REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
8th Edition
ISBN: 9781337370042
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 45, Problem 2RQ
The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically
A. 0°F
B. -20°F
C. 20°F
D. 40°F
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Students have asked these similar questions
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Ex. The cantilever beam shown is, made from steel with σ = 552 MPa
is subjected to fully reversed load. Neglect shear stress
q
:10 cycles
effect, estimate wheather the beam is safe or not safe at N= los
The beam is machined surface and the operating temp. is 100c.
D
764
L= 10cm
L
D= 1.3 Cm
d = 1 cm
b= 1 cm
momend
diagram
-FL
Ex. The cantilever beam shown us, made ofrem steel with = 552 MPa
is
,
ut
subjected to fully reversed load. Neglect shear stress
effect, estimate wheather the beam is safe or not safe at N= lo cycles
9
The beam is machined surface and the operating temp. is 100C.
A
F
200
a=0
N
-200
N
1
L= 10cm
D
time
764
Yze.25 Gm
L
D= 1.3 cm
d = 1 cm
b= 1 cm
-momend
diagram
AA
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at the root of the cantilever, the bending moment is max.
factor
Ex. Repeat Ex. in page (24), with fluctuating load as shown
below. By = 46242,041 = 552 MPa. Find the safety
(NF) using Modified -Goodman, Gerber, and soderberg criterias
F(N).
....400
time
Example
The bar Shown Is.
subsected to combined loadings as
follows:
P = = 20.KN
F = 0 to 2 KN
T= 0-5 KN.m
The bar material has Se=400 mpa and out = 1379 MPa, Yiu= 1000 mpa
Find the factor of safety, neglect the transverse Shear-
Sol
I load analysis
ар
F
T
Par
= 20 KN
(axial load-
Pmim =
-20 KN
fully reversed
dynamic)
Emark 2km
=
Fmim
= 0
N
(bending loading -dynamic)
Repeated
D=20mm
d=15
mm
r=5mm
L=
=250mm
Chapter 45 Solutions
REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
Ch. 45 - The typical temperature inside the fresh-food...Ch. 45 - The operating condition for the single compressor...Ch. 45 - When the air temperature in a domestic freezer is...Ch. 45 - Typical head pressures should correspond to a...Ch. 45 - Using the temperature/pressure chart in Unit 3,...Ch. 45 - Using the pressure/temperature chart in Unit 3,...Ch. 45 - If a forced-draft evaporator fan motor is wired in...Ch. 45 - Frost accumulates on the evaporators of...Ch. 45 - The defrost cycle in a domestic refrigerator may...Ch. 45 - Prob. 10RQ
Ch. 45 - What are the two types of evaporators found in...Ch. 45 - Refrigerators currently being manufactured in the...Ch. 45 - Condensers in these refrigerators are...Ch. 45 - Home freezers are air-cooled and may have...Ch. 45 - Induced-draft condensers are typically used with...Ch. 45 - The capillary tube metering device is usually...Ch. 45 - Prob. 17RQCh. 45 - If the compressor has liquid refrigerant returning...Ch. 45 - Some freezers may have ______heaters to prevent...Ch. 45 - Welded ______sealed compressors are normally used...Ch. 45 - Special heaters called ______heaters are often...Ch. 45 - Prob. 22RQCh. 45 - Prob. 23RQCh. 45 - The adjustment device used for low atmospheric...Ch. 45 - Prob. 25RQ
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