REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
8th Edition
ISBN: 9781337370042
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 4, Problem 1RQ
Where would a technician encounter freezing temperatures when working with liquid refrigerant?
Expert Solution & Answer
To determine
The condition where the technician will encounter the freezing temperatures while working with liquid refrigerant.
Answer to Problem 1RQ
A technician will encounter a freezing temperature when the liquid refrigerant gets mixed with the atmosphere and absorbs the heat to produce a cooling effect.
Explanation of Solution
While working with the liquid refrigerants, it is essential to take preventions before doing any operation with liquid refrigerants. Liquid refrigerants can be harmful in nature. Liquid refrigerant can cause a high temperature drop, if it leaks out of the cylinder.
When liquid refrigerant leaks out from the cylinder it produces a drop in local temperature as, the liquid refrigerant absorbs heat from the surroundings and cool it down to a lower temperature.
As a technician is working with liquid refrigerant, he will feel a freezing temperature when there is a leak in cylinder.
Conclusion:
Thus, a technician will encounter a freezing temperature when the liquid refrigerant gets mixed with the atmosphere and absorbs the heat to produce a cooling effect.
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B:
Find the numerical solution for the 2D equation below and calculate the temperature values for
each grid point shown in Fig. 2 (show all steps).
(Do only one trail using following initial values and show the final matrix)
[T1]
T₂
T3
[T] 1
=
[0]
0
0
d
dx
dx)
(ka)+4(ka)
=
dy
-20xy, k = 1 + 0.3 T
ge
L=3cm, 4x= Ay
B.Cs.:
at x=0=LT=0°C
at y=0-L T=10°C
Fig. (2)
: +0
العنوان
use only
Two rods fins) having same dimensions, one made orass (k = 85 Wm
K) and the mer of copper (k = 375 W/m K), having of their ends inserted
into a furna. At a section 10.5 cm a way from furnace, the temperature of
brass rod 120 Find the distance at which the ame temperature would be
reached in the per rod ? both ends are ex osed to the same environment.
ns
2.05
۲/۱
ostrar
Chapter 4 Solutions
REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
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