Showing papers in "Renewable Energy in 1995"

TL;DR: In this article, the statistical data of fifty days' wind speed measurements at the MERC-solar site are used to find out the wind energy density and other wind characteristics with the help of the Weibull probability distribution function.

TL;DR: The Jatropha seed was extracted by solvent extraction with petroleum ether and the oil yield was 374% on a whole seed basis and 460-486% from the kernel as discussed by the authors.

TL;DR: In this article, wind data collected at ten stations in Malaysia were analysed for wind energy potential and the results were presented as a Weibull distribution and analysis indicated that the station at Mersing has the greatest potential, with a mean power density of 8561 W/m2 at 10 m above sea level.

TL;DR: In this paper, 20 methods of determining the solar cell series resistance R s are reviewed and the authors assess 12 of them using a commercial single-crystal silicon solar cell (785 cm 2 total area).

TL;DR: In this article, an adaptive maximum power point tracking (MPPT) strategy was proposed to implement an efficiency maximization loop in parallel with the regular maximum tip speed ratio tracker, without the measurement of mechanical quantities.

TL;DR: In this article, three different types of solar dryers based on the principle of natural as well as forced convection were investigated. And the most appropriate design to be used on a household, farm or industrial scale.

TL;DR: Using existing and new empirical model equations to analyse available data for nine stations located in different geographical and climatic zones in Nigeria, it was clearly demonstrated that maximum air temperature is an important climatological parameter which should be used in solar radiation modelling in Nigeria as discussed by the authors.

TL;DR: In this paper, the theoretical aspects of choosing a tilt angle for the solar flat-plate collectors used in Cyprus and makes recommendations on how the collected energy can be increased by varying the tilt angle.

TL;DR: In this paper, the authors present energy conservation and techno-economic assessment studies of a hybrid solar space-conditioning system consisting of conventional vapour-compression (V-C) and liquid-desiccant cycles.

TL;DR: In this article, the authors present the results of a series of studies in which the effect of temperature, pH, carbon-nitrogen ratio and retention time on biogas production from cowdung were investigated.

TL;DR: In this paper, a solar collector includes a base having a fixed portion and a rotatable portion and having a movable housing mounted to the rotatable part of the base so that the solar collector housing can be rotated and moved up and down to aim the collector face towards the sun.

TL;DR: A conclusion of this project that the viability of OTEC could be increased by a greater attention to the needs and conditions present in the intended markets, and one of the most promising market for OTEC as an energy generation source, in the short term, appears to be the Republic of China (Taiwan).

TL;DR: In this article, the effect of humidity on the reception of solar radiation and the resulting effect on the generated electrical power in this climatic region was investigated using a monocrystalline silicon photovoltaic module containing 33 cells connected in series.

TL;DR: Based on the good capillarity of a jute wick, a new type of solar still has been proposed in this paper, which is simply a conventional solar still provided with a blackened jutewick floated with a polystyrene sheet.

TL;DR: In this paper, the characteristics of the wind at 10 m height were studied over a period of 32 months and the sampling interval was 20 ms and the averaging time was 10 min.

TL;DR: In this article, 13 years of wind data from Bozcaada Meteo-station have been used to evaluate the potential of wind power in the North-eastern part of the Aegean Sea.

TL;DR: In this paper, the variability of the wind power on the western coast of Anatolia, considering the Weibull distribution, was reported, and the highest value of mean monthly wind power of 562 W m−2 was observed in February at 10 m.

TL;DR: In this article, the authors present a review of such an identification on the basis of the assessment of the contribution of the Sunshine Project to its initial objectives (i.e., to induce the industry to substitute technology-driven clean energy for limited energy sources, mainly oil).

TL;DR: In this article, the authors proposed that biogas and solar energy could supply energy for various applications and thus raise the living standards of the people, especially for the rural population.

TL;DR: In this article, a complete numerical model for the prediction of air and soil temperature fields under a building is developed, which describes the simultaneous heat and mass transfer inside an earth-tube system and into the soil, taking into account the soil's natural thermal stratification.

TL;DR: In this article, a solar maize dryer incorporating a directly coupled photovoltaic (PV) powered d.c. fan was developed and field tested for small scale use in Malawi, central Africa.

TL;DR: In this article, three major sources, namely, hydro-electricity, biomass and solar energy, are discussed, focussing more towards the needs of electrical energy for electrification, and the need to dispose biomass waste generated from forestry and agricultural industries.

TL;DR: In this article, the thermal performance of a thermosyphon solar air heater with built-in latent heat thermal energy storage system is presented, and the results are presented for two limiting values of the maximum (noon) solar intensities of 700 and 900 W m−2 and the average ambient temperature of the city of Alexandria, Egypt.

TL;DR: In this paper, the authors evaluated the performance of rapeseed methyl ester (RME) on an unmodified diesel engine and compared the effect of using RME in a diesel engine with baseline test on diesel fuel.

TL;DR: In this paper, the thermal performance of a simple design solar air heater is presented and the integrated system performance curves are presented and a marked improvement in system performance is noticed over the conventional flat-plate heater system.

TL;DR: In this paper, the authors used optical concentrators to reduce the cost of solar electricity and developed more efficient pump/motor/controller systems for small photovoltaic pumping systems.

TL;DR: In this paper, two stochastic models are presented of the daily global solar radiation obtained from three years of data measured on a horizontal surface in Marrakesh, Morocco (latitude 31°37′N, longitude 08°02′W, elevation 463 m).

TL;DR: In this paper, the authors evaluated wind data collected over a period of three years at four different locations in Gokceada to estimate the potential of wind energy in the north-western part of Turkey.

TL;DR: In this article, the combined effects of fixed pressure drop and specific air mass flow rate on duct dimensions (length and depth) of single-pass-with-bare-plate, single-cover and double-cover solar air heaters were assessed.

TL;DR: In this article, the velocity and pressure coefficient field around a NACA airfoil is investigated, by reducing the problem to the solution of a non-linear multidimensional singular integral equation, when the form of the source and the vortex strength distribution is dependent on the history of the vorticity and source distribution on the NACA surface.