Engineering, 03.01.2021 07:50 ooof3
(A) A piston-cylinder device initially contains steam at 3.0 MPa, superheated by 16.1°C with a volume of 0.4m ^ 3 . At its initial condition (State 1), the piston (weighing 12445 kg with a diameter of 0.3 m), is 30 cm above the stops at an equilibrium condition. The arrangement is open to an outside pressure of 90 kPa. Determine , () The initial temperature of steam [1] Mass of the steam[1] () Force balance diagram at this condition [1] (iv) Total enthalpy and Total internal energy (kJ) [2] (Bthe moves
Answers: 3
Engineering, 03.07.2019 15:10
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10
During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false
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Engineering, 04.07.2019 18:20
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
Answers: 3
Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
(A) A piston-cylinder device initially contains steam at 3.0 MPa, superheated by 16.1°C with a volum...
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