R. M. Oranrejawu; O. W. Olatunji; G. P. Akpan
Abstract
Abstract Hydro Electric Power (H.E.P.) is a critical infrastructure that powers industrial growth and economic development of any developing nation. However, variability in climatic condition is already having serious impacts on H.E.P. in Nigeria. The study examined the effect of climate variability ...
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Abstract Hydro Electric Power (H.E.P.) is a critical infrastructure that powers industrial growth and economic development of any developing nation. However, variability in climatic condition is already having serious impacts on H.E.P. in Nigeria. The study examined the effect of climate variability on hydroelectric power generation in Shiroro Station Nigeria. Data used for this study were acquired mainly from secondary source. The climatic, Hydrological and power generation data used are already prepared document from 1990 to 2014 (25 years) period. The data were sourced directly from the production and Hydrological department of North South Power (N.S.P.). Relevant literature, journals and internet materials were also used for the study. Data collected were subsequently analyzed using inferential statistics such as trend analysis, reduction pattern analysis, spearman rank correlation and multiple regression analysis. Result revealed that there is variability in climatic elements and hydrological variables from year to year. Multiple linear regression analysis revealed that climatic/hydrological variables can only explained 75.40% variability in the amount of hydro power generated in Shiroro Station. The study calls for the development of pumped water systems so that the tail water can be reused particularly during periods of little or no rainfall and low inflow.
B. Mohammed; M. Abderrezak; M. Feidt
Abstract
Parabolic trough power plants have been developed on several concepts for production of renewable energy in integrated solar combined cycle system (ISCCS) and direct steam generation (DSG). Each concept has their characteristic due to solar energy configuration. Recently, technology for Solar aided power ...
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Parabolic trough power plants have been developed on several concepts for production of renewable energy in integrated solar combined cycle system (ISCCS) and direct steam generation (DSG). Each concept has their characteristic due to solar energy configuration. Recently, technology for Solar aided power generation (SAPG) is appeared for optimization of these concepts by solar contribution system in hybrid power plants. The aim of this work is thermodynamic analysis on solar hybrid power plants system for ISCCS and DSG concepts. For these concepts, we evaluated the main differences in solar efficiency to electrical power. The solar aided power generation was proposed for evaluating the solar contribution in DSG concept. The study shows that the share of solar contribution in DSG concept is high, for the best method on thermal solar extraction in the DSG concept. Therefore, the optimum value of solar extraction is to preheat the feed water in the heater.These models were evaluated in this work which is simulated on TRNSYS software and System Advisor Model (SAM). The analysis in performance of hybrid concepts and solar contribution in new DSG concept can be evaluated. It was found the best method is solar contribution in the solar hybrid power plants.