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BOMA-HVAC 1. laminar flow: - A streamline or viscous flow. - layers of water flowing over one another at different speeds with virtually no mixing between layers.$9.99
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BOMA-HVAC 1. laminar flow: - A streamline or viscous flow. - layers of water flowing over one another at different speeds with virtually no mixing between layers.
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Course
Boma HVAC
Institution
Boma HVAC
BOMA-HVAC
1. laminar flow: - A streamline or viscous flow.
- layers of water flowing over one another at different speeds with virtually no mixing
between layers.
1. laminar flowANS
- A streamline or viscous flow.
- layers of water flowing over one another at different speeds with virtually no mixingbetween 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 thefluid plays a significant part.
2. turbulent flowANS
Irregular movement of particles of the fluid.
3. What do you use to determine quantity of air flowing through the duct?ANS
CFM
4. What do you use to determine the speed, rate or velocity of air flow througha duct?ANS
FPM
5. What is the standard that had been used in determining the amount of airflow in relation to refrigeration
effect (tonnage)?ANS
400 CFM per ton of cooling
6. What is it recommended that you keep your facilities humidity levels?ANS
-
30%-50%
Try to aim for 45%
7. What are the recommended summer and winter temperatures?ANS
Summer- 73to 79
Winter- 68 to 74
8. Metabolic rateANS
Everybody produces heat differently
9. PsychrometryANS
- Looking at the interaction (relationship) of the moisture ( humid-ity) and the air itself.
- how the air is moving or transferring heat through the building.
10. Dry BulbANS
The temperature reading found on a typical thermometer.
11. Wet BulbANS
A typical thermometers standard reading if the sensing bulb is cov-ered with a wet wick or sock and exposed to air
flow.
12. Dew PointANS
-At this temperature, moisture starts condensing from the air.
-used to define the level that air can no longer hold extra moisture, it has reached100% capacity.
13. Specific Volume & DensityANS
- measured in cubic feet per pound.
- The amount of space air occupies per pound of weight.
14. Enthalpy ( heat content of a substance)ANS
-The measurement of heat energy.
- measured by BTU.
15. Sensible heat ratioANS
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, BOMA-HVAC
The total sensible heat flow divided by the total heat flow
16. Sensible heat flowANS
Supply air temperature minus conditioned room tempera-ture
17. Moisture content (Humidity Ratio)ANS
The total weight of water vapor per poundof dry air
18. Relative humidityANS
The percentage of water vapor per pound of dry air inrelation to how much the air can hold at its current
temperature
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