Engineering, 29.01.2020 04:51, Travon1418
Afuel gas is delivered to an industrial plant by a 3-in sch 40 commercial steel pipe, 80 m long. the gas has molecular weight of 18, viscosity of 1 × 10−5 kg/(m/s) and = 1.4. the gas is available at 1 mpa and 75℃ and the required delivery pressure is 500 kpa. the mach number at the entrance is given as 0.05. assuming that the delivery is adiabatic, calculate the exit temperature, the superficial mass velocity and the exit mach number. verify if the expansion is in the choking flow regime or not.
Answers: 3
Engineering, 03.07.2019 14:10, BardiFan
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
Answers: 3
Engineering, 04.07.2019 18:20, safiyabrowne7594
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 19:10, ultimateapes
When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?
Answers: 2
Afuel gas is delivered to an industrial plant by a 3-in sch 40 commercial steel pipe, 80 m long. the...
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