HEATING, VENTILATING,+AC ANAL...EBOOK>I<
6th Edition
ISBN: 2819480255750
Author: Mcquiston
Publisher: INTER WILE
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Textbook Question
Chapter 1, Problem 1.15P
Repeat Problem 1-10 for air at 10 C, a tube with diameter 25 mm, a stream pressure of 101 kPa, and a tube length of 4 m, and find the heat transfer coefficient in SI units if the heat transfer rate is 1250 W.
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The diameter of the tube is 25 mm.
The specific heat of water is 4.18 kJ/kg. °C.
The overall heat transfer coefficient is 0.7 kW/m².°C.
1.Cmin
2.Maximum heat transfer rate
3.Heat transfer surface area
Q2:-
A sphere made of pure copper, which is 13 mm in diameter, is 70 °C (at
t=0) when it inserted into a gas having a temperature of 25 °C. After 65
s the temperature of the sphere reach 60 °C. Make the appropriate
assumption to find the heat transfer coefficient of the gas. What is the
temperature of the sphere after 80 s.
(A;=TT D2, V= TT D³/6, Lc=V/ A,)
Write legibly, provide manual step by step solution, and diagram for below given problem.
Saturated steam at 500oK flows in a 0.20 m inside diameter, 0.21 m outside diameter pipe. The pipe is covered with 0.08 m of insulation with a thermal conductivity of 0.10 W/m-K. The pipe’s conductivity is 52 W/m-K. The ambient temperature is 300oK. The unit convective coefficients are h1 = 18,000 W/m2-K and ho = 12 W/m2-K. Determine the heat loss from 4 m of pipe.
a. 778.21 watts b. 825.80 watts c. 830. 80 watts d. 835.80 watts
Chapter 1 Solutions
HEATING, VENTILATING,+AC ANAL...EBOOK>I<
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