Bundle: Refrigeration and Air Conditioning Technology, 8th + MindTap HVAC, 2 terms (12 months) Printed Access Card
8th Edition
ISBN: 9781337190336
Author: TOMCZYK
Publisher: CENGAGE L
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Chapter 42, Problem 9RQ
If an air-conditioning system was being designed for usein Nogales, Arizona, what temperature difference would be used for calculations?
A. 21°F
B. 68°F
C. 75°F
D. 96°F
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Two rods (fins) having same dimensions, one made of brass(k=85 m
K) and the other of copper (k = 375 W/m K), having one of their ends inserted
into a furnace. At a section 10.5 cm a way from the furnace, the temperature
brass rod 120°C. Find the distance at which the same temperature would be
reached in the copper rod ? both ends are exposed to the same environment.
22.05
ofthe
The composite wall of oven with A= 1m² as in Fig.1 consists of three materials,
two of with kA = 20 W/m K and kc = 50 W/m K with thickness, LA=0.3 m, L= 0.15 m and
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T4 300 K, and an oven air temperature of To=1100 K, h=25 W/m². K. Determine kɛ and
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Chapter 42 Solutions
Bundle: Refrigeration and Air Conditioning Technology, 8th + MindTap HVAC, 2 terms (12 months) Printed Access Card
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