Engineering, 11.11.2019 19:31 angela6844
Three hundred l/h of a 20 mole% c3h8–80% n-c4h10 gas mixture at 0°c and 1.1 atm and 200 l/h of a 40 mole% c3h8–60% n-c4h10 mixture at 25°c and 1.1 atm are mixed and heated to 227°c at constant pressure. enthalpies of propane and n-butane are listed below. assume ideal-gas behavior.
propane butane
t(°c) h^(j/mol ) h^(j/mol )
0 0 0
25 1772 2394
227 20,685 27,442
(a) calculate the heat requirement in kj/h.
(b) where in your calculations did you use the ideal-gas assumption? (just need part b)
will rate : )
Answers: 2
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Engineering, 04.07.2019 18:10
Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges
Answers: 1
Engineering, 04.07.2019 18:20
An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid
Answers: 3
Three hundred l/h of a 20 mole% c3h8–80% n-c4h10 gas mixture at 0°c and 1.1 atm and 200 l/h of a 40...
History, 05.05.2020 14:26
Social Studies, 05.05.2020 14:26
Mathematics, 05.05.2020 14:26
History, 05.05.2020 14:26
Mathematics, 05.05.2020 14:26
Mathematics, 05.05.2020 14:26
Biology, 05.05.2020 14:26
Biology, 05.05.2020 14:26
Mathematics, 05.05.2020 14:26
Mathematics, 05.05.2020 14:26