Abstract
Electricity generation using solar thermal power systems can be made more efficient and both technically and economically feasible in countries receiving moderate solar radiation like Bangladesh through thorough optimization of different parts of the power plant. In this paper a theoretical and mathematical framework for optimization of a 150 MW solar tower thermal power plant in Bangladesh which uses molten salt as HTF has been developed by applying different methods of selecting crucial design aspects, such as design point DNI, solar multiple, design point temperature etc. after selecting the most appropriate location based on GHI and DNI data. The effect of these design aspects on the overall design of the power plant including the number of heliostats, solar field land area, tower height, receiver dimensions etc. have also been studied and finally the performance analysis of the power plant has been conducted. Analysis of performance reveals that the optimized power plant would be able to deliver 528.66 GW-h electricity annually to the national grid while operating at a capacity factor of 40.2% and gross-net conversion efficiency of 88.635%. The promising performance of the power plant would encourage further research and innovation regarding large scale electricity generation from solar energy in Bangladesh.
Highlights
Fossil fuels, including coal, oil and natural gas, are currently the world's primary energy source
For solar tower thermal power plant choosing the design point Direct Normal Irradiance (DNI) based on this criterion gives the best result[23]
An attempt was taken to optimize the heliostat field based on the key design points such as design point DNI, solar multiple and design point temperature
Summary
Fossil fuels, including coal, oil and natural gas, are currently the world's primary energy source. Among all renewable energy resources, solar energy is the most appreciated one as it is boundless and may effortlessly be converted into electrical power[1].solar energy is free of cost and nature-friendly. People can harness the sun's energy using two different methods which are solar photovoltaic and concentrated solar power (CSP). CSP technologies utilize focused sunlight to produce energy that can be used to generate electricity. Power produced by CSP technologies are stable, pristine and nature-friendly[2]. Though brisk advancement took place in the basic structure and market strategies of CSP technologies, capital cost of electricity production seems to be quiet high as power generation is low. Great endeavors have to be concentrated on research works for increasing the generation of power in developing the CSP technologies[3]
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