Modern Refrigeration and Air Conditioning - Section 1 - Workbook Problems
How many Btu per hour is equivalent to one ton of refrigeration? - pg 69
12,000
Force - pg 57
Energy applied to matter that causes a change in the matter's velocity is called _________.
Btu - pg 62
Provide the proper abbreviation for - British thermal unit
Relative density - pg 57
The ratio of the mass of a certain volume of a gas as compared to the mass of an equal volume of hydrogen is called _________.
Specific volume - pg 57
The volume of a specific amount of gas under standard conditions is referred to as ___________.
m - meter - pg 56
What is the base SI unit for distance?
lb - pounds - pg 56
What is the base unit for mass in the US Customary measurement system?
Ambient - pg 62
_______ temperature is the temperature of the air surrounding an object.
Formula for determining a density with a given mass and volume? - pg 57
= m / V
Fahrenheit - pg 62
A Btu is the amount of heat required to raise the temperature of one pound of water on degree ___________.
Atmospheric - pg 77
Absolute pressure is gauge pressure plus ________ pressure.
To determine the total pressure of a mixture of oxygen and hydrogen, you must ________ the pressure of each of the two gases. - pg 83
According to Dalton's Law it need to be added together.
Law of Conservation of Energy - pg 56
Energy can be changed from one form to another.
What is latent heat? - pg 67
Heat that brings about a change of the state with no change in temperature.
What is sensible heat? - pg 67
Heat that causes a change in the temperature of a substance.
Air exchange - pg 84
In ____ _______, heat transfers from warm air to a cooler surface without causing a state change.
Using the combined gas law, explain that will happen to the volume of a gas if its pressure remains constant while its temperature increases. - pg 82
Its pressure or volume must also increase.
Convection - pg 65
Name the method of heat transfer for a force air furnace.
Radiation - pg 65
Name the method of heat transfer for an electric space heater.
Conduction - pg 65
Name the method of heat transfer for an electric stove top.
Solid, Liquid, and Gas - pg 66
Name the three physical states of a substance.
Pounds per square inch - pg 74
Often expressed in psi, the term for force per unit of area is ________.
Heat insulator - pg 66
Poor conductors of heat are also known as _________.
°C - pg 60
Provide the proper abbreviation for - Degrees Celsius
°F - pg 60
Provide the proper abbreviation for - Degrees Fahrenheit
Hg - pg 78
Provide the proper abbreviation for - Inches of mercury
J - pg 62
Provide the proper abbreviation for - Joules
lbm - pg 63
Provide the proper abbreviation for - Pound mass
lbf - pg 58
Provide the proper abbreviation for - Pounds of force
psia - pg 77
Provide the proper abbreviation for - Pounds per square inch absolute
psig - pg 77
Provide the proper abbreviation for - Pounds per square inch gauge
W - pg 58 & 59
Provide the proper abbreviation for - Watt
adiabatic - pg 75
Refrigerant passing through a compressor quickly undergoes __________ compression, which means it is compressed without losing heat to its surroundings.
What is a ton of refrigerant? - pg 68 & 69
Represents the amount of heat energy absorbed when a ton of ice melts during one 24-hour day.
Rankine - pg 60
The absolute scale that uses the same divisions as the Fahrenheit scale is called the __________ scale.
Critical Temperature - pg 76
The highest temperature at which a substance may liquefy, regardless of pressure, is called its _________.
Heat always flows from a substance at a - pg 60
higher temperature to a substance at a lower temperature.
The temperature at which a liquid boils depends on _________ - pg 75
its pressure.
According to Boyle's Law, if the volume of a gas is doubled, its pressure is __________. - pg 81
reduced by half. (inverse when the temperature remains constant)
