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1. Adaptive neuro-fuzzy optimization of wind farm project net profit

Author:
Shamshirband, Shahaboddin; Petković, Dalibor; Ćojbašić, Žarko; Nikolić, Vlastimir; Anuar, Nor Badrul; Mohd Shuib, Nor Liyana; Mat Kiah, Miss Laiha; Akib, Shatirah
Source:
Energy conversion and management 2014 v.80 pp. 229-237
ISSN:
0196-8904
Subject:
fuzzy logic; power plants; wind farms; wind power; wind turbines
Abstract:
... A wind power plant which consists of a group of wind turbines at a specific location is also known as wind farm. To maximize the wind farm net profit, the number of turbines installed in the wind farm should be different in depend on wind farm project investment parameters. In this paper, in order to achieve the maximal net profit of a wind farm, an intelligent optimization scheme based on the ada ...
DOI:
10.1016/j.enconman.2014.01.038

2. Agent-based simulations of the influence of social policy and neighboring communication on the adoption of grid-connected photovoltaics

Author:
Murakami, Tomoyuki
Source:
Energy conversion and management 2014 v.80 pp. 158-164
ISSN:
0196-8904
Subject:
batteries; consumers (people); electric power; generators (equipment); group behavior; photovoltaic cells; public policy; solar collectors
Abstract:
... Agent-based simulations coupled with an analysis of the flow of electric power are carried out to examine the influence of the social policy of the government and the neighboring communication between customers on the adoption of distributed rooftop photovoltaic electrical power generators (PVs). How the relationships between the social policy and the possibility of a reverse current restriction g ...
DOI:
10.1016/j.enconman.2014.01.033

3. A hybrid wind-PV system performance investigation for the purpose of maximum hydrogen production and storage using advanced alkaline electrolyzer

Author:
Khalilnejad, A.; Riahy, G.H.
Source:
Energy conversion and management 2014 v.80 pp. 398-406
ISSN:
0196-8904
Subject:
algorithms; ambient temperature; electrochemistry; electrolysis; heat transfer; hydrogen; hydrogen production; models; solar radiation; wind speed; wind turbines; Iran
Abstract:
... In this study, design and modelling of hybrid wind–photovoltaic system is done for the purpose of hydrogen production through water electrolysis. Actual data for weekly solar irradiation, wind speed, and ambient temperature of Sahand, Iran, are used for performance simulation and analysis of the system examined. The detailed model of components is used. The 10kW alkaline electrolyzer model, which ...
DOI:
10.1016/j.enconman.2014.01.040

4. Analysis of the outdoor performance and efficiency of two grid connected photovoltaic systems in northern Italy

Author:
Micheli, Diego; Alessandrini, Stefano; Radu, Robert; Casula, Iosto
Source:
Energy conversion and management 2014 v.80 pp. 436-445
ISSN:
0196-8904
Subject:
buildings; environmental factors; light intensity; monitoring; profitability; silicon; simulation models; solar collectors; temperature; Italy
Abstract:
... This paper analyzes and compares the actual performance of two grid connected photovoltaic plants, which are of similar size but based on different modules technologies. The facilities are located on the roofs of two buildings of Area Science Park in the site of synchrotron ELETTRA in Basovizza (Trieste). The first system is equipped with modules of mono crystalline silicon wafer surrounded by ult ...
DOI:
10.1016/j.enconman.2014.01.053

5. A new model-based approach for power plant Tube-ball mill condition monitoring and fault detection

Author:
Guo, Shen; Wang, Jihong; Wei, Jianlin; Zachariades, Paschalis
Source:
Energy conversion and management 2014 v.80 pp. 10-19
ISSN:
0196-8904
Subject:
algorithms; biomass; coal; engineering; grinding; mathematical models; milling; monitoring; power generation; power plants; temperature; United Kingdom
Abstract:
... With the fast growth in intermittent renewable power generation, unprecedented demands for power plant operation flexibility have posed new challenges to the ageing conventional power plants in the UK. Adding biomass to coal for co-fired power generation has become widely implemented practices in order to meet the emission regulation targets. These have impacted the coal mill and power plant opera ...
DOI:
10.1016/j.enconman.2013.12.046

6. A novel self-powered wireless temperature sensor based on thermoelectric generators

Author:
Shi, Yongming; Wang, Yao; Deng, Yuan; Gao, Hongli; Lin, Zhen; Zhu, Wei; Ye, Huihong
Source:
Energy conversion and management 2014 v.80 pp. 110-116
ISSN:
0196-8904
Subject:
batteries; burning; temperature; thermoelectric generators
Abstract:
... A novel self-powered wireless temperature sensor has been designed and presented for solving the power supply problem of temperature sensors. This sensor can autonomously measure temperature under positive temperature fluctuation situations. The self-powered characteristic, realized by using four thermoelectric generators, enables the sensor to operate without any batteries or other power sources. ...
DOI:
10.1016/j.enconman.2014.01.010

7. A numerical investigation of reactant transport in a PEM fuel cell with partially blocked gas channels

Author:
Tiss, F.; Chouikh, R.; Guizani, A.
Source:
Energy conversion and management 2014 v.80 pp. 32-38
ISSN:
0196-8904
Subject:
fuel cells; mass transfer; mathematical models; porosity
Abstract:
... In this study, a numerical model was presented to investigate the mass transport in a PEM fuel cell with partial blocks inserted in the gas channel designed to progress reactant gas distribution in the gas diffusion layer. The effect of the partial blocks design, the gas diffusion layer porosity on the reactant gas transport and distribution were examined. In particular, the desirable gas channel ...
DOI:
10.1016/j.enconman.2013.12.063

8. A parametric study on the feasibility of solar chimney power plants in North Cyprus conditions

Author:
Okoye, Chiemeka Onyeka; Atikol, Uğur
Source:
Energy conversion and management 2014 v.80 pp. 178-187
ISSN:
0196-8904
Subject:
carbon dioxide; cost analysis; economic feasibility; economic investment; economic sustainability; electricity; electricity generation; emissions; fuel oils; nitrogen oxides; power plants; prediction; prices; prototypes; solar chimneys; sulfur oxides; viability; Cyprus; Spain
Abstract:
... The present work investigates the feasibility of installing a solar chimney power plant (SCPP) under North Cyprus (NC) conditions. The method utilized for the simulations of electricity production was compared and verified by the experimental recordings of the prototype in Manzanares, Spain, before carrying out performance predictions for different plant sizes, collector diameters and chimney heig ...
DOI:
10.1016/j.enconman.2014.01.009

9. Application of homotopy analysis method and inverse solution of a rectangular wet fin

Author:
Panda, Srikumar; Bhowmik, Arka; Das, Ranjan; Repaka, Ramjee; Martha, Subash C.
Source:
Energy conversion and management 2014 v.80 pp. 305-318
ISSN:
0196-8904
Subject:
algorithms; equations; heat transfer; heat transfer coefficient; mass transfer; temperature; thermal conductivity
Abstract:
... This paper presents the analytical solution of a rectangular fin under the simultaneous heat and mass transfer across the fin surface and the fin tip, and estimates the unknown thermal and geometrical configurations of the fin using inverse heat transfer analysis. The local temperature field is obtained by using homotopy analysis method for insulated and convective fin tip boundary conditions. Usi ...
DOI:
10.1016/j.enconman.2014.01.041

10. Application of zirconia modified with KOH as heterogeneous solid base catalyst to new non-edible oil for biodiesel

Author:
Takase, Mohammed; Zhang, Min; Feng, Weiwei; Chen, Yao; Zhao, Ting; Cobbina, Samuel J.; Yang, Liuqing; Wu, Xiangyang
Source:
Energy conversion and management 2014 v.80 pp. 117-125
ISSN:
0196-8904
Subject:
Fourier transform infrared spectroscopy; Silybum marianum; X-ray diffraction; adsorption; biodiesel; catalysts; catalytic activity; desorption; drying; fatty acid methyl esters; feedstocks; fluid mechanics; industry; iodine value; linoleic acid; lipid content; methanol; oils; oxidative stability; potassium hydroxide; scanning electron microscopy; temperature; thermogravimetry; transesterification; zirconium oxide
Abstract:
... This study seeks to investigate zirconia modified with KOH as heterogeneous solid base catalyst for transesterification of new non-edible, Silybum marianum (oil content 46%, FFA 0.68% and linoleic acid 65.68%) oil using methanol to biodiesel. Having screened the catalytic performance of ZrO2 loaded with different K-compounds, 32% KOH loaded on ZrO2 was chosen. The catalyst was prepared using incip ...
DOI:
10.1016/j.enconman.2014.01.034

11. A real time fuzzy logic power management strategy for a fuel cell vehicle

Author:
Hemi, Hanane; Ghouili, Jamel; Cheriti, Ahmed
Source:
Energy conversion and management 2014 v.80 pp. 63-70
ISSN:
0196-8904
Subject:
batteries; computer software; energy; fuel cells; fuzzy logic; vehicles (equipment)
Abstract:
... This paper presents real time fuzzy logic controller (FLC) approach used to design a power management strategy for a hybrid electric vehicle and to protect the battery from overcharging during the repetitive braking energy accumulation. The fuel cell (FC) and battery (B)/supercapacitor (SC) are the primary and secondary power sources, respectively. This paper analyzes and evaluates the performance ...
DOI:
10.1016/j.enconman.2013.12.040

12. A systems approach to reduce urban rail energy consumption

Author:
González-Gil, A.; Palacin, R.; Batty, P.; Powell, J.P.
Source:
Energy conversion and management 2014 v.80 pp. 509-524
ISSN:
0196-8904
Subject:
emissions; energy conservation; energy costs; energy efficiency; environmental performance; guidelines; rail transportation; renewable energy sources
Abstract:
... There is increasing interest in the potential of urban rail to reduce the impact of metropolitan transportation due to its high capacity, reliability and absence of local emissions. However, in a context characterised by increasing capacity demands and rising energy costs, and where other transport modes are considerably improving their environmental performance, urban rail must minimise its energ ...
DOI:
10.1016/j.enconman.2014.01.060

13. A technical and financial analysis of two recuperated, reciprocating engine driven power plants. Part 2: Financial analysis

Author:
Orbaiz, Pedro Jose; Brear, Michael J.
Source:
Energy conversion and management 2014 v.80 pp. 609-615
ISSN:
0196-8904
Subject:
biomass; combustion; cost effectiveness; electricity; finance; fossils; natural gas; pollution control; power generation; power plants; solar thermal energy
Abstract:
... This paper is the second of a two part study that analyses the technical and financial performance of particular, recuperated engine systems. This second paper examines the financial performance of two hybrid (renewable/fossil), chemically recuperated power plants. One of these plants uses the combustion of biomass as the renewable energy input. The other assumes that solar thermal energy is used. ...
DOI:
10.1016/j.enconman.2013.11.052

14. A technical and financial analysis of two recuperated, reciprocating engine driven power plants. Part 1: Thermodynamic analysis

Author:
Orbaiz, Pedro Jose; Brear, Michael J.
Source:
Energy conversion and management 2014 v.80 pp. 598-608
ISSN:
0196-8904
Subject:
biofuels; biomass; burning; carbon dioxide; combustion; energy; finance; greenhouse gas emissions; heat; internal combustion engines; methane; natural gas; power generation; power plants; temperature; wastes
Abstract:
... This paper is the first of a two part study that analyses the technical and financial performance of particular, recuperated engine systems. This first paper presents a thermodynamic study of two systems. The first system involves the chemical recuperation of a reciprocating, spark ignited, internal combustion engine using only the waste heat of the engine to power a steam–methane reformer. The pe ...
DOI:
10.1016/j.enconman.2013.11.051

15. Biodiesel production from Jatropha curcas: Integrated process optimization

Author:
Huerga, Ignacio R.; Zanuttini, María Soledad; Gross, Martín S.; Querini, Carlos A.
Source:
Energy conversion and management 2014 v.80 pp. 1-9
ISSN:
0196-8904
Subject:
Jatropha curcas; algae; alternative crops; biodiesel; biogas; energy; free fatty acids; fuel production; glycerol; lignocellulose; neutralization; oils; phosphorus; raw materials; water content; Argentina
Abstract:
... Energy obtained from renewable sources has increased its participation in the energy matrix worldwide, and it is expected to maintain this tendency. Both in large and small scales, there have been numerous developments and research with the aim of generating fuels and energy using different raw materials such as alternative crops, algae and lignocellulosic residues. In this work, Jatropha curcas p ...
DOI:
10.1016/j.enconman.2013.12.058

16. Comparison of the externally heated air valve engine and the helium Stirling engine

Author:
Kazimierski, Zbyszko; Wojewoda, Jerzy
Source:
Energy conversion and management 2014 v.80 pp. 357-362
ISSN:
0196-8904
Subject:
air; blowers; heat exchangers; helium; temperature
Abstract:
... A two-stroke, externally heated valve engine (EHVE) with a heater, a cooler and two blowers is simulated. The engine is entirely different from a typical Stirling engine. The pressure ratio pmax/pmin of its cycle is higher, but the engine volume and the mean value of the heat exchanger wall temperatures are the same. The power and efficiency of the EHVE and Stirling engines under the same maximum ...
DOI:
10.1016/j.enconman.2013.12.055

17. Design and operation of a tri-generation system for a station in China

Author:
Zhao, Xiling; Fu, Lin; Li, Feng; Liu, Hua
Source:
Energy conversion and management 2014 v.80 pp. 391-397
ISSN:
0196-8904
Subject:
absorption; energy conservation; energy efficiency; exergy; heat exchangers; heat pumps; internal combustion engines; primary energy; railroads; summer; winter; China
Abstract:
... Tri-generation usually refers to the simultaneous production of power, heating and cooling. Tri-generation can be regarded as a high-efficiency technology, provided that a large proportion of the energy rejected by the prime mover is used. In this paper, the design and operation of a tri-generation system for a railway station was investigated.The system is composed of the internal combustion engi ...
DOI:
10.1016/j.enconman.2014.01.019

18. Discussion on the applicability of entropy generation minimization and entransy theory to the evaluation of thermodynamic performance for heat pump systems

Author:
Cheng, XueTao; Liang, XinGang
Source:
Energy conversion and management 2014 v.80 pp. 238-242
ISSN:
0196-8904
Subject:
entropy; exergy; heat flow; heat pumps; temperature
Abstract:
... Based on the entropy generation minimization and entransy theory, we discuss the applicability of the concepts of entropy generation rate, entropy generation number, revised entropy generation number, exergy efficiency, entransy increase rate, entransy increase coefficient and entransy efficiency to the analyses of heat pump systems in this paper. The theoretical analyses show that all the concept ...
DOI:
10.1016/j.enconman.2014.01.008

19. Drying kinetics of RDX under atmospheric pressure and vacuum conditions

Author:
Zhang, Yaoxuan; Chen, Houhe; Chen, Teng
Source:
Energy conversion and management 2014 v.80 pp. 266-275
ISSN:
0196-8904
Subject:
activation energy; atmospheric pressure; diffusivity; drying temperature; models; regression analysis; thin-layer drying
Abstract:
... The drying characteristics of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) are investigated in the ranges of 60–90°C of drying temperature under atmospheric pressure and vacuum conditions in a laboratory scale dryer. The effect of drying temperature and absolute pressure on the drying characteristics is determined. In order to estimate and select the suitable form of RDX drying curves, the curves ...
DOI:
10.1016/j.enconman.2014.01.039

20. Dynamic performance assessment of a micro-trigeneration system with a desiccant-based air handling unit in Southern Italy climatic conditions

Author:
Angrisani, Giovanni; Roselli, Carlo; Sasso, Maurizio; Tariello, Francesco
Source:
Energy conversion and management 2014 v.80 pp. 188-201
ISSN:
0196-8904
Subject:
air; air conditioning; carbon dioxide; climatic factors; computer software; cooling systems; dehumidification; desiccants; electric energy consumption; electricity; emissions; heat; laws and regulations; models; natural gas; primary energy; silica gel; summer; thermal energy; winter; Italy
Abstract:
... In this work, a system consisting of a small scale trigeneration system, in which a heat-led microcogenerator interacts with a desiccant-based cooling system, equipped with a silica-gel desiccant wheel, is analyzed. The system provides the air-conditioning service to a lecture room during summer and winter periods and, over the whole year, thermal energy for domestic hot water production to a near ...
DOI:
10.1016/j.enconman.2014.01.028