Now showing items 111-116 of 116
Energy harvesting by vibration using piezoceramic materials (PZT-4)
The concept of energy harvesting in the ambient environment is of great interest. Energy harvesting is the process of drawing out a small amount of energy from the ambient environment. The ambient environment is characterized ...
Double shrouded horizontal axis wind turbine.
This research study deals with the design and optimization of a Shrouded Horizontal Axis Wind Turbine which is an emerging system in the field of renewable energy resources. The literature review shows that several authors ...
Simulation and experimental evaluation of a hybrid flat-plate vacuum insulated photovoltaic and thermal power module.
Current Photovoltaic (PV) technologies are characterised by low conversion efficiencies due to the inability to fully absorb solar radiation within the spectral range. This results in the generation of residual heat and ...
Production, evaluation and testing of biodiesel : case studies of Moringa oleifera and selected tropical seed oils.
Production, evaluation and comparative testing of biodiesel from Moringa oleifera seed oil and selected tropical feedstock oils were undertaken in this study. From studies, Moringa oil has higher oil yields and excellent ...
An investigation of solar powered absorption cooling systems for South Africa.
Increased standards of living and indoor comfort demands have led to an increase in the demand for air-conditioning in buildings in South Africa. Conventional vapor compression systems use refrigerants that damage the ...
Reducing noise from wind turbines using active noise control.
Wind turbines while operating produce noise from the rotating mechanical parts and from the interaction of the blades with surrounding airflow. The noise produced by the blades consists of low frequency noise, airfoil ...