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 45, Problem 1RQ
The typical temperature inside the fresh-food compartment in a domestic refrigerator is
A. 25°F to 30°F.
B. 30°F to 35°F.
C. 35°F to 40°F.
D. 40°F to 45°F.
Expert Solution & Answer
To determine
The correct option for the given statement.
Answer to Problem 1RQ
The correct option for the given statement is option(C) i.e.
Explanation of Solution
At normal room temperature, the typical temperature inside the fresh food compartment of a domestic refrigerator is similar to the temperature of the air that is returned to the evaporator coil and typically it may be
Important terms used in domestic refrigerators:
- The single compressor in a household refrigerator operates under conditions at lowest box temperature, which is typically -10 to +5 Degrees F.
The two types of evaporators are used in household refrigerators are natural draft or force draft.
- Domestic freezers are considered as a separate compartment in a refrigerator or a separate appliance. Domestic freezers are of two types:
- Domestic refrigerator compressors are reciprocating or rotary type and welded hermetically sealed compressors are normally used in household refrigerators.
- Condensers in these refrigerators are all air cooled.
- The fresh food compartment of a domestic refrigerator represents about
(i). Upright type freezers
(ii). Chests type freezers.
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Students have asked these similar questions
A domestic refrigerator sits in a kitchen, switched on, with the refrigerator door wide open.
The kitchen itself is well insulated and it can be assumed no heat can escape or enter the kitchen from the outside.
Which of the following is the most accurate statement.
а.
The temperature in the kitchen will stay the same.
O b. The temperature in the kitchen could go up or down depending on the mechanical efficiency of the compressor.
O c.
The temperature in the kitchen will go down very slightly.
d. The temperature in the kitchen could go up or down, depending on the Coefficient of Performance (COP) of the refrigerator.
е.
The temperature in the kitchen will go up very slightly.
A 1-ton air conditioner is a unit that will remove the amount of heat neededto melt one ton of ice in 24 hours. A ton has 2,000 pounds in it.a. If 144 Btu of heat are needed to melt 1 pound of ice, how many Btus woulda 1-ton air conditioner remove in 24 hours?b. How many Btus would a 1-ton air conditioner remove in 1 hour?
A newly installed refrigeration system produces 250 Btu/lb of cooling.
Calculate the mass of refrigerant shall be used in the refrigeration
system to have a rating of one ton of refrigeration.
A. 1152 lb/day
B. 160 lb/hr
B. 1780 lb/day
D. 380 lb/hr
Chapter 45 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
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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