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1. Saturated steam at 1.5 bars condenses inside a horizontal, 75-mm-diameter pipe whose surface is main- tained at 100°C. Assuming low vapor velocities and film condensation, estimate the heat transfer coefficient and the condensation rate per unit length of the pipe.
2. Consider the situation of Problem 10.67 at relatively high vapor velocities, with a fluid mass flow rate of m = 2.5 kg/s.
(a) Determine the heat transfer coefficient and condensation rate per unit length of tube for a mass fraction of vapor of X = 0.2.
(b) Plot the heat transfer coefficient and the condensa- tion rate for 0.1 X 0.3.
consider the ideal vapor compression refrigeration cycle where the refrigerant is r134a. saturated vapor enters the
Air at 300 kPa, 63oC, and a velocity of 423 m/s enters an insulated duct of varying cross-sectional area. The air exits at 150 kPa, 88oC. At the inlet, the cross-sectional area is 6.57 cm2. Assuming the ideal gas model for the air and variable specif..
Discuss any of your actions and/or thought processes
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