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Flashcards in HVAC/R Theory Deck (16)
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0

1 lb = how many grams?
1lb = how many oz?
1 Ton = how many lb?

-454 g
-16 oz
-2000 lb

1

How many BTU's/lb does it take to:
-Heat water 1 degree F?
-Melt ice?
-Boil water?

- 1 BTU
- 144 BTU's
- 970 BTU'S

2

What are the formulas to change Degrees C to Degrees F?

And Degrees F to Degrees C?

- C = (F- 32) / 1.8

- F = (C X 1.8) + 32

3

Psig to Psia?

Psig + 14.7 = Psia

4

Kpag to Kpaa?

Kpag + 101.3 = Kpaa

5

Psig to Kpag?

Psig x 6.89 = Kpag

6

Kpag to Psig?

Kpag \ 6.89 = Psig

7

"Hg to Psia ?

14.7 - ("Hg \ 2.04) = Psia

8

Psia to "Hg ?

(14.7 - Psia) x 2.04 = "Hg

9

"Hg to Kpag ?

"Hg x 3.38 = Kpag

10

F to C ?

(F-32) \ 1.8 = C

11

C to F ?

(C x 1.8) + 32 = F

12

C to K ?

C + 273 = K

13

F to R ?

F + 460 = R

14

R to K ?

R \ 1.8 = K

15

K to R ?

K x 1.8 = R