subject
Engineering, 30.09.2019 20:20 zavalaaria

For the piston-cylinder determine how long it will take the contained gas to reach the operating temperature during the constant volume process state 1 to 2. consider this to be an external heat source cycle such as in a stirling engine. note this is the time to complete this part of the cycle. the volume of the cylinder is 2.02(10-5) m3, its radius is 0.0254 m and its length is 0.01 m. its initial temperature and pressure are 293 k and 1 bar and its final temperature is 800 k. the cylinder wall thickness is 0.007 m which is also the end face thickness. the heat source temperature is 900 k and is convectively connected to the cylinder through a heat transfer coefficient equal to 21 w/(m2 k). the convection heat transfer within the cylinder can be treated as equal to infinite. the system is composed of the steel walls and the gas within the cylinder. in this calculation the contained gas can be considered to be well mixed and at a uniform spatial temperature equal to that of the steel walls. the cylinder walls are steel with the following properties: k = 37.7 w/(m k) = thermal conductivity, rho = 7822 kg/m3 = density and c = 444 j/(kg m3) = specific heat. does the heat transferred during this heating process equal that predicted by the thermodynamic analysis

ansver
Answers: 2

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
question
Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
question
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
question
Engineering, 04.07.2019 18:20
Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above
Answers: 1
You know the right answer?
For the piston-cylinder determine how long it will take the contained gas to reach the operating tem...
Questions
question
Mathematics, 13.10.2019 08:30
question
Mathematics, 13.10.2019 08:30
Questions on the website: 13722363