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 35, Problem 9RQ
For a room to be comfortable, the following conditions are considered average:
____°F dry-bulb and ______% relative humidity.
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Define absolute humidity and relative humidity. When an air conditioner is operated insummer, lots of water needs to be drained out from it. Briefly explain this situation inrelation to psychrometry.
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Chapter 35 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 35 - Name the four comfort factors.Ch. 35 - State three ways the body gives off heat.Ch. 35 - Lower room temperatures can be offset in winter by...Ch. 35 - Perspiration cools the body by________.Ch. 35 - Relative humidity is measured using a A....Ch. 35 - Name the two unknowns that are easiest to obtain...Ch. 35 - Air that contains all of the moisture that it can...Ch. 35 - In order for an air-conditioning coil to remove...Ch. 35 - For a room to be comfortable, the following...Ch. 35 - With a dry-bulb reading of 70F and a wet-bulb...
Ch. 35 - Relative humidity in question 10 is _______%.Ch. 35 - A gas furnace has an output of 60,000 Btu/h. The...Ch. 35 - A house has 3500ft2 of floor space and a 9-ft...Ch. 35 - If the fresh-air requirements for the house in...Ch. 35 - If the outside fresh-air conditions were to be 93F...Ch. 35 - If the air leaving the cooling coil were to be 55F...Ch. 35 - Using the answers from questions 14, 15, and 16,...Ch. 35 - Describe why fresh air is important in a house.
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Relative humidity in question 10 is _______%.arrow_forwardRelative humidity is measured using a A. thermotyporiter. B. sling psychrometer. C. dry-bulb thermometer. D. volt-ohmmeter.arrow_forwardThe relative humidity in heated homes is generally the _____in the winter season. A. highest B. lowestarrow_forward
- It is common to place an evaporator in a position a) close to the ground b) near the ceiling The humidity present in the air is related to this type of energy. b) latent heat a) sensible heat c) potential energyarrow_forwardIn air-conditioning, how are two or more streams of air mixed? typwrittenarrow_forwardDrain-down systems would best be used in which geographic area? A. Colder climates B. Warmer climates C. Climates with very low humidity D. Climates with very high humidityarrow_forward
- A dry bulb thermometer reads 30 degrees of celsius and wet bulb thermometer reads 24 degree of celsius. What is the relative humidity?arrow_forwardWhat is the purpose for determining or measuring the air humidity? (Question about airconditioning) Clear and Good explanation please. Thanks in advancearrow_forwardIn general, which is the cause of a sea breeze? A) Pressure B) Specific heat C) Heat D) All the abovearrow_forward
- Make decisions concerning needs and types of ventilation for acceptable indoor air quality?arrow_forwardASHRAE standard 62.2 states that the minimum acceptable rate of airflow into and out of a room is 15cfm (cubic feet per minute). If air is supplied at 68°F with a relative humidity of 45%, how many gallons of water (minimum) must be added to a portable room humidifier before you go to sleep if you would like to maintain the room at 65% humidity for 7 hours?arrow_forwardWhile discussing relative humidity: Technician A says that the amount of moisture that air can hold is directly related to the temperature of the air. Technician B says that the colder the air is, the more moisture it can hold. Who is correct?arrow_forward
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