Research
Study of Environmental Impacts of the Barapukuria Thermal Power Plant of Bangladesh
The generation of electricity and consumption of energy in general, result adverse effects on the environment. Barapukuria is the only natural coalmine reserve in Bangladesh that is currently in operation. Barapukuria thermal power plant produces electricity from the reserved coal. The coal available in Bangladesh is of very high quality, with low ash content and high calorific value. Coal quality plays a great role in environmental impact as well as gaseous emissions. Source of water is the major problem for the Barapukuria thermal power plant and there is a poor disposal system of the waste water. By collecting the secondary data from the authority of the Barapukuria thermal power plant, this study was accomplished at Barapukuria thermal power plant to evaluate the pollutant (SO2) emission rate and its impact on human health due to air pollution. In this study attempts were made to find out the major environmental impacts to Barapukuria thermal power plant and finally showed the possible recommendations to reduce the impacts.
Design and Construction of a Wind Tunnel with Microcontroller based Isokinetic Probe for Sampling Aerosol Particle
Wind tunnel is a simple but marvelous element of scientific research and expanding empire of application day by day. Wind tunnel has been used in racing cars, airplanes, weather patterns, skydiving simulations and for aerofoil testing in laboratories. In this study, a wind tunnel with isokinetic probes has been designed, fabricated and tested for sampling aerosol particles. The cross section of the wind tunnel is circular having six inch in diameter. The type of flow in the tunnel is open, uniform and the cross sectional area is constant throughout the tunnel. In this work, an atomizer generates polydisperse aerosols in a generation chamber and monodispersetest aerosols are produced by separating the polydisperse aerosols in an improved virtual impactor. The monodisperseaerosols are passed through the wind tunnel and sampling is done in the tunnel. Isokinetic sampling probes have been designed, fabricated and installed at different locations of the tunnel for sampling generatedmonodisperse aerosol particles. Probe velocity measuring device by using pressure sensor named (MPXV5050GP) is also fabricated for making the sample isokinetic. It has been found that the sampling of aerosols is better than the conventional sampling in the outlet pipe in respect of less particle loss. The monodisperse aerosols in the wind tunnel help us to carryout research on aerosol properties and to calibrate the air pollution measuring instruments available in the market.
