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A pistonlcylinder device operating in a cycle with steam as the working fluid executes the following steps:Saturated-vapor steam at 20.7 bar is heated at constant pressure to 755.15 K (482°C).
The steam then expands, reversibly and adiabatically, to the initial temperature of 487.15 K (214°C). Finally, the steam is compressed in a mechanically reversible, isothermal process to the initial state. What is the thermal efficiency of the cycle?
Also determine the maximum frequency of undistorted output that the op amp will produce at an amplitude of 3 V.
If the down time per cycle for emptying, cleaning, and recharging is 6 h, how long should the evaporator be operated between cleanings in order to obtain the maximum amount of product per 30 days?
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
For the numerical values I = 10 A,N = 500 turns, g = 5 mm, a = 20 mm, b = 2 mm, and l = 40 mm, find the magnitude of the force. Assume infinite permeability of the core and neglect leakage.
A W12x22 structural steel wide-flange section of ASTM A36 steel is used as an axially loaded column. Find the allowable axial compressive load using Euler's formula and a factor of safety of 2.0. The column is pin connected at both ends and is 15 ..
determine the amount of heat and work, and the change in enthalpy and internal energy. Compare with the steam tables and discuss.
Carbon dioxide can be separated from other gases by preferential absorption into an amine solution. The carbon dioxide can be recovered by heating at atmospheric pressure. Suppose pure CO2 vapor is available from such a process at 80°C and 1 bar. Sup..
Calculate the fraction of water that is condensed from the air, the relative humidity of the air at 100°C, and the ratio m3 outlet air at 100°C/m3 feed air at 90°C.
Burning the coke deposited on the catalyst particles generates all the heat necessary for catalytic cracking. Therefore, the coke burning rate is a critical parameter to control the rate of cracking. The composition of dry flue gas from the regenerat..
Determine the molar free energy of vaporization, Delta vapG, for benzene at 75 C and 1 bar given that the molar enthalpy of vaporization of benzene at its normal boiling point of 80.09 C and 1 bar is 30.72 kJ⋅mol-1.
1. In this problem, you learn how to apply the energy balance to a closed system containing an ideal gas with constant Cpfor 3 different processes.
Find the current I1 through the 20-Ω resistor of the circuit of Figure P2.2.8 by both mesh and nodal analyses.
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