Showing papers in "Renewable Energy in 2003"

TL;DR: In this paper, the effect of temperature on the viscosity of biodiesel and jatropha oil was studied and the performance of a single cylinder C.I. engine using blends of varying proportions of Jatropha curcas oil and diesel was evaluated.

TL;DR: In this paper, the influence of temperature and wavelength on electrical parameters of crystalline silicon solar cells and a solar module is presented, and the spectral characteristic of the open-circuit voltage of the single-crystalline silicon polysilicon solar cell is also presented.

TL;DR: The authors show an application of the multicriteria decision-making methodology used to assess an action plan for the diffusion of renewable energy technologies at regional scale, carried out for Sardinia.

TL;DR: An applicable group decision-making framework for assisting with multi-criteria analysis in renewable energy projects, utilizing the PROMETHEE II outranking method is described, providing a user-friendly approach, promotes the synergy between different actors, and could pave a way towards consensus.

TL;DR: A complete set of match calculation method for optimum sizing of a PV/wind hybrid system is presented in this paper, where more accurate mathematic models for characterizing components as well as models for estimating the available natural resources are adopted.

TL;DR: In this article, the effects of pyrolysis temperature, heating rate, particle size and sweep gas flow rate on the product yields and their chemical compositions were investigated on a sample of rapeseed.

TL;DR: In this article, a simulation model for analyzing the probability of power supply failure in hybrid photovoltaic-wind power generation systems incorporating a storage battery bank, and also analyzes the reliability of the systems.

TL;DR: In this article, a two-stage procedure for estimating wind resource is proposed, where the yearly wind speed distribution and wind power density for the entire Taiwan is firstly evaluated to provide annually spatial mean information of wind energy potential.

TL;DR: In this paper, the authors compared renewable energy sources with non-renewable energy sources on the basis of efficiency, and the actual use of energy from the existing available energy is discussed.

TL;DR: In this paper, the Weibull density function has been used to estimate the wind energy potential in Grenada, West Indies, based on historic recordings of mean hourly wind velocity.

TL;DR: In this article, the authors review the fundamental issues that are likely to play a major role in implementation of MCT systems and highlight research areas to be encountered in this new area.

TL;DR: In this paper, the authors present an energy system analysis model EnergyPLAN, which has been used to analyse the integration of large scale wind power into the national Danish electricity system.

TL;DR: In this paper, the authors present the results of experimental work carried out to evaluate the exhaust emissions characteristics of ordinary Malaysian coconut oil (COCO) blended with conventional diesel oil (OD) fueled in a diesel engine and found that the addition of 30% COCO with OD produced higher brake power and net heat release rate with a net reduction in exhaust emissions such as HC, NOx, CO, smoke and polycyclic aromatic hydrocarbon (PAH).

TL;DR: In this article, field level experiments on solar drying of pineapple using solar tunnel drier were conducted at Bangladesh Agricultural University, Mymensingh, Bangladesh, where the drier consists of a transparent plastic covered flat plate collector and a drying tunnel connected in a series to supply hot air directly into the drying tunnel using two dc fans operated by a solar module.

TL;DR: In this paper, the authors used a cylindrical PCM module at the top of the water tank to give the system higher storage density, and compensate heat loss in the top layer.

TL;DR: In this article, the thermal stability of some fatty acids as phase change materials (PCMs) was investigated and the results showed that they have good thermal stability as a function of latent heat and phase transition temperature range for an actual middle-term thermal energy storage utility.

TL;DR: The development of a computer-based system for RES systems monitoring is described, which consists of a set of sensors for measuring both meteorological and electrical parameters and can be easily extended for controlling the RES system operation.

TL;DR: In this paper, exhaust emission tests were conducted on rapeseed oil methyl ester (RME), RME and fossil diesel fuel as well as on their mixtures, and the results showed that when considering emissions of nitrogen oxides (NOx), carbon monoxide (CO) and smoke density, RME had less negative effect on the environment in comparison with that of RME.

TL;DR: In this paper, the heating requirements of the thermophilic anaerobic digestion process were studied in laboratory experiments at retention times from 1 to 10 days and the data gathered in the experiments was then used to perform a heat and energy analysis.

TL;DR: In this paper, the effect of increasing fuel inlet temperature on viscosity and performance of a single cylinder, unmodified diesel engine was evaluated, and the overall results showed that fuel heating increased peak cylinder pressure and was also beneficial at low speed and under part-load operation.

TL;DR: In this paper, the authors proposed to assess wind power cost per kWh of electricity produced using three types of wind electric conversion systems at 20 locations within the Kingdom of Saudi Arabia, covering the eastern, central, and western regions.

TL;DR: Reference LPM-ARTICLE-2003-006View record in Web of Science Record created on 2006-06-22, modified on 2016-08-08 as discussed by the authors, created on 2007-07-08

TL;DR: In this article, the authors describe a hybrid energy system consisting of a 5 kW wind turbine and a fuel cell system, which is expected to be a more efficient, zero emission alternative to wind diesel system.

TL;DR: In this article, a thermoelectric generator (TEG) consisting of several commercially available low-cost Peltier modules is proposed to produce maximum power in a simple and cheap manner.

TL;DR: In this paper, the authors proposed that Turkey's reliance on fossil fuel-based energy systems to meet the growing demand is most likely to exacerbate the issues of energy insecurity, national environmental degradation and global climate change in increasing proportions.

TL;DR: In this article, the authors presented a comprehensive wind atlas of the Province of Quebec using the scheme proposed by the Battelle-Pacific Northwest Laboratory (PNL), which is a numerical one which includes rankings from wind power Class 1 (lowest) to wind Power Class 7 (highest).

TL;DR: In this article, a static fixed bed reactor was used to determine the effect of process variables such as temperature, heating rate, inert sweep gas flow rate and particle size on the yield and composition of solid product char.

TL;DR: In this article, different approaches to groundwater flow and its effect in the vicinity of a borehole ground heat exchanger are discussed and the results indicate that groundwater flow in fractures even at relatively low specific flow rates may cause significantly enhanced heat transfer, although a continuum approach with the same basic assumptions would suggest otherwise.

TL;DR: In this paper, a stand-alone photovoltaic power system is designed to operate residential appliances such as fluorescent lamp, incandescent light and ceiling fan using standard methods.