiny spaces at great pressure, to turn turbine blades that has its shaft extended to form the rotor of an electrical power generator or large dynamo. A type of connection or heat conduction through the focal point of the lenses to the drinking water reservoir can be in the form of molten lava. The rays of the Sun, through the lenses is made to turn rock beds molten which lava will directly heat up water at great pressure thus getting superheated steam. The heat required to switch rock molten has been computer established and the quantity of rock has also been computer determined and from extrapolations made, it is found that it is possible for the focal points of the lenses to produce sufficient heat to turn rock beds smelted in a short time.

The superheated steam can be channeled towards the blades of a generator and by turning the blades of the turbine, electricity is generated. The steam after impinging on the blades, can be lead away to chambers where it is cooled and condenses and returns to the reservoir where it is reheated and the process will be repeated.

CHALLENGES INHERENT IN THIS TYPE OF ELECTRICITY GENERATION: One of the challenges envisaged during the investigation was based on the question “what happens at night” once the Sun is no longer available to produce warmth. The specific heat capacity of the lava is high enough to keep the steam maintained at superheat even with the source is removed. Specific temperature capacity is the capacity of a material to store heat and in the situation of molten lava they can shop heat for more than 8 hours depending on the quantity of the material in accordance with the quantity of steam required for the given process. In the case of inadequate material, another way will be to store excess electricity within chemical cells.

Another form of challenge is the almost the non availability of sunlight in winter. Unfortunately, this kind of challenge may not be surmountable but all the continents on the globe except European countries, have deserts and these areas may create a good resource for the nourishment of these type of endeavor. From simulations and extrapolations, it has been observed that a tenth of the Sahara desert may generate enough electricity for both present and future demands of all of the nations of the world.