Week 5 - Introductory HVAC

Finding CFM-

V(room)= L*W*H = ____ cuft

V(air)= 3.5ACH* V(room) = ____ cuft per hour

V(air) / 60min/hr = _____ CFM cuft per min

Example-

30L*15W*9H = 4050 cuft V(room)

3.5*4050 = 14,175 cuft per hour V(air)

14,175 / 60 = 236.25 CFM cuft per min

Finding Profit-

Add up Parts total =____ (all parts)

Add up Labor= ____ (hours*wage)

Add up Overhead= ____ (overhead*hours)

Add up Parts, Labor, and Overhead = _____

Subtract total Sell Price of job by above equals Profit = _____

Profit divided by Sell Price =____

Covert to percentage=____

Example-

Parts Total= $2730.28

Labor= $852.50

Overhead= $2250.00

$2730.28+$852.50+$2250.00= $5832.78

Sell Price= $6357.73

$6357.73 - $5832.78 = $524.95

524.95 / 6357.73 = 0.08 = 8% profit

Measuring-

K kg kl km

H hg hl hm

D dag dal dam

B g l m

D dg dl dm

C cg cl cm

M mg ml mm

King Henry Died By Drinking Chocolate Milk

Fahrenheit to Celsius-

· Subtract 32 from F temp

· Take answer multiply by 5

· Take answer divide by 9

· Answer in C

Celsius to Fahrenheit-

· Multiply C by 9

· Take answer divide by 5

· Take answer add 32

· Answer in F