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More energy is added with the paddle wheel until the pressure increases by 25 kPa. Find the entropy generation (kJ/kg-K) of the process within the piston cylinder device.
26.42 gal/min of 100% sulfuric acid at 25 degrees (C) is mixed with 44.49 gal/min of liquid water at 15 degrees (C). If the heat capacity of the resulting solution is 2.43 kJ/(kg K).
Air initially at a dry-bulb temperature of 45 degrees (C) and hr = 10% is adiabatically humidified to hr = 60%. Determine the adiabatic saturation temperature from the psychrometric chart.
A stream of methanol vapor is used to chill a countercurrently flowing saturated steam in an adiabatic heat exchanger. What is the flow rate of steam in m3/min?
Steam at 10 MPa and 450 degrees (C) enters an adiabatic turbine at 80 m/s and exits at 10 kPa, 92% quality and 50 m/s. The mass flow rate of this stream is 12 kg/s. Determine: The turbine inlet area
The mass of the piston is such that it takes 0.3MPa of pressure to move it. Heat is transferred to the steam until the system volume doubles. Determine: The final temperature.
Determine (a) the quality of steam in the tank at the initial state, (b) the amount of mass that has escaped, and (c) the entropy generation during this process if heat is supplied to the tank from
When the input is 100 kPa, the output is 5 mV and when the input is 1000 kPa, the output is 125 mV. What is the sensitivity of this device?
The atomic weight of copper is 63.5 g/mol. Calculate its theoretical density given that it has FCC crystal structure and has the lattice parameter of 3.61 Aion here.
Draw and label the T-s diagram for the ideal Rankine cycle that you would use to solve this problem. Determine for the cycle the rate of heat transfer to the working fluid passing through the steam ge
At steady state, the cycle develops 40 kW of power with a heat input of 56.67 kW from the high temperature reservoir. Determine the minimum theoretical value of TH required for operating this cycle
If the power generated by the turbine is 4 MW, determine the rate of entropy generation for this process. Assume the surrounding environment is at 25°C.
The amount of mass that has escaped, and (c) the entropy generation during this process if heat is supplied to the tank from a source at 500°C.
Consider two geothermal wells whose energy contents are estimated to be the same. Will the exergies of these wells necessarily be the same? Explain.
Determine the exergy of the energy, assuming an environment temperature of 77°F. Does the source of the heat energy matter in terms of exergy?
Calculate the force required in direct extrusion of 1100-O aluminum (Y=105 MPA) from a diameter of 100mm in to 50mm.
The ratio of specific heats for the working fluid is Y(gema). Given temperature ratio (t) what is the optimal compression ration (r) in this cycle?
Find the nozzle throat area, the Mach numbers before and after the shock, the nozzle areas at the point where the shock occurs and on the exit plane, and the air density on the exit plane of the noz
Mass of beam is 900 lbm and gravity is 32.174 ft/s^2. What is the value of the Force "F" that makes the reaction at A 75% of the reaction at B when the position x = 13 ft.
The static pressure as 55 kPa and stagnation temperature as 95 °C. Estimate the velocity of the stream assuming that the flow is supersonic.
Using a unifrom mesh size deltaX = deltaY, determine the finite difference equations and the nodal temperatures with the Gauss-Seidel iterative method.
What is the "maximum" length of the surface crack you can tolerate for this same component alloy at a stress of 325 MPa? Assume the crack geometric constant to be 1.5?
Calculate the shear stress at Point E. Point E lies on the outer edge of secion CD. Calculate the shear stress at point F. Point F lies on the inner edge of section CD.
What electric output would you estimate for this electric generator? This system is called a combined cycle where you combine a gas turbine with a Rankine cycle.
Air (modeled as an ideal gas) enters a steady state adiabatic turbine at 1200 K and exits at 100 kPa, 700 K. The isentropic efficiency is 0.855. Find: the power per unit mass air flowing (kJ/kg)