Install UNIT 6 Week 1 HW

What are four physical properties of objects that can be measured?

• up, down, left and right

• Distance, area, volume, and weight

What units are used to measure area?

• inches, feet, meters, miles

• Squared units such as square inches or square feet

Name a common use of area in HVACR.

• to cut the carpet

• Filter area, grille free area, and duct work cross sectional are all measured in square inches.

Calculate the area of a grille that is 6 inches high and 30 inches long.

• from here to there

• 6 inches ´ 30 inches = 180 square inches

What units are used to measure volume?

• square

• Cubed units such as cubic inches and cubic feet

Calculate the volume of a room that is 12 feet wide and 15 feet long with a 10- foot ceiling.

• 12 feet ´ 15 feet = 180 square feet

           180 square feet ´ 10 feet = 1800 cubic feet

• 180

What is a compound measurement?

• A compound measurement measures two or more properties and compares them to each other.

• the other answer, not this one.

List some examples of compound measurements.

• Density, specific volume, specific gravity, and pressure. Any rate is a compound measurement.

• The other answer

What is the difference between a quantity measurement and a rate measurement?

• A rate measurement is a compound measurement that compares a quantity with time.

• Overthere

List common rate measurements used in HVACR.

• Airflow in cubic feet per minute CFM. Water flow in gallons per minute GPM. Heat flow in BTUs per hour.

• How long does it take to heat up or cool a house 1 degree