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For the buried pipe example (9.8) in the text, determine which of the three flow rate cases leads to the least expensive installation.
Example 9.8
Provide the necessary 12 in. diameter pipe length(s) that will deliver 1500 cfm of 75°F air if the ambient temperature is 85°F and the soil at 9 ft is 65°F.
In a heating/humidifying system moist air first flows through a heating coil and then through an air washer. The air enters the system at 55 °F dry-bulb temperature and 40 % relative humidity. The air exits the system at 90 °F dry-bulb temperature an..
the rotor of an electric motor has a mass of 25kg and a radius of gyration of 180mm. it is observed that 4.2 min is
determine the largest intesity w0 of the distributed load that the beam can support if the beam can withstand a maximum
A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
gold foil is 0.08 mm thick and 670mm2 in area. a it is cubic with a0.4076nm. how many unit cells are there in the foil?
Calculate the theoretical power in kW to 1 DP developed by a fluid motor. The formula is: theoretical power = Volumetric Displacement * Angular Speed * pressure where the volumetric displacement = 102 cubic centimetres / revolution, the Angular Speed..
an electrical window air conditioner with a cooling capacity of of 8000 kjhr draws 6.00 amps of electrical current at
a gas turbine can assume an ideal brayton cycle has a pressure ratio of 10. it is connected to an electric generator
SEM212 - Aim of this demonstration is to use measurements of the load required to propagate a crack (tear) in packaging tape to determine its fracture toughness.
A Pitot-static probe connected to a water manometer is used to measure the velocity of air. If the deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.2..
would it be a possible to use a normal domestic refrigerator as a heat source for a small hot tub or whirlpool? if so
A solid cone of radius R and vortex angle 2θ is to rotate at an angular velocity, ω .An oil of dynamic viscosity µ and thickness ‘t' fills the gap between the cone and the housing. Determine the expression for Required Torque.
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