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 16RQ
The capillary tube metering device is usually fastened to the______for heat exchange.
A. suction line
B. compressor discharge line
C. liquid line
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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
What kind of circuit balancing valve is used in the hot and chilled water piping?
a. balancing globe valve
b. shut-off balancing valve
c. pressure balancing valve
d. pressure by-pass valve
The 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.
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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- How is expansion in hot water pipes handled?arrow_forwardWhy is a circulating brine system more attractive for ship refrigeration than individual evaporators?arrow_forwardA capillary tube system responds to an overcharge of refrigerant by A. high suction pressure. B. high head pressure. C. a flooded compressor. D. all of the abovearrow_forward
- Which metering device is most efficient in heat pumps?A. A thermostatic expansion valveB. An automatic expansion valveC. A capillary tubeD. An orifice or restrictorarrow_forwardGiven the following information about a condenser system, determine the fan power requirement, Fp:1. Emission stream flow rate (Qe,a) = 2050 acfm2. Condenser system pressure drop (P) = 5 in. H2O3. Condenser system operating hours per year (HRS) = 6000 h/yrarrow_forwardDistinguish between Contact condenser and Surface condenser.arrow_forward
- A cascade system is to be designed to attain a temperature of 213K in an environment of 313K. The refrigerant of the high temperature side is R-134-A and that for low side is R-134-A. The condensing temperature of low side is 5K above the evaporator temperature in the cascade. Compute A.Cop. B.pressure Ratio. C.Mass flow rates of each refrigerant. D.Volume flow rate per TOR. with TS Diagram Using this Steam Table:https://docdro.id/VkxK8WHarrow_forwardComponents of pressure intensifier with defined.arrow_forward1. A temperature drop in the coolant entering the primary loop can be dangerous because,(a) Reactivity can increase as a result.(b) Pressure in the primary loop will decrease and water can flash to steam.(c) All of the above.(d) None of the abovearrow_forward
- I need answer in handwrittenarrow_forwardThe type of steady flow system in which, two streams of fluids m1 and m2 are entering and one stream of fluid m3 is leaving, is known as O a. Turbine O b. Nozzle Oc. Mixing chamber O d. Compressorarrow_forwardTwo-phase pipe flow is the simultaneous flow of a gas (or vapor) and a liquid exhibiting ___________physical properties through the same pipe a. same b. fixed c. different d. constantarrow_forward
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