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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Chapter 45, Problem 17RQ
To determine
To fill:
The appropriate word in the given sentence.
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Students have asked these similar questions
Choose correct answer:
The purpose of a capillary tube in a refrigeration system is to ___________
A.
Reduce the pressure and not temperature
B.
Reduce the temperature and pressure
C.
Increase the temperature and pressure
D.
Reduce the temperature and not pressure
With the aid of drawing and labels, discuss the operation of the following instruments used to measure volumetric flow:
a. Rotary disk meter
b.Rotary displacement meter
c.Revolving drum condensate meter
d.Piston meter
e. Bellow Gas meter
12. The condenser pressure 600 mm Hg vac. The surrounding condition is at
760 mm Hg. Determine the equivalent condenser pressure in bars absolute.
a. 0.2133
c. 0.6123
b. 0.4313
d. 0.8542
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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- The capillary tube metering device is usually fastened to the______for heat exchange. A. suction line B. compressor discharge line C. liquid linearrow_forwardHow is expansion in hot water pipes handled?arrow_forwardQuestions Steam from the turbine exhausts directly into the (shell/water) of the 1. condenser. 2. As the steam flows down over the tube bundles it gives up (a) point, where it becomes liquid again. until it reaches the (b) 3. True or False a. The main steam condenser for a turbine is usually located below the turbine. b. One routine maintenance procedure frequently done inside a condenser is plugging tubes to clear them of blockage. 4. Name two safety precautions that must be taken before work may be safely performed inside the water boxes of a condenser. a. b. One way of keeping a unit of line if tube leakage is discovered while the unit is in service is the introduction of a biodegradable substance such as to the cooling water. 5.arrow_forward
- Choose correct answer: In a condenser, the vacuum is found to be 2 N/cm2. The barometer reads 735 mm of Hg, then its approximate absolute pressure is ____________ A. 786.47 kPa B. None of the answers given C. 0.078647 N/mm2 D. 786470 N/m2arrow_forwardPlease answer questions g, h, and i. g.Calculate the heat transferred in the condenser. h.Calculate the diameter of the pipe connecting the turbine to the condenser. Design data for the plant shows the following pipe diameters. i. Calculatecooling water flow rate in GPM (‘gallons per minute’)through the condenser if the temperature of the cooling water increases from 13 C to 24 C in the condenser.arrow_forward46. Question The capacity of a Freon 12 refrigeration system with a direct expansion evaporator installed is 8.50 tonnes of refrigeration. Assuming that the refrigeration system is operating under standard conditions of -15°C evaporation & 30"C condensation the power to drive the compressor is 0.922 kw per tonne of refrigeration with a system efficiency of 85%. Determine the compressor displacement.arrow_forward
- What is the unit of flow rate?arrow_forwardName and briefly describe the six classes of leaks.arrow_forwardThe approach temperature for the evaporator isA. the difference between the suction and head pressuresconverted to temperature.B. the difference between the refrigerant boiling temperatureand the suction-line temperature.C. the difference between the refrigerant boiling temperatureand the inlet water temperature.D. the difference between the refrigerant boiling temperatureand the leaving-water temperature.arrow_forward
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