In an air separation plant, air is cooled and its components are separated from the mixture. cooled oxygen at a temperature of 20°c must be heated to a temperature of 30°c for accurate metering. the oxygen flow rate at 30°c is 0.01 kg/s. air (available at 35°c and 0.015 kg/s) is used as the heating medium. a number of 3 x 2 schedule 40 double pipe heat exchangers that are 2 m long and made of galvanized steel are available. determine how many are required. calculate outlet temperatures and pressure drops. compose a summary of performance chart.

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false