COSC 325 Houston (Mechanical) || errorless solutions 100%.
What division is mechanical correct answers Division 23
how many Btu/H in a ton correct answers 12000
What is comfortable relative humidity? correct answers 50%
Air velocity correct answers the speed at which air moves from one point to another
what is ideal air movement correct answers 40fpm
What is the most common duct material correct answers sheet metal, measured in gauge (smaller
number thicker material)
Why insulate duct work correct answers Condensation
What is the average CO2 level for good indoor air quality? correct answers 800
Make up air correct answers Air supplied to a space to replace exhausted air
exhaust air correct answers Any foul or unwanted air removed from a space by mechanical
means.
What is the normal building space requirement for fresh outside air correct answers 20 cubic feet
per minute per person in the space
, ASHRAE correct answers American Society of Heating, Refrigerating and Air-Conditioning
Engineers
5 requirements for comfort correct answers proper temperature, humidity, circulation, filtration,
ventilation
Dry Bulb Temperature correct answers the measurement of sensible heat
Relative Humidity (RH) correct answers the amount of water vapor present in air expressed as a
percentage of the amount needed for saturation at the same temperature.
Dew point(dp) correct answers the temperature below which moisture in the air begins to
condense
Enthalpy (h) correct answers The total heat contained in a substance measured from a baseline of
32 degrees farenheit
Where is relative humidity found on a psychometric chart? correct answers the curving lines that
run from the bottom left side of the chart up to the right
forced air system correct answers fuel heats air, which is blown through ducts and vents; cool air
is returned to the furnace to be reheated
Three must common types of furnaces correct answers upflow, horizontal, and downflow
(counterflow)
Upflow Furnace correct answers return air is supplied at the bottom of the unit and the heated air
is delivered to the bonnet above the furnace where it is distributed through ductwork
What division is mechanical correct answers Division 23
how many Btu/H in a ton correct answers 12000
What is comfortable relative humidity? correct answers 50%
Air velocity correct answers the speed at which air moves from one point to another
what is ideal air movement correct answers 40fpm
What is the most common duct material correct answers sheet metal, measured in gauge (smaller
number thicker material)
Why insulate duct work correct answers Condensation
What is the average CO2 level for good indoor air quality? correct answers 800
Make up air correct answers Air supplied to a space to replace exhausted air
exhaust air correct answers Any foul or unwanted air removed from a space by mechanical
means.
What is the normal building space requirement for fresh outside air correct answers 20 cubic feet
per minute per person in the space
, ASHRAE correct answers American Society of Heating, Refrigerating and Air-Conditioning
Engineers
5 requirements for comfort correct answers proper temperature, humidity, circulation, filtration,
ventilation
Dry Bulb Temperature correct answers the measurement of sensible heat
Relative Humidity (RH) correct answers the amount of water vapor present in air expressed as a
percentage of the amount needed for saturation at the same temperature.
Dew point(dp) correct answers the temperature below which moisture in the air begins to
condense
Enthalpy (h) correct answers The total heat contained in a substance measured from a baseline of
32 degrees farenheit
Where is relative humidity found on a psychometric chart? correct answers the curving lines that
run from the bottom left side of the chart up to the right
forced air system correct answers fuel heats air, which is blown through ducts and vents; cool air
is returned to the furnace to be reheated
Three must common types of furnaces correct answers upflow, horizontal, and downflow
(counterflow)
Upflow Furnace correct answers return air is supplied at the bottom of the unit and the heated air
is delivered to the bonnet above the furnace where it is distributed through ductwork
