subject
Engineering, 14.09.2019 01:30 jessica01479

Arigid tank of total volume 0.2 m^3 initially contains saturated vapor r-134a at an absolute pressure of 10 bar (state 1). a supply line connected to the tank via a valve contains r-134a at an absolute pressure of 14 bar and temperature of 60 c. the valve is opened until 0.1 m^3 of the tank is filled with saturated liquid r-134a while 0.1 m3 of the tank is filled with saturated vapor r-134a, both at an absolute pressure of 12 bar (state 2). (a) what is the quality (%) of r-134a at state 2? (b) determine the heat transfer (kj) during the process. indicate whether it is into the system or out of the system.

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
question
Engineering, 04.07.2019 18:10
Assuming compressible flow of air and that the measurements are done at flagstaff a pitot static tube that gives the difference of total and static pressure measures 0.35 m of mercury. what is the velocity of air? assume the temperature to be 300k. (submit your excel or matlab calculation sheet)
Answers: 1
question
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
question
Engineering, 06.07.2019 04:10
An inventor claims to have developed a reversed heat engine (ie. a heat pump) which is able to deliver 10 kj heat into the room at 20°c from outside ambient temperature of -10°c by consuming only 2 kj electricity in winter. this claim is a)-impossible b)-possible only if the heat pump is ideal c)-practically possible d)-unable to be assessed as it depends on the working fluid used in the heat pump.
Answers: 2
You know the right answer?
Arigid tank of total volume 0.2 m^3 initially contains saturated vapor r-134a at an absolute pressur...
Questions
question
Mathematics, 27.05.2020 21:00
question
History, 27.05.2020 21:01
question
Mathematics, 27.05.2020 21:01
Questions on the website: 13722359