The concentrated solar power plant or solar thermal power plant generates heat and electricity by concentrating the sun''s energy. That, in turn, builds steam that helps to feed a turbine and generator to produce electricity.
This overview will focus on the central receiver, or "power tower" concentrating solar power plant design, in which a field of mirrors - heliostats, track the sun throughout the day and year to
In power tower concentrating solar power systems, several flat, sun-tracking mirrors focus sunlight onto a receiver at the top of a tall tower is used in a conventional turbine generator to
Solar power plants are systems that use solar energy to generate electricity. They can be classified into two main types: photovoltaic (PV) power plants and concentrated solar power (CSP) plants. Photovoltaic power
A solar power tower, also known as 'central tower' power plant or ' heliostat ' power plant, is a type of solar furnace using a tower to receive focused sunlight. It uses an array of flat, movable mirrors (called heliostats) to focus the sun's rays upon a collector tower (the target).
Solar power tower is composed of several heliostats, tower with top situated receiver with the working fluid and the generator of the electrical energy. Heliostats are composed of several flat mirrors that focus concentrated sun irradiation onto the receiver. Each heliostat has its own mechanism for Sun tracking along two axis.
The working temperature of these systems reaches to 800 °C in which sunlight can be concentrated 600-1000 times. A schematic diagram of a solar tower power plant is shown in Fig. 4. The high temperature achieved by this technology gives it the flexibility to drive different types of power cycles including steam Rankine and Brayton cycles.
Power tower or central receiver systems utilize sun-tracking mirrors called heliostats to focus sunlight onto a receiver at the top of a tower. A heat transfer fluid heated in the receiver up to around 600ºC is used to generate steam, which, in turn, is used in a conventional turbine-generator to produce electricity.
Solar towers have the highest requirement of approximately 45 m 2/kW, in the case where no thermal storage is integrated. Many solar thermal power projects are currently in the pipeline (mainly in Spain) including plants using storage and ISCC plants (mainly in Morocco, Algeria and Spain).
In summary, the power tower concentrating solar power plant, at the heart of which lies the heliostat, is a very promising area of renewable energy. Benefits include high optical concentration ratios and operating temperatures, corresponding to high efficiency, and an ability to easily incorporate thermal energy storage.
