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 29, Problem 6RQ
What is the coil-to-air temperature relationship for an average coil where dehydration is not a factor?
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Using isentropic tables
Recirculated air from the indoor space is 7,500 cfm (75 degrees F dry bulb, 50% RH). Ventilation air from outdoors is 2,500 cfm (95 degrees F dry bulb, 76 degrees F wet bulb). Leaving air off the cooling coil is 10,000 cfm (55 degrees F dry bulb, 90% RH). What is the wet bulb temperature of the indoor air that is being recirculated?
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61.5 degrees
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Identify the amount of enthalpy needed in order to turn steam into 450g h20 (water) that is located at a temperature of 85 degrees Fahrenheit
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Chapter 29 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 29 - What is the first thing a technician should know...Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - When food dehydration is not a factor, the...Ch. 29 - Prob. 4RQCh. 29 - Why is minimum dehydration not used on every job?Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - At what evaporator temperature does an ice maker...Ch. 29 - What is the evaporator coil-to-air relationship...Ch. 29 - What is meant by the term approach when dealing...Ch. 29 - How can an evaporator be tested for efficiency?
Ch. 29 - How can a condenser be tested for efficiency?Ch. 29 - How can a hermetic compressor be tested for...Ch. 29 - A T XV system responds to an overcharge of...Ch. 29 - An automatic expansion valve system responds to an...Ch. 29 - A capillary tube system responds to an overcharge...Ch. 29 - Prob. 16RQCh. 29 - Prob. 17RQCh. 29 - Capillary tube
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