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Why does turbulent flow distribution adhere more closely to the idealization of one dimensional flow than laminar flow? What significance does the velocity distribution have for mass flow rate meas
Determine the total length of the 1/2" tube that is required to provide the DHW. Determine the mean diameters of the three coils, and the length of tube in each coil.
Assume frictionless flow through all piping and heat exchangers. Find the coefficient of performance and the temperature T6 after the compressor for isentropic compressor efficiency 0.75.
If a torque of M=200(1-e^(-0.2t))Nm, where t is in seconds, is applied to gear A, determine the angular velocity of both gears when t=3s, starting from rest.
Assume the refrigerant is a saturated vapor at the evaporator exit, and a saturated liquid at the condesner exit. The isentropic compressor efficiency is 80%. Determine the following compressor work
The pressure at the discharge is 5 psi gage. The solution has a r=67.4 lbm/ft3 and a m=0.00128 lbm/ft-s. Calculate the work required of the pump in ft-lbf per lbm of solution.
Milk enters the tank through a 0.05 m diameter pipe at a velocity of 3 m/s. Milk is also being removed at a velocity of 2.5 m/s through a 0.06 m diameter drain. How much milk is in the tank after on
A food liquid with a viscosity of 0.0209 lbf-s/ft2 is being pumped through a two-inch stainless steel pipe at a rate of 5.0 ft3/min. What is the Reynolds No. for this situation?
Also venous blood enters at 0 mm Hg and leaves at 15 mm Hg to the lungs. Assuming a flow rate of 5 litters/min., what is the total work done by the heart.
Milk is pasteurized if it is heated to 63C for 30 min, but if it is heated to 74C, it only needs 15 seconds for the same results. Calculate the activation energy of the sterilization process?
Show that the moving cylinder leaves the fixed one when the line of the centers makes angle with the vertical of theta = cos-1 (4/7).
Given \(N=1000 lb, E=30x10^{6} psi, \upsilon=0.3, L=4 ft, \gamma=0.283 lb/in^{3}\) and a 4"x4" hollow square tube beam cross section with a wall thickness of 0.25". Derive the frequency equation for
What will be the work of adhesion between water and {100}Si plane WSL, if a sessile drop of H2O on the Si surface forms an angle of 33 °.
Draw a schematic of band structure of a compound that has s and p orbitals occupied. Show where is the Fermi energy and explain where are bonding and antibonding bands.
The turbine and pump have isentropic efficiencies of 88%. For the cycle, determine the rate of heat transfer to the working fluid passing through the steam‚ generator, in Btu/h.
The heat transfer rate from the working fluid passing through the condenser is 50,000 Btu/h, and liquid refrigerant exits at 250 psi and 105 oF. If the compressor operates adiabatically, determine
Determine the minimum mass flow rate (kg/s) of the water so that the water not completley vaporize. Neglect the pressure drop through the exchanger and assume a saturated vapor state.
If the roller radius is 0.375 in and the prime-circle radius is 2 in, construct the displacement diagram, the pitch curve, and the cam profile for clockwise cam rotation.
An astronaut on the planet Vimrom IV finds that she can jump a maximum horizontal distance of 13.00 m if her initial speed is 3.90 m/s. What is the acceleration due to gravity on this planet?
A solid cylinder has a mass of 5kg, a diameter of 9cm and is 60cm high. it starts at point A and must be moving at 2m/s so it slides on to a convyer belt (moving at 2m/s) at point D.
Nitrogen gas flows into a convergent nozzle at a pressure of 225kPa, a temperature of 440K. What is the velocity of the Nitrogen at the exit of the nozzle?
Determine the change in specific entropy (kJ/kg-K) for air undergoing a process from state 1 (T1 = 300 K, P1 = 109 kPa) to state 2 (T2 = 876 K, P2 = 467 kPa).
Calculate the average distance moved in one day by smoke particles in air for the following cases: (a) smoke diffuses in air with a diffusion coefficient of 10-7 m2/s.
Inlet 1 is a saturated vapor with a flow rate of 0.34 kg/s, and inlet 2 is at 40oC with a flow rate of 0.242 kg/s. Determine the rate of entropy production in the mixing box (kW/K). Assume steady st
What should be the total cross sectional area of the air intakes (for the radiators) if the velocity of the air (normal to the inlet area) is equal to the speed of the car?