Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 27, Problem 26RQ
A measurement that represents the thermal cooling capacity of ice and also represents the amount of calcium and magnesium in water is
A. hardness.
B. turbidity.
C. alkalinity.
D. scale.
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An Engineer proposes a new temperature scale based on the freezing point of water at 40 deg. B
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As a crystalline material is heated-up it experiences the following structural changes.
Select one:
a.
The volume increases whilst libration magnitudes increase.
b.
The volume decreases whilst libration magnitudes decrease.
c.
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d.
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Q1: Select the correct answer.
up to
A. Resilience is the energy absorbed by the material
a. yield.
b. ultimate sensile stress.
c. fracture.
B. The grain boundaries are
a. less chemically active than grains themselves.
b. the regions of orientation mismatch of the neighbouring grains.
c. classified as linear defects.
C. All polycrystalline materials are considered as isotropic because
a) they have crystallographic direction-mechanical properties independence relation
b) all the crystals' orientations are the same
c) the random direction of many grains cancels the anisotropic effect
D. Dislocations slip process in metallic crystalline materials
a) is essential to explain why the metals exhibit much lower strength than that
theoretically predicted based on metallic bonding.
b) makes metals and alloys brittle.
c) cannot be used to control the mechanical properties of metallic materials
E. The atomic stacking ABCABCABC is for
d) FCC crystal structure
e) BCC crystal structure
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Chapter 27 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 27 - Which type of ice maker has a continuous harvest...Ch. 27 - Which type of ice is made using a gear motor and...Ch. 27 - What would be the symptoms of a defective float on...Ch. 27 - What are the two functions of the dual float...Ch. 27 - Which part of an ice flake machine is most prone...Ch. 27 - List two causes that may lead to auger wobble.Ch. 27 - What is the function of a flush cycle for an ice...Ch. 27 - Name and explain three types of ice bin controls...Ch. 27 - Ice production in an ice flake machine depends...Ch. 27 - Explain the function of weep holes on the...
Ch. 27 - True or False: Stainless steel is often used for...Ch. 27 - Explain what is meant by ice bridging in a...Ch. 27 - Explain the function of the centrifugal pump in...Ch. 27 - What is the function of the ice thickness probe in...Ch. 27 - Prob. 15RQCh. 27 - What is the most common type of defrost during an...Ch. 27 - Explain how liquid floodback to the compressor may...Ch. 27 - Prob. 18RQCh. 27 - Prob. 19RQCh. 27 - Prob. 20RQCh. 27 - Prob. 21RQCh. 27 - One of the quickest and most thorough ways of...Ch. 27 - Prob. 23RQCh. 27 - Prob. 24RQCh. 27 - True or False: Entering-air temperature and water...Ch. 27 - A measurement that represents the thermal cooling...Ch. 27 - A buildup of minerals that forms a flaky coating...Ch. 27 - A method for killing bacteria, viruses, and...Ch. 27 - Prob. 29RQCh. 27 - Prob. 30RQCh. 27 - True or False: A common type of water filtration...Ch. 27 - Prob. 32RQCh. 27 - Prob. 33RQ
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