International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
CONCENTRATED SOLAR POWER PLANT Krunal H. Siyatar1, Ankita A. chavda2, Kirti J. Vasaniya3 Rahul B. Chandegara4 1UG
Student in Electrical Engineering, DSTC, Junagadh, Gujarat, India Student in Electrical Engineering, DSTC, Junagadh, Gujarat, India 3UG Student in Electrical Engineering, DSTC, Junagadh, Gujarat, India 4Asst. Prof. Dept. Of Electrical Engineering, DSTC,Junagadh, Gujarat, India ---------------------------------------------------------------------***------------------------------------------------------------------2UG
Abstract – Concentrating solar power is electricity generated from mirrors to focus sunlight on to receiver that captures the sun’s energy and converts it into heat that can run a standard turbine generator or engine. CSP system range from remote power systems as small as a few kilowatts up to grid-connected power plants of 100’s of megawatts. CSP produces electricity by concentrating the sun’s rays to heat a liquid, solid or gas that is then used in a downstream process to generate electricity. A CSP plant consists of a solar concentrator system made of a receiver and collector to produce heat, and a power block. Keywords : Electricity , heliostate , reflector , heat transfer , solar heating , fluids , batteries. 1. INTRODUCTION
Concentrating solar power (CSP) technologies use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. Power generated by using different methods in CSP plant. This thermal energy can then be used to produce electricity via steam turbine or heat engine that drives the generator. The sunlight hits the earth’s surface both directly and indirectly, through numerous reflections and deviations in the atmosphere. On clear days, the direct irradiance represents 80 to 90 % of solar energy reaching the earth’s surface. On a cloudy or foggy day, the direct component is essentially zero. Unlike , photovoltaic cells or flat plate solar collectors, CSP power plant cannot use diffuse part of solar irradiation which result from scattering of direct sun light by clouds, particles, or molecules in the air, because it cannot be concentrated. However, one of the key benefits of choosing CSP over PV is be that CSP plants can more easily provide ancillary services and provide dispatch able power on-demand using long-term storage. © 2017, IRJET
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Impact Factor value: 5.181
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In 2005, Concentrated Solar Power generated a mere 0.025% of global electricity. However, the concentrated solar power energy sector is growing quickly. 1.1 WHY CONCENTRATED SOLAR POER IS USED?
Concentrating solar power (CSP) plants use mirrors to concentrate the energy from the sun to drive traditional steam turbines or engines that create electricity. The thermal energy concentrated in a CSP plant can be stored and used to produce electricity when it is needed, day or night. For large-scale CSP plants, the concentration is most commonly by reflection by mirrors, rather than by refraction with lenses. The sun’s rays are concentrated either to a line (linear focus, as in trough or linear Fresnel systems) or to a point (point focus, as in central receiver or dish systems). With photovoltaic energy prices dropping and concentrated solar power (CSP) towers operating at higher temperatures. There are four main utility scale CSP designs currently in use: parabolic troughs, tower systems, linear troughs and parabolic dishes. Over 90% of the generation capacity in installed CSP is in parabolic troughs, but many in the solar industry speculate that tower systems will become more widely used in the future.Within the United States, CSP plants have been operating reliably for more than 15 years. , the use of salts in CSP trough plants is being investigated to lower operating costs. All CSP technological approaches require large areas for solar radiation collection when used to produce electricity at commercial scale.CSP technology utilizes three alternative technological approaches: trough systems, power tower systems, and dish/engine systems. ISO 9001:2008 Certified Journal
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