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Modelling and optimization of transparent parabolic trough collector based on gas-phase nanofluids
de Risi, A.; Milanese, M.; Laforgia, D. - In: Renewable Energy 58 (2013) C, pp. 134-139
The Parabolic Trough Collector (PTC) is the most common type of high-temperature solar thermal technology, in which the heat transfer fluid is usually synthetic oil, molten salt or water/steam. Experiences in existing plants have shown some operating problems with all these types of fluid, which...
Persistent link: https://www.econbiz.de/10010803625
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Dimethyl carbonate mediated production of biodiesel at different reaction temperatures
Dawodu, Folasegun A.; Ayodele, Olubunmi O.; Xin, Jiayu; … - In: Renewable Energy 68 (2014) C, pp. 581-587
Methanol was replaced by dimethyl carbonate for biodiesel production. In the process, fatty acid methyl ester (FAME) was produced through transesterification of soybean oil with dimethyl carbonate (DMC) using potassium methoxide as a catalyst. This method produced a more attractive by-product,...
Persistent link: https://www.econbiz.de/10010803693
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Optimization of a solar-assisted drying system for drying bananas
Smitabhindu, R.; Janjai, S.; Chankong, V. - In: Renewable Energy 33 (2008) 7, pp. 1523-1531
optimization model consists of a simulation model of a solar-assisted drying system combined with an economic model. The simulation … simulation model was used for the optimization of the solar-assisted drying system. An economic model was formulated to calculate … the annual drying cost. The optimization problem was defined as the optimization of the geometry and operational …
Persistent link: https://www.econbiz.de/10010803726
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Optimal placement of wind turbines in a wind park using Monte Carlo simulation
Marmidis, Grigorios; Lazarou, Stavros; Pyrgioti, Eleftheria - In: Renewable Energy 33 (2008) 7, pp. 1455-1460
’. The optimization is made by the mean of maximum energy production and minimum cost installation criteria. As a test case …
Persistent link: https://www.econbiz.de/10010803737
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Performance optimization of a photovoltaic induction motor pumping system
Betka, A; Moussi, A - In: Renewable Energy 29 (2004) 14, pp. 2167-2181
by the optimization of the motor efficiency is described in this paper. The results obtained are compared with those of …
Persistent link: https://www.econbiz.de/10010803770
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Exergetic optimization of flat plate solar collectors
Farahat, S.; Sarhaddi, F.; Ajam, H. - In: Renewable Energy 34 (2009) 4, pp. 1169-1174
In this paper, an exergetic optimization of flat plate solar collectors is developed to determine the optimal … in the previous literature. Finally, the exergetic optimization has been carried out under given design and operating …
Persistent link: https://www.econbiz.de/10010803825
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Design improvements for a collector/generator/adsorber of a solid adsorption solar refrigerator
Ogueke, N.V.; Anyanwu, E.E. - In: Renewable Energy 33 (2008) 11, pp. 2428-2440
, optimization was then carried out. Improvements in the ranges of 29–38% for COP and 26–35% for condensate yield were obtained with …
Persistent link: https://www.econbiz.de/10010804048
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Optimization study of integration strategies in solar aided coal-fired power generation system
Zhai, Rongrong; Peng, Pan; Yang, Yongping; Zhao, Miaomiao - In: Renewable Energy 68 (2014) C, pp. 80-86
standard of the solar aided coal-fired power plant, and then based on this standard an optimization of this system is applied … by the genetic algorithm model. According to the optimization research of this system, a series of parameters such as the …
Persistent link: https://www.econbiz.de/10010804074
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A fast algorithm based on the submodular property for optimization of wind turbine positioning
Changshui, Zhang; Guangdong, Hou; Jun, Wang - In: Renewable Energy 36 (2011) 11, pp. 2951-2958
In the design of a wind farm, the placement of turbines is an important factor that affects the efficiency and profit, but automatic placement of turbines is still a challenging problem.
Persistent link: https://www.econbiz.de/10010804085
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Economic optimization and sensitivity analysis of photovoltaic system in residential buildings
Ren, Hongbo; Gao, Weijun; Ruan, Yingjun - In: Renewable Energy 34 (2009) 3, pp. 883-889
This paper deals with the problem of optimal size of grid-connected photovoltaic (PV) system for residential application. It is assumed the PV system can input or output liberally the electricity to the utility electricity grid. A simple linear programming model is developed. The objective is to...
Persistent link: https://www.econbiz.de/10010804101