No abstract

No abstract

The increasing demand for energy in Bangladesh as well as all over the world is continuously growing unabated because of the increase of the world population and the countries’ fast-developing industrialization programs. In this critical stage of energy crisis, renewable energy is a highly welcome reliable energy source wherein wind energy is the cheapest replenishable and available energy source of the time. Regarding this particular energy source, a feasibility study of the wind energy in Chittagong has been done by analyzing the wind speed data. It is estimated that the maximum practical power output generated can be 124.53 MW at Parky beach. The number of wind turbines, operation and maintenance cost and pay-back period of those sites are also calculated.

No abstract

This paper presents a study of the effects of temperature, curing time and silver nano-particles (AgNPs) on the concentration of the PVP/PVA nano composites on shear force of adhesive nano-joining (ANJ). Low temperature (LT) ANJ of copper–copper (Cu–Cu) at the temperature values of 200, 215, 225, 240 and 275°C and curing times of 10, 20 and 30 minutes, under fixed pressure (5 MPa) are investigated. Higher shear strength value is found at a temperature value of 227 °C and time extent of 10 minutes. It is noted that for an AgNPs concentration of (5%wt) a maximum value of shear strength (2180N) is reached. These results indicate that resistance will increase with raising of the heat up to 227 °C, then followed by a decrease in strength up to 275 °C at a curing time of 10 minutes. The results have been optimized with Neural Network (NN) for accuracy.