A computer simulation model is presented for the analysis of a solar photovoltaic/thermal (PV/T) hybrid collector with air as heat transfer fluid and algorithm for making quantitative prediction regarding the performance of the system is described. Thermal efficiency curves for the solar PV/T...

An experimental study has been carried out to compare the performance of natural and forced circulation domestic solar water heaters. Several measurments have been made for the two cases which included; the collector water inlet and outlet temperatures, the mass flow rate, the tank temperature, the...

A microturbine cogeneration system providing electrical power and space cooling to a laboratory space is presented. The system comprises a microturbine, a lithium bromide absorption chiller, heat exchangers and a propane fuel supply system. Results from the performance tests conducted on the...

The performance of small-scale stand-alone photovoltaic systems is tested under the climatic conditions of Addis Ababa, Ethiopia. With climatic data obtained at a station in the Rift Valley, the photovoltaic system performance is estimated for those climatic conditions. The economics of...

Methanol decomposition over alkali-leached Ni3Sn powder at 513–793 K was investigated. Compared with untreated Ni3Sn, alkali-leached Ni3Sn had high catalytic activity and selectivity toward H2 and CO production above 633 K. A maximum H2 production rate of...

The region of Adrar, is one of the most remote and the most deprived regions in Algeria. The development of this region requires the exploitation of its natural resources more particularly of its solar and wind energy resources. However, the exploitation in an effective and viable way of these...

Based on CO2 acceptor gasification technology, a biomass anaerobic gasification technology for H2 production was proposed. Utilizing thermodynamic equilibrium calculation software FactSage 5.2, the rules of biomass/CaO/H2O and C/CaCO3/air reaction system involved in this H2 production technology...

Relatively large percentages of xylose with glucose, arabinose, mannose, galactose and rhamnose constitute the hydrolysis products of hemicellulose. In this paper, hydrogen production performance of facultative anaerobe (Enterobacter aerogenes) has been investigated from these different...

When exposed to sunlight purple bacteria produce hydrogen from water and organic substrates by photosynthesis. In this paper a technical approach to utilize this effect as an energy source is presented including the development of a suitable reactor concept. Phototrophic bacteria have special...

Air quality of Kathmandu Valley, the capital of Nepal, was one of the worse among the big cites in the world. The air quality situation was becoming more critical due to the substantial increase in the conventional fueled vehicles in the valley each year. The bowl-like topography and generally...