A storeroom of dimensions 10 x 8 x 3 m is maintained at 21oC and 50% RH and has a total heating load of 10 kW. The room is provided with 8 air changes per hour when ambient conditions are 30oC and 60% RH. Determine: a. the total cooling rate b. moisture removed per hour c. the minimum diameter of the fresh air duct so that the velocity in the duct does not exceed 3 m/s

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Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.