Fundamentals Of Engineering Thermodynamics
9th Edition
ISBN: 9781119391388
Author: MORAN, Michael J., SHAPIRO, Howard N., Boettner, Daisie D., Bailey, Margaret B.
Publisher: Wiley,
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Chapter 4, Problem 4.18CU
To determine
The velocity of the water vapor at the exit of the nozzle.
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A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a
rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 lbf/in.², and 180°F, respectively; at the exit the pressure is 90 lbf/in.²
The pump requires 1/15 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58
lb/ft3 and constant specific heat of 1 Btu/lb. °R.
Neglecting kinetic and potential energy effects, determine the temperature change, in °R, as the water flows through the pump.
ΔΤ :
= i 0.36
°R
Refrigerant 134a enters a well-insulated nozzle at 200 Ibf/in.?, 170°F, with a velocity of 120 ft/s and exits at 50 Ibf/in.2 with a velocity
of 1500 ft/s.
For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant
at the exit.
T2 =
i
°F
i
%
X2 =
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.?, 140°F, with a velocity of 120 ft/s and exits at 10 lbf/in.? with a velocity
of 1500 ft/s.
For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant
at the exit.
T =
i
°F
X2 =
Chapter 4 Solutions
Fundamentals Of Engineering Thermodynamics
Ch. 4 - Prob. 4.1ECh. 4 - Prob. 4.2ECh. 4 - Prob. 4.3ECh. 4 - Prob. 4.4ECh. 4 - Prob. 4.5ECh. 4 - Prob. 4.6ECh. 4 - Prob. 4.7ECh. 4 - Prob. 4.8ECh. 4 - Prob. 4.9ECh. 4 - Prob. 4.10E
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- Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.?, 2700°R with a mass flow rate of 0.22 lb/s and exit at 29 lbf/in.2 and 1620°R. If heat transfer from the turbine to its surroundings occurs at a rate of 14 Btu/s, determine the power output of the turbine, in hp. hp W ev iarrow_forwardA turbine, operating under steady-flow conditions, receives X1 kg of steam per hour (For X1 refer Table. 1). The steam enters the turbine at a velocity of 3000 m/min, an elevation of 5 m and a specific enthalpy of 2787 kJ/kg. It leaves the turbine at a velocity of 6000 m/min, an elevation of 1 m and a specific enthalpy of 2259 kJ/kg. Heat losses from the turbine to the surroundings amount to 16736 kJ/h. Determine the power output of the turbine.arrow_forward3. During a reversible process there are abstracted 320KJ/s of heat from 1.23kg/s of a certain gas, with Cp=2.232 and Cv= 1.713 Kj/Kg-K, while the temp remains constant at 27 C. the initial pressure is 600 Kpa. For steady flow system (AKE= 10kj/s) determine; a. Initial and final volume flow b. Change in internal energy and enthalpy c. Change in entropy d. Work.arrow_forward
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