Chapter 7, Problem 7.76P

The Figure shows a simple vapor power plant operating at steady state with water circulating through the components. Relevant data at key locations are given on the figure. The mass flow rate of the water is 90 kg/s. Kinetic and potential energy effects are negligible as are all stray heat transfers. Determine a. The heat added in boiler to the water b. If the combustion efficiency is 85%, find the mass of diesel fuel combustion rate in kg/day if CVDiesel =52 MJ/kg. c. The output turbine power in kW.

THERMODYNAMICS - Conservation of Mass UPLOAD AND EXPLAIN COMPLETE SOLUTION. Consider steam that enters a turbine at 70 bar, 530oC with a velocity of 64 m/s. The turbine is operating at steady state conditions and the steam leaves the turbine as a dry saturated vapor at 10 bar. The inlet diameter of the turbine is 0.45 m and the outlet diameter is 3.6 m. Determine the mass flow rate of steam through the turbine.

An open feedwater heater is a direct-contact heat exchanger used in vapor power plants. Shown in the figure below are operating data for an open feedwater heater with H2O as the working fluid operating at steady state, where T1 = 41 °C.   Ignoring stray heat transfer from the outside of the heat exchanger to its surroundings and kinetic and potential energy effects, determine the rate of entropy production, in kW/K.

An open feedwater heater is a direct-contact heat exchanger used in vapor power plants. Shown in the figure below are operating data for an open heater with H,0 as the working fluid operating at steady state. Ignoring stray heat transfer from the outside of the heat exchanger to its surroundings and kinetic and potential energy effects, determine the rate of entropy production, in kW/K. (Hint: Use the first law to find the mass flow rates) Also determine state point 1 and 2 on a T-s diagram, then mix them and show the outcome is 3. Show 3 on the T-s diagram. P2 = 3 bar x2 = 0.92 (2) P3 = 3 bar saturated liquid m3 = 80 kg/s P1 = 3 bar T1 = 36°C Open Feedwater (3) Heater

1. Water and air are used as working fluids in a counter-flow heat exchanger operating at steady state. Water enters as a saturated vapor at 300 kPa with a mass flow rate of 10 kg/s and exiting as saturated liquid. Air enters in a separate stream at 0°C, 100 kPa and exits at 37°C. Pressure changes and the heat transfer between the heat exchanger and its surroundings are negligible. Determine the rate of exergy destruction in the heat exchanger.

Figure shows data for a portion of the ducting in ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 bar throughout. Assuming the ideal gas model for air with Cp  = 1 kJ/kg · K. and ignoring kinetic and potential energy effects, determine: (a) the temperature of the air at the exit, in °C. (b) the exit diameter, in m. (c) the rate of entropy production within the duct, in kJ/min.

Step by step solution please I only have 1 attempt thank you.

2. The work required to compress a gas reversibly according to pV130 = C is 67,790 J, if there is no flow. Determine AU (in kJ) and Q (in kJ) if the gas is methane. For methane, k = 1.321, R = 518.45 J/kg-K, cv = 1.6187, cp = 2.1377 J/kg-K please draw the P-V and T-S diagrams

Show your complete solution and answer to the given problem. Please also include schematic diagram.Thank you.