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The stagnation pressure and temperature of air flowing past a probe are 120 kPa(abs) and 100 °C, respectively. The air pressure is 80 kPa(abs). Determine the airspeed and the Mach number considering the flow to be
(a) incompressible,
(b) compressible.
Half a kilogram of nitrogen, initially at 350K and 200Kpa is compressed through a poly tropic process with pv^1.4= constant. If the final temperature is measured to be 400K, find the work in the process.
a south facing wall of a building is 5 m high and 7 m wide. the wall absorbs the incident solar energy at a rate of 500
a thin-walled cylindrical pressure vessel of inner radius 30 mm wall thickness 3 mm and closed ends is subjected to an
a power cycle operates between hot and cold reservoirs at 600 k and 300 k respectively. at steady state the cycle
an intermediate heat exchanger in a cascade refrigeration system exchanges heat between a condensing refrigerant in the
A 12 foot, A-36 steel, column has an outer diameter of 3.0 in and a thickness of 0.25 in. Determine the critical load if the bottom and top are both pinned. A 10 meter wooden column has a square cross section of 50mm x 50mm. Determine the critical lo..
Discuss at least one example of a challenge that you would expect to face if you tried to implement your design solution into your target community. Describe at least three ways that you could try to overcome that challenge.
Consider the question of generating electricity with silicon solar cells.
The figure shows an N-truss girder, loaded by concentrated vertical forces of magnitude 3P at the joints F and J, and of magnitude 6P at the joints G, H and I. All bars are elastic with stiffness EA.
1. work at a rate of 25 kw is done by a paddle wheel on a slurry contained within a closed rigid tank. heat transfer
determine the frequency of the rotor currents
There are no significant pressure drops in the flows through the evaporator and condenser. Determine the evaporator and condenser pressures, each in lbf/in.2, the mass flow rate of refrigerant, in lb/min, the compressor power input, in horsepower,..
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