Engineering
Engineering, 25.07.2020 19:01, achasengnou792

1) Mathematically write 2nd Law (for all type of systems) using 3 symbols2) Entropy, s , is an intensive thermodynamic property T or F 3) Eliminate Sgen to minimize Wout of power cycle and maximize Win of heat pump T or F 4) For a specified inlet state, exit pressure, and mass flow rate, the power input to a compressor operating at steady state is less than what would be required if the compression occurred isentropically. T or F 5) For a specified inlet state, exit pressure, and mass flow rate, the power developed by a turbine operating at steady state is more than if the expansion occurred isentropically. T or F 6) The Carnot cycle analyzed in problem 6.169 produces entropy, Sgen > 0 T or F 7) The boiler and condenser in problem 6.169 produces entropy, Sgen > 0 T or F 8) The mixing of two streams of water at different temperature in a mixing tee (i. e. kitchen faucet) is an irreversible process, and produces entropy, Sgen > 0 T or F 9) Entropy generation, Sgen , is an intensive thermodynamic property T or F

answer
Answers: 1

Other questions on the subject: Engineering

image
Engineering, 04.07.2019 18:10, johnthienann58
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
image
Engineering, 04.07.2019 18:10, QueenLife4869
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
image
Engineering, 04.07.2019 18:20, aly95
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
image
Engineering, 04.07.2019 18:20, miguel454545
Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.
Answers: 1
Do you know the correct answer?
1) Mathematically write 2nd Law (for all type of systems) using 3 symbols2) Entropy, s , is an inten...

Questions in other subjects:

Konu
Mathematics, 07.10.2020 19:01