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 42, Problem 9RQ
If an air-conditioning system was being designed for usein Nogales, Arizona, what temperature difference would be used for calculations?
A. 21°F
B. 68°F
C. 75°F
D. 96°F
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Chapter 42 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 42 - An oversized air-conditioning system will A. cost...Ch. 42 - Methods used to calculate the heat gain and heat...Ch. 42 - An exterior wall A. separates a conditioned...Ch. 42 - A partition wall A. separates a conditioned...Ch. 42 - As the temperature differential across a panel...Ch. 42 - The typical indoor design temperature used for...Ch. 42 - The typical indoor design temperature used for...Ch. 42 - If a heating system was being designed for use in...Ch. 42 - If an air-conditioning system was being designed...Ch. 42 - If the R-value of a construction material is 2.0,...
Ch. 42 - If a wall is made up of four different materials,...Ch. 42 - Prob. 12RQCh. 42 - All of the following are taken into account on a...Ch. 42 - How much heat is lost through a 3' 5' single-pane...Ch. 42 - Which of the following is(are) true regarding a...Ch. 42 - Which of the following is(are) true regarding the...
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- If a heating system was being designed for use in Modesto, California, what temperature difference would be used for calculations? A. 30F B. 40F C. 50F D. 60Farrow_forwardThe typical indoor design temperature used for heat loss calculations is A. 65F. B. 70F. C. 75F. D. 80F.arrow_forwardMultiple-zone systems often use a(n) __________or a(n)___________to alleviate the problem of excess air when only some zones are calling for conditioning.arrow_forward
- What are mullion heaters?arrow_forwardOne ton of refrigeration is A. 1200 Btu. B. 12,000 Btu/h. C. 120,000 Btu. D. 120,000 Btu/h.arrow_forwardO a. None of these O b. Absolute pressures and heat capacity ratio O C. Absolute pressures and temperatures O d. Gauge pressures and temperatures In perfect gas law experiment, the pressure pump coupling is used to connect the vacuum vessel to the pump discharge connector. Select one: O a. False O b. True Which part in the mechanical heat pump is used to reduce the refrigerant pnessule? Select one:arrow_forward
- Question1. If an air conditioning system has three independent zones, how many space thermostats will the system have? Question 2. A technician is traversing a duct and obtains the following 8 velocity: 500fpm, 400fpm, 375fpm,625fpm,275fpm,360fpm,450fpm,and 575fpm. What is the velocity value that can be used for the system calculations?arrow_forwardWhat does a 1 ton refrigerant represent: a. The weight of the air conditione r b. The amount heat required to cool 1 ton of air in 1 hour c. The amount of heat required to melt 1 ton of ice at 0 degree in 24 hours d. The weight of the refrigerant used.arrow_forwardDifferent types of air conditioning system.arrow_forward
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