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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QUESTION 1
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coolant, in Btu/hr?
O1,440,000
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QUESTION 2
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Oa. 72.8%
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Oc 92.9%
Od.63.4%
QUESTION 3
If fuel oil is supplied to a power plant furnace at a rate of 60,000 gallons/hr, and the oil has a heating value of 150,000 Btu/gallon,
and the plant has a thermal efficiency of 30%, what is the power output of this plant (in MW)?
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Ob.9000
Oc 2700
d. 791.3
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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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- A 1-ton HVAC unit will remove up to 12,000 Btu/h. What size unit is neededfor a house with a heat load of 28,576 Btu/h? (Round up to the next highereither half or whole number.)arrow_forwardA 73 W freezer has an EER of 10.0. How much heat is exhausted to the room in 2.9 hours? (include units with answer)arrow_forwardWhat is the Btu/hour output of an electric heater rated at 15 kilowatts?a. 51.15 Btu/hourb. 51,150 Btu/hourc. 5115 Btu/hourd. none of the abovearrow_forward
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