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Flashcards in Final Quiz - Need to Know Deck (16)
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1

Two Type A1 refrigerants we use

R143a and R410a

2

What is the waterside heat equation?

Q=500 x GPM x Delta T

3

What is the airside heat equation?

Q = 1.08 x CFM x Delta T

4

How do you find the shading coefficient?

SC = SG / 0.87

5

How do you find the U value

U = 1 / R

6

What is a U value?

A building materials ability to conduct heat

7

What is an R value?

A building materials ability to resist heat

8

Convert 1 ton to BTU/hr

12,000

9

Convert 1 MBH to BTU/hr

1,000

10

Convert 1 W to BTU/hr

3.412

11

Convert 1 psi to ft.wg.

2.31

12

Convert 1 hp to Btu/hr

2,545

13

What is the equation for ACH/hr

CFM X 60 / room volume

14

What are the affinity laws

flow can be translated to rpm.

15

Typical office building

30K - 40K cfm

16

Indoor temp set points for heating and cooling should be

65 and 70