Steam at 460°C and 17 MPa undergoes an isobaric process until the specific volume becomes 0.007185 m3/kg. a.) What is the work for a nonflow process? b.) What is value of heat transfer for steady flow system?
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- In which process will the internal energy of the system NOT change? Explain why. a. An adiabatic expansion of an ideal gas. b. An isothermal compression of an ideal gas. c. An isobaric expansion of an ideal gas. d. The freezing of a quantity of liquid at its melting point. e. The evaporation of a quantity of a liquid at its boiling point.The pressure and volume of an ideal gas change from A to B to C as shown in the following figure. The curved line between A and C is an isotherm. - Isotherm B 4.00 x 105 A 0.200 0.400 Volume, m3 (i) Determine the total heat for the process ABC. (ii) State and explan whether the flow of heat is into or out of the gas due to the process ABC. Pressure, Ра6. Consider an isothermal process. If the heat flows 10.0 J from the system, find the change of internal energy. A.−10.0 J。 B.10.0 J。 C.5.00 J。 D.0.00 J。
- A hot reservoir at 1700C transfers 400 kJ of heat to a cold resevoir at 500 C. What is the total change in entropy? a. 1,210 J/K b. 335 J/K c. 5,560 J/K d. 130 J/K e. 0.000 J/KDuring one complete cycle of a heat engine process, which of the following quantities is nonzero? a. The change in internal energy b. The change in volume. c. The work done d. The change in pressure e. The change in temperatureAn electrical power station requires 1.05 × 1014 J of heat transfer into the engine and has an efficiency of 42 %. a.) How much heat transfer occurs to the environment by the electical power station in J? b.) What is the ratio of heat transfer to the environment to work output? c.) How much work is done in J?
- A sample of an ideal gas goes through a full cycle, returning to the same pressureand volume. It does this by undergoing a. an isobaric expansion,b. a constant-volume reduction in temperature,c. and then an isothermal process back to its initial state. Draw the pV-diagram for this full cycle.8.4 A cylinder is equipped with a tight - fitting but easily movable piston. The cylinder contains 2.0x10^-4 m^3 of gas with normal air pressure. With a bunsen burner, the cylinder is heated until ga - then doubled its volume. a) Calculate how much work the gas does during the expansion b) How much does the internal energy change during the expansion of the gas have 5 degrees of freedom? c) How much heat has been added to the gas during the expansion?\Based on the given pV diagram, match the answers with questions. Isotherms of v the change in themal energy for process 0-1 A. zero - v the change in themal energy for process 0-7 B. not enough information v the change in themal energy for process 0-6 c. negative D. positive
- a. b. 4. Based on the first law of thermodynamics, which of the following is wrong? The sum of the work and energy change is equal to the heat transferred. The heat transfer can not exceed the work done. C. The net heat transfer equals the net work of the cycle. d. The net heat transfer equals the energy change if no work is done. nstantiA 39% maximum efficient coal-fired power plant needs to produce 600 MW of power. A. To achieve maximum efficiency, if the waste water is dumped into a 13 degree Celsius lake, what temperature must the steam be heated to? B. Since coal contains 27 kJ of energy per gram, how many kg of coal must be burned in a day?A gas expands from 2.2 L to 3.6 L against a constant external pressure of 1.6 atm. What is the work done? A. -227 J B. 227 J C. 2.24 J D. -2.24 J