analysis of peers. Mean overall efficiency has been calculated to be equal to 0.892, while mean pure technical efficiency is 0 ….569 and scale efficiency 1.798. Countries with remarkable renewable energy performance have medium to low efficiency, while …

In this study, Data Envelopment Analysis approach was used to analyze the energy efficiency of farmers, to find … saving energy was about 78% which was the highest share. Optimization of energy use improved the energy use efficiency …

This work presents a new analytical method to evaluate the efficiency of PV systems working in partial shading …

them were successfully fabricated and the cell performances were characterized. The efficiency of DSSCs based on ZnO and …

analyse the efficiency of fixed Oscillating Water Column (OWC) Wave Energy Conversion (WEC) devices with linear power take off … frequency and the capture efficiency of the OWC. The key outcome of the present work is that for fully nonlinear waves a … substantial decrease in the hydrodynamic capture efficiency of the OWC device was observed with increasing wave height, which …

A new definition of the exergy efficiency for two types of Sorption Heat Pumps (type I or conventional heat pump and … given operations. Finally the direct relationships between coefficient of performance and exergy efficiency of heat pump and …

carried out. This method of digestion was chosen in preference to the aerobic mode, among other factors, efficiency of COD and …

A graphical method to estimate the efficiency of a solar concentrator used for heating and boiling liquids is described … graphically estimated efficiency is within 5% of the efficiency obtained from solar radiation measurements. …

turbine efficiency are 10MW and 50%, respectively, which presents a reference to the design of large-scale solar chimney power …