BOMI. Air Handling, Water Treatment &
Plumbing Systems
BOMI - answerAir Handling, Water Treatment & Plumbing System
Chapter 1 - answerHuman Comfort
Review Quiz 1 - answer
1 - The rate of exchange of fresh air for returned air in an air conditioning-system is
based on the period of time covered and the number of building: - answerOccupants
2 - All of the 3 following are methods of heat - answerRadiation
Convection
Conduction
NOT Reduction
3 - Which heat load source is most likely to affect all zones of a building? -
answerLighting equipment
4 - To compensate for heat gain from office equipment in modern office building, air-
conditioning systems have been designed to offset how many watts per square foot? -
answer1 to 3 Watts per square foot.
5 - The leftover heat in a building from the day before is the: - answerPull-down load
6 - What exists when the temperature and relative humidity of a person's environment
permit the person to lose metabolic heat at the same rate he or she produces it? -
answerThermal comfort
7 - Why is it most important to air-condition with sedentary people? - answerThey think
about their comfort more
8 - How is sensible heat measured? - answerDry-bulb thermometer
9 - What type of heat is released or used during a change of state between solid, liquid,
and gas? - answerLatent heat
10 - Which of the following affects the amount of water vapor the atmosphere can hold?
- answerAir temperature
,11 - Which of the following is true about mechanical refrigeration cycle air flows? -
answerAir flows from higher pressure to lower pressure
12 - Boyle's law states: - answerAs Pressure goes up, volume goes down.
13 - Maintaining temperature and ___Blank___ have a direct impact on maintaining
human comfort. - answerHumidity
14 - How does introducing air-conditioned and filtered air at a positive pressure into a
building help building comfort? - answerIt causes the outward escape of air, limiting
infiltration.
Chapter 1 Key Concept - answer
1 - What is the relationship between thermal comfort and metabolic heat? -
answerThermal comfort exists when the temperature and relative humidity of a persons
environment permit the person to lose, without conscious effort, metabolic heat at the
same rate he or she produces it.
2 - What occupant activity level is chosen when engineers design an air-conditioning
system? - answeraverage and peak activity levels
3 - What is the rate of exchange of fresh air for return air based on in an air-conditioning
system? - answerThe rate of exchange of fresh air for returned air is based on the
quantity of fresh air required for each building occupant over the course of time.
4- Define heat - answerHeat is a form of energy which cannot be destroyed only
transformed or moved.
Heat is added to conditioned air in the winter and removed in the summer. No shit.
5 - What happens to the rate of heat transfer if the difference in temperature increases?
- answerthe rate of heat transfer Increases if the difference in temperature increases
6 - What are three methods in which heat is transferred? - answerConvection
Conduction
Radiation
7 - Define conduction - answerThe direct transfer of heat from one body to another.
Define connvection - answerThe transfer of heat using a substance
Define radiation - answerHeat that an object throws off to its surroundings.
8 - Define sensible heat - answerA measure of the internal heat of a substance.
,No change in state or physical property.
9 - Define latent heat - answerThe energy that is used or released during the change in
state.
10 - Define relative humidity - answerThe amount of water vapor held in the air
11 - Does moist air have more or less density than dry air? - answerMoist air has less
mass than dry air and is less dense than dry air.
12 - What is the atmospheric pressure of air at sea level? - answer14.7 psi
13 - Explain Charles' law: - answerCharles law explains why gases expand when
heated and contract when cooled.
14 - Explain Boyle's law - answerBoyle's law states that a constant temperature, as the
volume increases, the pressure decreases.
15 - How does the human body regulate temperature? - answerSweating when
overheating too cool down.
16 - What system produces the most heat in a building? - answerZoning HVAC system?
Maybe look into this one.
17 - What are the four main categories of internal heat loads? - answerPeople Heat
Load
Lighting Heat Load
Equipment Heat Load
System Heat Load
18 - How have office building HVAC systems been designed to compensate for heat
gain from office equipment? - answerAir conditioning systems have been designed to
offset one to three watts per square foot.
19 - What is pull-down load? - answerHeat left over from the day before must be
removed the following morning when the air conditioning system is restarted.
20 - How can the problem of air and water vapor infiltration into a building be solved? -
answerTo reduce infiltration problems, ventilation air should be introduced through the
air conditioning system in constant quantities to maintain a slight positive pressure
within the building.
The pressure cases an outward escape of air through cracks, windows, and doors,
limiting infiltration.
, Chapter 2 - answerAir Properties and Heat Doctor
Review Quiz 2 - answer
1 - Absolute pressure is equal to standard sea-level plus: - answerGauge pressure
2 - It is unusual for an air-conditioning system to exceed how many p.s.i.g or p.s.i.a? -
answer0.5 psig
3 - The pressure of the air being pushed against the inside walls of a closed duct by a
fan is called: - answerStatic pressure
4 - The pressure that is created when air moved is called: - answerVelocity pressure
5 - Velocity pressure is found by subtracting: - answerStatic pressure from total
pressure
6 - A pressure drop is the difference in air pressure between where air enters a device
and: - answerWhere the air leaves the device
7 - When designing a duct system, it is important to remember that directional changes
increase friction and __Blank__ efficiency. - answerReduce
8 - The higher the airflow velocity in a duct work system is, the more __Blank__ will be
generated, and the power efficiency will increase. - answerNoise
9 - Which material used to construct duct work is prohibited from use in hospitals and
kitchens by many local codes, and has been declared a possible carcinogenic to
humans by the World health Organization? - answerFibrous glass wool
10 - A draft exists when room air movement aka velocity is at or above how many fpm?
- answer50 fpm
11 - Airflow in a duct system is regulated by air volume control devices called: -
answerDampers
12 - A silencer is a specially designed duct component that reduces noise made in the
duct by: - answerChanging airflow characteristics
13 - Which type of building is the perimeter loop system ideal for? - answerSingle-story
buildings with concrete slab floors.
14 - All of the following factors that influence the amount of ventilating air required: -
answerThe number of people occupying the space
The activities performed in the space
The volume of the space
Plumbing Systems
BOMI - answerAir Handling, Water Treatment & Plumbing System
Chapter 1 - answerHuman Comfort
Review Quiz 1 - answer
1 - The rate of exchange of fresh air for returned air in an air conditioning-system is
based on the period of time covered and the number of building: - answerOccupants
2 - All of the 3 following are methods of heat - answerRadiation
Convection
Conduction
NOT Reduction
3 - Which heat load source is most likely to affect all zones of a building? -
answerLighting equipment
4 - To compensate for heat gain from office equipment in modern office building, air-
conditioning systems have been designed to offset how many watts per square foot? -
answer1 to 3 Watts per square foot.
5 - The leftover heat in a building from the day before is the: - answerPull-down load
6 - What exists when the temperature and relative humidity of a person's environment
permit the person to lose metabolic heat at the same rate he or she produces it? -
answerThermal comfort
7 - Why is it most important to air-condition with sedentary people? - answerThey think
about their comfort more
8 - How is sensible heat measured? - answerDry-bulb thermometer
9 - What type of heat is released or used during a change of state between solid, liquid,
and gas? - answerLatent heat
10 - Which of the following affects the amount of water vapor the atmosphere can hold?
- answerAir temperature
,11 - Which of the following is true about mechanical refrigeration cycle air flows? -
answerAir flows from higher pressure to lower pressure
12 - Boyle's law states: - answerAs Pressure goes up, volume goes down.
13 - Maintaining temperature and ___Blank___ have a direct impact on maintaining
human comfort. - answerHumidity
14 - How does introducing air-conditioned and filtered air at a positive pressure into a
building help building comfort? - answerIt causes the outward escape of air, limiting
infiltration.
Chapter 1 Key Concept - answer
1 - What is the relationship between thermal comfort and metabolic heat? -
answerThermal comfort exists when the temperature and relative humidity of a persons
environment permit the person to lose, without conscious effort, metabolic heat at the
same rate he or she produces it.
2 - What occupant activity level is chosen when engineers design an air-conditioning
system? - answeraverage and peak activity levels
3 - What is the rate of exchange of fresh air for return air based on in an air-conditioning
system? - answerThe rate of exchange of fresh air for returned air is based on the
quantity of fresh air required for each building occupant over the course of time.
4- Define heat - answerHeat is a form of energy which cannot be destroyed only
transformed or moved.
Heat is added to conditioned air in the winter and removed in the summer. No shit.
5 - What happens to the rate of heat transfer if the difference in temperature increases?
- answerthe rate of heat transfer Increases if the difference in temperature increases
6 - What are three methods in which heat is transferred? - answerConvection
Conduction
Radiation
7 - Define conduction - answerThe direct transfer of heat from one body to another.
Define connvection - answerThe transfer of heat using a substance
Define radiation - answerHeat that an object throws off to its surroundings.
8 - Define sensible heat - answerA measure of the internal heat of a substance.
,No change in state or physical property.
9 - Define latent heat - answerThe energy that is used or released during the change in
state.
10 - Define relative humidity - answerThe amount of water vapor held in the air
11 - Does moist air have more or less density than dry air? - answerMoist air has less
mass than dry air and is less dense than dry air.
12 - What is the atmospheric pressure of air at sea level? - answer14.7 psi
13 - Explain Charles' law: - answerCharles law explains why gases expand when
heated and contract when cooled.
14 - Explain Boyle's law - answerBoyle's law states that a constant temperature, as the
volume increases, the pressure decreases.
15 - How does the human body regulate temperature? - answerSweating when
overheating too cool down.
16 - What system produces the most heat in a building? - answerZoning HVAC system?
Maybe look into this one.
17 - What are the four main categories of internal heat loads? - answerPeople Heat
Load
Lighting Heat Load
Equipment Heat Load
System Heat Load
18 - How have office building HVAC systems been designed to compensate for heat
gain from office equipment? - answerAir conditioning systems have been designed to
offset one to three watts per square foot.
19 - What is pull-down load? - answerHeat left over from the day before must be
removed the following morning when the air conditioning system is restarted.
20 - How can the problem of air and water vapor infiltration into a building be solved? -
answerTo reduce infiltration problems, ventilation air should be introduced through the
air conditioning system in constant quantities to maintain a slight positive pressure
within the building.
The pressure cases an outward escape of air through cracks, windows, and doors,
limiting infiltration.
, Chapter 2 - answerAir Properties and Heat Doctor
Review Quiz 2 - answer
1 - Absolute pressure is equal to standard sea-level plus: - answerGauge pressure
2 - It is unusual for an air-conditioning system to exceed how many p.s.i.g or p.s.i.a? -
answer0.5 psig
3 - The pressure of the air being pushed against the inside walls of a closed duct by a
fan is called: - answerStatic pressure
4 - The pressure that is created when air moved is called: - answerVelocity pressure
5 - Velocity pressure is found by subtracting: - answerStatic pressure from total
pressure
6 - A pressure drop is the difference in air pressure between where air enters a device
and: - answerWhere the air leaves the device
7 - When designing a duct system, it is important to remember that directional changes
increase friction and __Blank__ efficiency. - answerReduce
8 - The higher the airflow velocity in a duct work system is, the more __Blank__ will be
generated, and the power efficiency will increase. - answerNoise
9 - Which material used to construct duct work is prohibited from use in hospitals and
kitchens by many local codes, and has been declared a possible carcinogenic to
humans by the World health Organization? - answerFibrous glass wool
10 - A draft exists when room air movement aka velocity is at or above how many fpm?
- answer50 fpm
11 - Airflow in a duct system is regulated by air volume control devices called: -
answerDampers
12 - A silencer is a specially designed duct component that reduces noise made in the
duct by: - answerChanging airflow characteristics
13 - Which type of building is the perimeter loop system ideal for? - answerSingle-story
buildings with concrete slab floors.
14 - All of the following factors that influence the amount of ventilating air required: -
answerThe number of people occupying the space
The activities performed in the space
The volume of the space
