Refrigeration and Air Conditioning Technology - Package
8th Edition
ISBN: 9781337217989
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 10, Problem 15RQ
A service technician is charging an air-conditioning system that has a TX V as the metering device using the subcooling method of charging. The high-side saturation temperature is 110°F and the unit's technical manual specifies 10°F of liquid subcooling. What would thedesired liquid-line temperature be at the condensing unit?
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Chapter 10 Solutions
Refrigeration and Air Conditioning Technology - Package
Ch. 10 - How can liquid refrigerant be added to the...Ch. 10 - How is the refrigerant cylinder pressure kept...Ch. 10 - Why does the refrigerant pressure decrease in a...Ch. 10 - What type of equipment normally has the...Ch. 10 - Why are digital scales preferred over other types...Ch. 10 - How does a graduated cylinder account for the...Ch. 10 - What methods besides weighing and measuring are...Ch. 10 - Two or more refrigerants combined together to...Ch. 10 - Define temperature glide, and give examples of...Ch. 10 - A portion of a refrigerant blend that is...
Ch. 10 - What is the main difference between a zeotropic...Ch. 10 - What is meant by "restricting" liquid refrigerant...Ch. 10 - What causes fractionation in certain refrigerant...Ch. 10 - When should a service technician use the...Ch. 10 - A service technician is charging an...Ch. 10 - A technician takes the following readings on an...
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- A technician takes the following readings on an R-404A refrigeration system: Head pressure = 205 psig Suction pressure = 30 psig Condenser outlet temperature = 80F Evaporator outlet temperature = 10F Using the pressure/temperature chart in Figure 10.25, find the condenser subcooling and evaporator superheat amounts.arrow_forwardThe condensing pressure is 260 psig and the meteringdevice inlet temperature is 100F for R-22. What is the total subcooling in this system? A. 15F B. 20F C. 25F D. 30Farrow_forwardGeneral types of Expansion device and Condenser used in a refrigeration system ?arrow_forward
- 1 The condenser can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 2 The evaporator can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 3 Which loop is eliminated in a direct expansion (DX) system? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 4 What are some benefits of using a "packaged" piece of cooling equipment rather than a "split" system?arrow_forwardThe typical temperature relationship between a standard-efficiency air-cooled condenser and the ambient temperature is A. 50F. B. 40F C. 30F. D. 20F.arrow_forwardWhat advantage does a thermostatic expansion valve have over a capillary tube?arrow_forward
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