BOMA-HVAC CORRECT QUESTIONS & ANSWERS
2024 LATEST UPDATE
laminar flow - ANSWER - A streamline or viscous flow.
- layers of water flowing over one another at different speeds with virtually no mixing between layers.
- Fluid particles move in definite and observable paths or stream lines.
- The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a
significant part.
turbulent flow - ANSWER Irregular movement of particles of the fluid.
What do you use to determine quantity of air flowing through the duct? - ANSWER CFM
What do you use to determine the speed, rate or velocity of air flow through a duct? - ANSWER FPM
What is the standard that had been used in determining the amount of airflow in relation to refrigeration
effect (tonnage)? - ANSWER 400 CFM per ton of cooling
What is it recommended that you keep your facilities humidity levels? - ANSWER 30%-50%
Try to aim for 45%
What are the recommended summer and winter temperatures? - ANSWER Summer- 73 to 79
Winter- 68 to 74
Metabolic rate - ANSWER Everybody produces heat differently
Psychrometry - ANSWER - Looking at the interaction (relationship) of the moisture ( humidity) and the air
itself.
- how the air is moving or transferring heat through the building.
, Dry Bulb - ANSWER The temperature reading found on a typical thermometer.
What is the difference between heat and temperature? - ANSWER Heat is a form of energy, while
temperature is how hot or cold something is.
Newton's law of cooling - ANSWER The rate of heat loss of a body is proportional to the difference in
temperatures between the body and its surroundings.
Effective - ANSWER The temperature at which motionless saturated air would induce The same sensation
of comfort as that induced by the actual conditions of temperature, humidity, and air movement.
Wet-bulb depression - ANSWER The difference between the dry bulb and the wet bulb temperature
readings.
What percentage of nitrogen is in the air? - ANSWER 78.08%
What percentage of oxygen is in the air? - ANSWER 20.95%
What percentage of water is in the air? - ANSWER 0 to 4%
What percentage of argon is in the air? - ANSWER 0.93%
What percentage of carbon dioxide is in the air? - ANSWER 0.0360
What percentage of neon is in the air? - ANSWER 0.0018%
What percentage of helium is in the air? - ANSWER 0.0005%
What percentage of methane is in the air? - ANSWER 0.00017
2024 LATEST UPDATE
laminar flow - ANSWER - A streamline or viscous flow.
- layers of water flowing over one another at different speeds with virtually no mixing between layers.
- Fluid particles move in definite and observable paths or stream lines.
- The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a
significant part.
turbulent flow - ANSWER Irregular movement of particles of the fluid.
What do you use to determine quantity of air flowing through the duct? - ANSWER CFM
What do you use to determine the speed, rate or velocity of air flow through a duct? - ANSWER FPM
What is the standard that had been used in determining the amount of airflow in relation to refrigeration
effect (tonnage)? - ANSWER 400 CFM per ton of cooling
What is it recommended that you keep your facilities humidity levels? - ANSWER 30%-50%
Try to aim for 45%
What are the recommended summer and winter temperatures? - ANSWER Summer- 73 to 79
Winter- 68 to 74
Metabolic rate - ANSWER Everybody produces heat differently
Psychrometry - ANSWER - Looking at the interaction (relationship) of the moisture ( humidity) and the air
itself.
- how the air is moving or transferring heat through the building.
, Dry Bulb - ANSWER The temperature reading found on a typical thermometer.
What is the difference between heat and temperature? - ANSWER Heat is a form of energy, while
temperature is how hot or cold something is.
Newton's law of cooling - ANSWER The rate of heat loss of a body is proportional to the difference in
temperatures between the body and its surroundings.
Effective - ANSWER The temperature at which motionless saturated air would induce The same sensation
of comfort as that induced by the actual conditions of temperature, humidity, and air movement.
Wet-bulb depression - ANSWER The difference between the dry bulb and the wet bulb temperature
readings.
What percentage of nitrogen is in the air? - ANSWER 78.08%
What percentage of oxygen is in the air? - ANSWER 20.95%
What percentage of water is in the air? - ANSWER 0 to 4%
What percentage of argon is in the air? - ANSWER 0.93%
What percentage of carbon dioxide is in the air? - ANSWER 0.0360
What percentage of neon is in the air? - ANSWER 0.0018%
What percentage of helium is in the air? - ANSWER 0.0005%
What percentage of methane is in the air? - ANSWER 0.00017
