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Bomi Air Handling, Water Treatment & Plumbing Systems Passed!!
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Bomi Air Handling, Water Treatment & Plumbing Systems Passed!!
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Bomi: Air Handling, WaterTreatment & Plumbing Systems
Passed!!
BOMI Answer: Air Handling, Water Treatment & Plumbing System
Chapter 1 Answer: Human 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: Answer:
Occupants
2 - All of the 3 following are methods of heat Answer: Radiation
Convection
Conduction
NOT Reduction
3 - Which heat load source is most likely to affect all zones of a building? Answer:
Lighting 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? Answer: 1 to 3 Watts per square foot.
5 - The leftover heat in a building from the day before is the: Answer: Pull-
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? Answer: Thermal comfort
7 - Why is it most important to air-condition with sedentary people? Answer:
They think about their comfort more
8 - How is sensible heat measured? Answer: Dry-bulb thermometer
9 - What type of heat is released or used during a change of state between solid,
liquid, and gas? Answer: Latent heat
10 - Which of the following affects the amount of water vapor the atmosphere
can hold? Answer: Air temperature
11 - Which of the following is true about mechanical refrigeration cycle air flows?
Answer: Air flows from higher pressure to lower pressure
12 - Boyle's law states: Answer: As Pressure goes up, volume goes down.
,13 - Maintaining temperature and ___Blank___ have a direct impact on
maintaining human comfort. Answer: Humidity
14 - How does introducing air-conditioned and filtered air at a positive pressure
into a building help building comfort? Answer: It causes the outward escape
of air, limiting infiltration.
Chapter 1 Key Concept Answer:
1 - What is the relationship between thermal comfort and metabolic heat?
Answer: Thermal 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? Answer: average and peak activity levels
3 - What is the rate of exchange of fresh air for return air based on in an air-
conditioning system? Answer: The 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 Answer: Heat 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? Answer: the rate of heat transfer Increases if the difference in
temperature increases
6 - What are three methods in which heat is transferred? Answer: Convection
Conduction
Radiation
7 - Define conduction Answer: The direct transfer of heat from one body to
another.
Define connvection Answer: The transfer of heat using a substance
Define radiation Answer: Heat that an object throws off to its surroundings.
8 - Define sensible heat Answer: A measure of the internal heat of a
substance.
No change in state or physical property.
9 - Define latent heat Answer: The energy that is used or released during the
change in state.
10 - Define relative humidity Answer: The amount of water vapor held in the
air
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