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Consider an air conditioning system where warm, humid air flows first over cooling coils, where it is cooled and dehumidified, and then over an electrical heater where it is reheated to the desired end temperature. In one application air at 1 atm, 34°C, 70% relative humidity flows through a system of this type, where it exits at 22°C, 50% relative humidity. Assume that any condensate is removed at 10°C. Determine the (a) temperature of air before it enters the heating section, (b) the amount of heat removed in the heating section (kJ/kg dry air), and (c) the amount of heat transferred in the heating section (kJ/kg dry air). Use the psychrometric chart for this solution.
the inlet and exit temperatures of a jet engines nozzle have been measure to be 518k and 360k respectively. using the
the united states navy wants to deploy a system of free floating sonar buoys. the electronics are contained in a
a 2 phase liquid-vapor mixture of 2 kg of water is contained in a rigid insulated tank initially with a pressure of 1
initially an insulated rigid tank contains 15.65 kg of water at 24.16oc and 101 kpa. the tank also contains a 3.12 kg
a boat is traveling along a circular path having a radius of 20m . determine the magnitude of the boats acceleration if
determine the minimum value of basic dynamic loading rating for selecting ball bearing to 5000 hrs of operation with
if the 1500-lb boom ab the 200-lb cage bcd and the 175-lb man have centers of gravity located at points g1 g2 and g3
in a condenser of a steam power plant the lake water is used as a coolant for the condensing steam. steam enters at 10
a mountain climber determines his altitude using atmospheric pressure and temperature measurement data. he uses a
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
a large pipe carries steam as a two-phase liquid-vapor mixture at 1.0 mpa. a small quantity is withdrawn through a
Assuming this pressure creates a force of F = F 0sin( t / t0) on the bullet, determine the velocity of the bullet at any instant it is in the barrel. What is the bullet"s maximum velocity?
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