Thermodynamics 1. Correct Answer: 8.0087 ± 0.1% Steam at 1 MPa, 593.2oC, expands in a turbine...

Thermodynamics

1. Correct Answer: 8.0087 ± 0.1% Steam at 1 MPa, 593.2^oC, expands in a turbine to 0.01 MPa. If the process is isentropic, find the specific entropy (kJ/kg-K) at the exit of the turbine. Note: Give your answer to four decimal places.
2. Correct Answer: 301.43 ± 0.08%

Initially, an insulated rigid tank contains 19.37 kg of water at 27.04^oC and 101 kPa. The tank also contains a 4.42 kg copper block at 87.13^oC. Assume constant specific heats where C_water = 4.179 kJ/kg-K and C_Cu = 0.385 kJ/kg-K. Determine the final equilibrium temperature (K).

Note: Give your answer to two decimal places.

Solutions

Expert Solution

samet mamat answered 2 years ago

Next > < Previous

Related Solutions

Superheated steam enters a turbine at 3 MPa, 550oC, and exits at 0.01 MPa. a) If...

Superheated steam enters a turbine at 3 MPa, 550oC, and exits at 0.01 MPa. a) If the process is reversible adiabatic (isentropic), find the final temperature (T2s), the final enthalpy (h2s) of the steam, and the turbine work (Wt,s). b) What is Sgen for the above process? c) If the isentropic efficiency is 90%, find the actual final temperature (T2a) and calculate Sgen? d) Plot process (a) and (c) on a Ts diagram.

A steam turbine operates with steam at inlet conditions of 3.5 MPa and 3500 C. The...

A steam turbine operates with steam at inlet conditions of 3.5 MPa and 3500 C. The exit stream leave the turbine is at 0.8 MPa and is known to contain a mixture of saturated vapor and liquid. The steam rate through the turbine is 1000 kg/h. A (negligible) fraction of exit stream is bled through a throttle valve to 0.10 MPa and is found to be 1250 C. The measured output of the turbine is 100 kW. a) Determine the...

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa,...

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 500°C and 80 m/s, and the exit conditions are 30 kPa, 92% quality and 50 m/s. The mass flowrate of the steam is 12 kg/s. Investigate the effect of the turbine exit pressure on the power output of the turbine. Let the exit pressure vary from 10 to 200 kPa. Plot (1) T2 vs P2 and 2) Plot the power output (W_dot_T in MW)...

An adiabatic steam turbine receives 50 kg/s of superheated steam at 5 MPa and 500oC. Steam...

An adiabatic steam turbine receives 50 kg/s of superheated steam at 5 MPa and 500oC. Steam exits the turbine with a pressure of 100 kPa. Determine the minimum exit quality and the maximum power output of the turbine in kW.

Steam is supplied to a turbine at 50Bar, 400oC. It expands in the first stage until...

Steam is supplied to a turbine at 50Bar, 400oC. It expands in the first stage until it is dry saturated and then reheated to 400oC before expanding in the second stage to a condenser pressure of 0.05 Bar. Calculate the work output, Specific Steam Consumption (SSC) and the Rankine efficiency Compare these values with those obtained by a single stage expansion without reheat. Note - Neglect feed pump work

2 kg/s of steam enters a turbine operating at steady state at 1 MPa, 200oC and...

2 kg/s of steam enters a turbine operating at steady state at 1 MPa, 200oC and exits at 40oC with a quality of 83%. Stray heat transfer and kinetic and potential energy effects are negligible. Determine (a) the power developed by the turbine, in kW, (b) the change in specific entropy from inlet to exit, in kJ/kg·K.

Steam expands in a thermally isolated turbine steadily. The inlet pressure is 1MPa and temperature is...

Steam expands in a thermally isolated turbine steadily. The inlet pressure is 1MPa and temperature is 800 C, and the exit state is 300 kPA and 150 C. a- Determine the power generated by the turbine per unit mass flow rate of steam. b- Evaluate the entropy generation rate per unit mass flow rate of steam and drive a conclusion whether the turbine operates reversibly, irreversibly or the operation is impossible.

Thermodynamics Air at 3.5 MPa and 500°C is expanded in an adiabatic gas turbine to 0.2...

Thermodynamics Air at 3.5 MPa and 500°C is expanded in an adiabatic gas turbine to 0.2 MPa. Assume that the process is reversible. Changes in KE and PE may be neglected and the average temperature of the gases is 550 K. (a) Create a schematic representation of the equipment. (b) Represent the process on a T-s diagram. (c) Determine the polytropic exponent. (d) Determine the change in entropy for this expansion process

A steam turbine receives superheated steam at 18.0 kg/s, 500.°C, and 3.00 MPa and exhausts it...

A steam turbine receives superheated steam at 18.0 kg/s, 500.°C, and 3.00 MPa and exhausts it to 10 kPa with a quality of 96%. If the turbine is assumed to be internally reversible, determine the rate of heat loss from the turbine surface if the power output is 20.MW The surface temperature of the turbine is uniform at 350.°C, and the local environment (ground state) is taken to be saturated liquid water at T0 = 20.0°C. Neglect all flow stream...

Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to...

Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow rate is 2.52 kg/s, and the isentropic turbine efficiency is 92%. Stray heat transfer and kinetic and potential energy effects are negligible. Determine the power developed by the turbine, in kW.

Subjects