Formulas Pt. 2

Question 1

What is 240Btuh equal to in EDR (Equivalent Direct Radiation)?

Answer 1

1ft2

Question 2

What is 8.33lb equivalent to in U.S Gallons?

Answer 2

1 US Gallon

Question 3

How many cooling tons is equal to 12 000 BTU?

Answer 3

1 Cooling ton

Question 4

V1 / T1 = V2 / T2 is which gas law?

Answer 4

Charles Law

Question 5

Length x Delta T x Coefficient of expansion is a formula used to calculate what?

Answer 5

formula for determining expansion of a pipe

Question 6

Pressure x Area is the formula used to calculate what?

Answer 6

formula for Total Force

Question 7

GPM = BTU / (lb./gal. x delta T) is the equation used for what?

Answer 7

determining flow to a heating zone

Question 8

Total BTU / (Delta T x Mass x Minutes x Specific Heat Capacity) is the equation used for what?

Answer 8

used to determine heat transfer rate in btu/min

Question 9

Drop or Rise / Run
is used to calculate what?

Answer 9

calculate grade of a piping run

Question 10

(# of persons x gal. per day) x (hardness in grains + iron concentration) x days of regeneration + 20%
is the formulaa used to calcualte what?

Answer 10

calculate grains in water

Question 11

Litres = Area x 15min rainfall data or Area + Half the area of the largest adjacent wall x 15min rainfall data is the equation used to calculate what?

Answer 11

calculate the load for a RWL

Question 12

Height x Density
is the formula to calculate what?

Answer 12

pressure

Question 13

0.433 psi/ft is the conversion factor used for…?

Answer 13

unit of conversion for pressure head

Question 14

C-C offset x 1.414
is the formula used to calculate?

Answer 14

the travel of a 45 degreee offset

Question 15

Btuh / (500 x gpm)
is the formula used to calculate?

Answer 15

Delta T for a hydronic system

Question 16

Btuh / (500 x delta T (water)) is the formula use to calculate?

Answer 16

gpm for a hydronic system

Question 17

gpm x 500 x delta T
is the formula used to calculate?

Answer 17

Btuh for a hydronic system

Question 18

π x r
is used to calculate?

Answer 18

area of a circle

Question 19

π x r2 + π x dia. x H
is used to calculate?

Answer 19

area of a cylinder with an open top

Question 20

2(π x r2) + π x dia. x H
is used to calculate?

Answer 20

area of a cylindrical tank

Question 21

(L x W) + 2(W x H) + 2(L x H) is used to calculate?

Answer 21

the area of a rectangular box with an open top

Question 22

2(L x W) + 2(W x H) + 2(L x H) is used to calculate?

Answer 22

the area of a rectangular box, totally enclosed

Question 23

L x W is used to calculate?

Answer 23

the area of a rectangle

Question 24

π x dia2
is used to calculate?

Answer 24

the area of a circle

Question 25

Base x Height / 2 is used to calculate?

Answer 25

the area of a triangle

Question 26

π x r2 x H or dia2 x 0.7854 x H is used to calculate?

Answer 26

the volume of a cylinder

Question 27

Length x Width x Height is used to calculate?

Answer 27

the volume of a rectangular box?

Question 28

4 x π x r3 / 3 is used to calculate?

Answer 28

the volume of a sphere