Mathematical Modeling of Solar Radiation Mapping and its Validation
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Date
2019
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Abstract
Detailed knowledge of solar radiation is of fundamental importance in
meteorology. The appropriate design of many solar power plants requires a detailed
knowledge of solar radiation availability. In India 45 solar radiation stations are available
in India for measuring solar radiation. The development of calculation procedures is
required to provide radiation estimates for areas where measurements are not carried
out.This is where solar radiation modeling and solar mapping plays an important role
which avoids setting up a large number of ground stations throughout the country, which
is an expensive proposition.Therefore in this study solar maps were generated to perform
theoretical potential of solar energy for a specific region providing information that is
useful for site selection of solar energy system.On the basis of solar irradiation values for
Udaipur,design and assessment of 1 MW solar PV as well as solar thermal power plant is
done. Land requirement for both plants is calculated.
On the basis of maps generated, for clear sky,maximum diffuse irradiation is
recorded as 1.45 kWh m-2day-1 while minimum recorded is 0.05 kWh m-2day-1. Range of
Global Irradiation for India lies between 6 - 7.15 kWh m-2day-1. Maximum potential of
direct irradiation is 6 kWh/m2/day while minimum direct irradiation is 4.5 kWh m-2day-
1.From the mapping of DNI for clear sky conditions it is noticed that most part of country
receives an average of 6.8-8.4kWhm-2day-1.
The land required for designed solar field in case of solar thermal power plant and
solar PV systems is 6.3 Acresand 5.18 Acres respectively.LCOE for SPV and solar
thermal power plant came out to be Rs. 2.51 and Rs. 6.43 respectively. Payback period
for SPV and Solar parabolic trough system came out to be 7.27 and 3.91 respectively.
IRR for SPV and Solar parabolic trough system came out to be 14.88 % and 28 %
respectively.
Thus the use of solar energy for meeting the electricity will eliminate or reduce
substantial use of fossil fuel and bring down CO2 emission reduction into the
environment.
Description
Mathematical Modeling of Solar Radiation Mapping and its Validation
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Rathore N.