An oil refinery emits 20 g/s of SO2 at effective stack height of 100 m where the wind speed equals 6 m/s. The horizontal oy and vertical o, standard deviations in meters at a distance of 0.9 km downstream are 30m and 20m, respectively.

Q: Estimate the rate of emission of SO2 in g/s that results in a centerline (y=0) concentration at…

A: The concentration of the ground level at one kilometer from the stack = 1.412x10-3g/m3Clear summer…

Q: Water at 300 K flows, under the influence of gravity, through a vertical packed bed of spheres 2 cm…

A: Given- Temperature, T=300KDiameter of spheres, D=2 cm=0.02 mporosity, n=0.35

Instruments for Surveying

Surveying is the practice that determines the relative three-dimensional positions of many different points on the earth’s surface. There are various instruments used in Surveying like Theodolites, Total station, Tripod stands, Plane table, etc. for measuring horizontal angle, vertical and sloping angle, which are very useful for giving accurate and precise measurement.