In this study, the effect of dust accumulation on the performance of photovoltaic (PV) module has... more In this study, the effect of dust accumulation on the performance of photovoltaic (PV) module has been shown. A statistical analysis has been conducted on a medium sized sample data collected from 30 hours of experimental work to obtain an empirical coefficient like temperature coefficients of short circuit current and open circuit voltage usually provided by manufacturers. This coefficient will be named dust coefficient of short circuit current and it will represent a predefined range of environmental conditions and soiling amounts; as the available testing conditions, and the statistical model prediction limits bound the coefficient extent of applicability.
Buildings, new and old, account for 50% of global energy consumption and related emissions. This ... more Buildings, new and old, account for 50% of global energy consumption and related emissions. This figure rises to more than 70% for the Gulf Region. Estimates of the cut in carbon emissions needed within our lifetime to avert catastrophic climate change range from 60% to 80% of current demand. Buildings thus present both a major impediment to reducing our reliance on the burning of dwindling reserves of fossil fuel and a real opportunity for achieving significant reduction in global carbon emissions. Dynamic Insulation (DI) is an energy-efficient method of supplying pre-tempered, filtered ventilation air to a building through an air-permeable, dynamically insulated envelope or facade. One of the important features of DI is that it effectively decouples ventilation rate from energy use. In theory, it should work well with all buildings, including homes, schools, offices and sports facilities where high occupancy is the norm. Our paper investigates the use of DI in a building facade fo...
This report describes a method of simulating the performance of dynamic insulation in the IES mod... more This report describes a method of simulating the performance of dynamic insulation in the IES modelling environment.
In this study, the effect of dust accumulation on the performance of photovoltaic (PV) module has... more In this study, the effect of dust accumulation on the performance of photovoltaic (PV) module has been shown. A statistical analysis has been conducted on a medium sized sample data collected from 30 hours of experimental work to obtain an empirical coefficient like temperature coefficients of short circuit current and open circuit voltage usually provided by manufacturers. This coefficient will be named dust coefficient of short circuit current and it will represent a predefined range of environmental conditions and soiling amounts; as the available testing conditions, and the statistical model prediction limits bound the coefficient extent of applicability.
Buildings, new and old, account for 50% of global energy consumption and related emissions. This ... more Buildings, new and old, account for 50% of global energy consumption and related emissions. This figure rises to more than 70% for the Gulf Region. Estimates of the cut in carbon emissions needed within our lifetime to avert catastrophic climate change range from 60% to 80% of current demand. Buildings thus present both a major impediment to reducing our reliance on the burning of dwindling reserves of fossil fuel and a real opportunity for achieving significant reduction in global carbon emissions. Dynamic Insulation (DI) is an energy-efficient method of supplying pre-tempered, filtered ventilation air to a building through an air-permeable, dynamically insulated envelope or facade. One of the important features of DI is that it effectively decouples ventilation rate from energy use. In theory, it should work well with all buildings, including homes, schools, offices and sports facilities where high occupancy is the norm. Our paper investigates the use of DI in a building facade fo...
This report describes a method of simulating the performance of dynamic insulation in the IES mod... more This report describes a method of simulating the performance of dynamic insulation in the IES modelling environment.
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Papers by Dr-Esam Elsarrag