Renewable energy can help developing countries meet their sustainable development goals through access to clean, secure, reliable and affordable energy. The scarcity and the depletion of conventional energy resources, with rising fuel prices and harmful emissions from fossil fuels, make...

This paper investigates the possible site matching of the direct-drive wind turbine concepts based on the electromagnetic design optimization of permanent magnet (PM) generator systems. Firstly, the analytical models of a three-phase radial-flux PM generator with a back-to-back power converter...

This work represents the Photovoltaic section of the European Project PERSIL, which includes also the study of solar thermal plants. The activity is twofold: the results of 1-year monitoring and checking of thirteen PV systems; the consequent guidelines for the design, installation and...

The new engineering FASTLognoter software is presented. This code is essentially the result of the integration of two tools, along with some additional features. The first basis tool is FAST (developed by NREL), a comprehensive aeroelastic simulator code for wind turbines. The second basis tool...

In the present work, the performance of an updraft gasifier was investigated experimentally and numerically. This study aimed to use a two-dimensional model using a code, namely COMMENT code, to investigate the gasification and combustion processes while taking into consideration the process...

A domestic solar dryer with transparent external surfaces was designed, built and tested. Thin-layer drying models that describe the drying phenomena in a unified way, regardless of the controlling mechanism; have been used to estimate the drying period for several products. Temperature of the...

The purpose of this paper is to investigate both environmental effects and cost effects of using less specified contracts regarding bus sizes in public bus transports. The process of choosing the best bid in the public procurement of bus transports is easier if the demands of the qualifications...

Accurate modelling is crucial in designing an optimum system. Wind speed distribution of selected site, hub height and power output curve of chosen wind turbine, are the main factors which influence the performance of wind turbines, and therefore, these must be properly accounted for during...

Jet impingement has been verified as an effective method to enhance convective heat transfer. To make better use of this effect, vacuum glazed transpired solar collector with slit-like perforations is developed. In this paper, a mathematical model based on energy balance equations for the solar...

Using the data for global and diffuse radiation in Tainan, Taiwan, for the years of 2011 and 2012, respectively, four correlation models with five predictors: the hourly clearness index (kt), solar altitude, apparent solar time, daily clearness index and a measure of persistence of global...