Comparative Techno-Economic Study of Solar Thermal Power Plants with Various Capacities: A Case for the Northern Part of Cameroon
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Tarih
2020
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info:eu-repo/semantics/openAccess
Özet
Cameroon, located in the Sub-Saharan Africa, has a good direct normal irradiation value of about 2145 kWh/m2/year, but it has a population living with less than 10% electrification rate in the rural area. The purpose ofthis study is to evaluate the commercial use of three different solar thermal power technologies (Parabolictrough collector, PTC; Solar Tower, ST; Linear Fresnel, LF) with various capacities (5 MWe, 10 MWe, 50 MWe,100 MWe) in the northern part of Cameroon. A techno-economic analysis which uses technical, economicand financial parameters is conducted for each technology, so it is able to give options to investors/designersfor evaluating such kind of technologies. In this study, some parameters such as total annual direct normalirradiation (DNI) values received by solar field, thermal output of the solar field, thermal system transfer rate,overall energy efficiency and annual electricity production are considered for the technical analysis. Also,economic and financial results such as payback period (PBP), internal rated return (IRR), net present value (NPV)and levelized cost of electricity (LCOE) are found out during the economic analysis. Moreover, environmentaland social impact assessment (ESIA) study is considered as a key parameter for multi-criteria decision analysis.It is obtained that costs per kW for the solar thermal power plants vary between 4550-6745 USD, 5240-9365USD and 5100-6290 USD for PTC, ST and LF, respectively. Levelized cost of electricity values are calculatedbetween 10.22-13.22 USDcents/kWh, 11.07-19.81 USDcents/kWh and 14.63-15.60 USDcents/kWh for PTC,ST and LF technologies, respectively. ST technology is not efficient compared to others for less than 10 MWedue to its high initial investment cost. It is important to note that cost per kW in the sub-Saharan region is highbecause of high transportation fees, lack of solar thermal manufactures for insulation-piping systems and metalstructures, and high indirect costs such as engineering, procurement, construction and advanced ESIA services.Financial support mechanisms for such technologies such as tax exemptions, incentives and subventions basedon carbon pricing approach can decrease considerably both payback periods and total costs of the systems, andcontribute to developing the sector by creating an attractive solar thermal power market.
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Kaynak
European Mechanical Science
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Cilt
4
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1
