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 34, Problem 16RQ
The relative humidity in heated homes is generally the _____in the winter season.
A. highest
B. lowest
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Humidification is a process which involves . water vapor per Kilogram of dry air
Select one:
a. Cooling
b. Increasing
c. Reducing
d. Heating
As the Airstream is cooled, the relative humidity _____ and specific volume _____.
A. Decreases, decreases
B. Increase, decreases
C. Decreases, Increases
D. Increase, increase
As the Airstream is cooled and dehumidified, the relative humidity____ and the absolute humidity___
A. Increases , Increases
B. Decreases, Decreases
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Chapter 34 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 34 - List five different sources of indoor air...Ch. 34 - ASHRAE Standard "Ventilation for Acceptable Indoor...Ch. 34 - Radon is a (n) _____, _____, and _____gas.Ch. 34 - Three different biological contaminants are...Ch. 34 - What are two substances molds need in order to...Ch. 34 - Three methods of controlling indoor air...Ch. 34 - If radon gas is suspected, what should be done?Ch. 34 - How does ventilation help to improve air quality?Ch. 34 - Three general types of air cleaners are_______....Ch. 34 - True or False: Carbon monoxide is produced by...
Ch. 34 - Describe the difference between absorption and...Ch. 34 - True or False: Fiberglass filter media is...Ch. 34 - An electrostatic precipitator is the same as A. an...Ch. 34 - The purifier ingredient in an activated charcoal...Ch. 34 - Ion generators_______particles m an area. A....Ch. 34 - The relative humidity in heated homes is generally...Ch. 34 - The recommended relative humidity for a home is...Ch. 34 - True or False: Some humidifiers have their own...Ch. 34 - Static electricity is more commonly a problem when...Ch. 34 - The plenum-mounted humidifier is installed in the...Ch. 34 - Describe the difference between an evaporative and...Ch. 34 - Why is it essential for the furnace to be...
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- For a room to be comfortable, the following conditions are considered average: ____F dry-bulb and ______% relative humidity.arrow_forwardAt what evaporator temperature does an ice maker usually begin to make ice? A. 35F B. 32F C. 25F D. 20Farrow_forwardThe effect of _____ wind speeds generally increase with height above the ground.arrow_forward
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- The atmospheric pressure on the surface of Mars is only 0.007 bar which is less than 1% of the Earth’s atmospheric pressure. What is the main gas in the atmosphere of Mars. A. Carbon Dioxide B. Hydrogen C. Helium D. Nitrogen E. Sulfur Dioxidearrow_forwardIn the case of heating the air with a heating coil, the absolute humidity of the air can either increase, or decrease. does not change. increases. decreases.arrow_forwardCool, dry air always ___________, while warm, moist air always __________ a. falls, falls b. rises, sinks c. sinks, rises d. freezes, meltsarrow_forward
- f. A single-family detached residence of moderate construction has a total sensible load of 53,300 Btu/hr. The design humidity ratio is 0.021 lb of vapor/lb of dry air. Determine the total cooling load.arrow_forwardWhat is the state of water if the pressure is 10 MPa and the specific volume is 0.003 m 3 /kg? a. Ice b. Liquid c. Liquid and vapor mixture d. Vaporarrow_forward7. The relative humidity on a 90°F day is 30 per cent. a. How many pounds of water vapor are in a room 20 ft by 30 ft by 10 ft high? b. What is the weight of the air-water-vapor mixture in the room above? c. Air is discharged from an evaporative cooler at 76°F. What is its relative humidity? d. Will eggs removed from a 45°F storage room "sweat"? Why? e. If the air is humidified isothermally, what is H at saturation?arrow_forward
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