Chapter 8, Problem 8.1P

An internally reversible process occurs in a system during which Q = – 12 KJ, AU = – 79 KJ and Ah = - 111 KJ A. Find the work if the system is non- flow. B. Determine the work and the change of flow energy if the system is steady state, steady flow system with AEK 4 KJ. %3D

Steam enters a throttling valve as a two-phase mixture at a pressure of 20 bar and a speed of 15 m/s. It leaves the valve at a pressure of 1 bar and a temperature of 120 -C.(a) Find the quality of the incoming steam.(b) Find the output speed.

pls correct this given this is my last attempt thanks

GIVEN: Gas HAS CONSTANT MASS IDEAL GAS SPECIFIC HEAT RATIO OF GAS GAS CYCLE раз At 1: P1 At 3: At 2 + 2 = : = 2 BAR T2 = 12: 23: T3 300°K 31: VOLUME is Y = 1.6 ISENTRO Pic REVERSIBLE ISOTHERMAL EXPANSION CONSTANT T1 = 149.8 x 150⁰ K V₁ = √3 ASK: A) ENTROPY B) TOTAL ENTROPY VARIATION FOR V₁ = 0.0005 m m³ PRODUCTION EACH FOR CYCLE WHOLE CY C L F

Integration of dQ/S is less than zero for reversible process Select one: O True False

Problem 4. Consider an adiabatic steam turbine operating at steady-state with a mass flow rate of 12 kg/s. At the inlet, the steam pressure is 10 MPa, the temperature is 450 °C, and the velocity is 80 m/s. At the exit, the pressure is 10 kPa, a quality of 0.92, and a velocity of 50 m/s. Find the change in kinetic energy Wout = ? Steam turbine (kJ/kg), the work out (power generated in MW), and the turbine inlet area (m²).

Given 0.603MW electrical power supplied to a boiler when the temperature of the entering water is 20 C and the exiting temperature is 89 C. The flow of.the pressured water is 2 Kg/s. There is a negligible pressure drop through this boiler and it operates at a constant pressure of 3 bars. The specific heat is c = 4,370 J/(Kg K).  a) Calculate the total rate of entropy production b) Calculate the total rate of exergy destruction (W). The dead state temperature is 293.2 K and pressure is 1 bar. c) Calculate the mass flowrate of fuel (natural gas, CH4) required to heat the water flow to the conditions of the problem if the electrical heating device is replaced with a gas fired boiler. The high heating value (HHV) of the fuel is 50.02 MJ/kg.

Thermodynamics: Please show step by step solution for the following Practice problem

Sketch and label the nozzle. Sketch and label the process on a P-v diagram, also mention all numbers on the process of P-V diagram please. 7.15 The exit nozzle in a jet engine receives air at 1200 K, 150 kPa with negligible kinetic energy. The exit pressure is 80 kPa, and the process is reversible and adiabatic. Use constant specific heat at 300 K to find the exit velocity.