A driver applies the brakes on 1,000 kg automobile to stop from a speed of V = (70 + y/2) km/hr. Find the entropy generation assuming an ambient temperature of Tamb = 20oC:                                                                                                 DS = _______ kJ/K (+ 1%) y=95

Q1: An engineer claimed that his device produces two streams of 1 am air (outlet 1) and 1.5 atm (outlet 2) at temperatures of 460 °R and 635 °R, respectively, if he enters 530 °R of the air at 5.1 atm. If the ratio of outlet 2 to outlet 1 is 0.6, justify the engineer's claim. Assume ideal gas process with a constant heat capacity of 0.24 Btu/lb.°R.

Calculate the change of specific entropy, in units of , of water vapor as it passes through a condenser kJ [kg-K from state 1 to 2. P1 = 1 bar Pz = 1 bar X2 = 0.20 X1 = 1

Thermodynamics: Please show me how to solve the given practice problems in step by step solution.

This example focuses on thermodynamics

I have already found the enthalpies for this problem I just need to find the mass flowrate for the air h1 = 317.549 kJ/kg h2 = 114.245 kJ/kg h3 = 0.0159723 kJ/kg h4 = 37.2487 kJ/kg

A  well insulated steam turbine receives steam at temperature T1 = 540 °C and pressure p1= 30 bar. Steam exits the turbine at p2 = 0.7 bar and T2 = 160 °C.  The mass flow rate of the steam at the inlet is 4kg/s. a) Calculate the power generated by the turbine b) Calculate  the rate of entropy production, in kW/K, of the turbine process.  c) Calculate the isentropic efficiency of the steam turbine. You can assume that Potential energy change and kinetic energy change can be neglected. The turbine can be modelled as a control volume at steady state.

Answer asap plss. Thank you. Will rate thankful...

100% 1. Steam enters an insulated turbine at a pressure of 1 MPa and temperature 200°C, and exits at 40°C with a quality of 83%. Determine: a. Power developed (kl/kg) b. Specific entropy change (kJ/kg K)

just the answer no explanation thanks