Rakesh Singhai | Shiv Nadar University (original) (raw)
Mechanical engineer with industry and academic experience
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Papers by Rakesh Singhai
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
Concentrated solar power tower (CSPT) technology coupled with molten salt thermal storage is a ve... more Concentrated solar power tower (CSPT) technology coupled with molten salt thermal storage is a very promising approach to harness solar energy as it offers good efficiency along with cheap storage ...
Arabian Journal for Science and Engineering
The solar power tower plant consists of thousands of heliostats and heliostat field cost contribu... more The solar power tower plant consists of thousands of heliostats and heliostat field cost contributes nearly 40-50% of the total plant cost. This makes cost of heliostat as an important parameter while designing solar power tower plant. Wind loading is the crucial parameter to be considered for the sizing and costing of a heliostat. The size of the reflector area and aspect ratio of heliostat have significant influence on the wind loads impacting its various components. An analysis of heliostat cost using its reflector area and the aspect ratio as variable parameters illustrates that heliostat cost per unit area can be minimized by distributing costs into various categories having different cost dependencies on area as well as aspect ratio. Using the component wise cost breakup of 148 m2 ATS heliostat as a reference, optimum area and aspect ratio of heliostat are determined parametrically. A hypothetical power tower plant with 50MW capacity and 6 hours of thermal energy storage is simulated with heliostat fields comprising of heliostats built with various aspect ratios and corresponding optimum reflector area. The results indicate that it is not only more economical to build heliostats with aspect ratio of around 2, but also such heliostat fields deliver higher optical efficiency on an annualized basis.
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
Concentrated solar power tower (CSPT) technology coupled with molten salt thermal storage is a ve... more Concentrated solar power tower (CSPT) technology coupled with molten salt thermal storage is a very promising approach to harness solar energy as it offers good efficiency along with cheap storage ...
Arabian Journal for Science and Engineering
The solar power tower plant consists of thousands of heliostats and heliostat field cost contribu... more The solar power tower plant consists of thousands of heliostats and heliostat field cost contributes nearly 40-50% of the total plant cost. This makes cost of heliostat as an important parameter while designing solar power tower plant. Wind loading is the crucial parameter to be considered for the sizing and costing of a heliostat. The size of the reflector area and aspect ratio of heliostat have significant influence on the wind loads impacting its various components. An analysis of heliostat cost using its reflector area and the aspect ratio as variable parameters illustrates that heliostat cost per unit area can be minimized by distributing costs into various categories having different cost dependencies on area as well as aspect ratio. Using the component wise cost breakup of 148 m2 ATS heliostat as a reference, optimum area and aspect ratio of heliostat are determined parametrically. A hypothetical power tower plant with 50MW capacity and 6 hours of thermal energy storage is simulated with heliostat fields comprising of heliostats built with various aspect ratios and corresponding optimum reflector area. The results indicate that it is not only more economical to build heliostats with aspect ratio of around 2, but also such heliostat fields deliver higher optical efficiency on an annualized basis.