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Sheet Metal 2nd Yr > Gas Chart Properties > Flashcards

Gas Chart Properties Flashcards

1
Q

Chemical formula for water?

A

H20

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2
Q

Chemical formula for natural gas (methane)?

A

CH4

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3
Q

Chemical formula for propane?

A

C3H8

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4
Q

What are the physical properties of methane and propane?

A

odorless, colorless, tasteless

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5
Q

Density Lb/Imp gal. (liquid) is water?

A

10 lb/imp gal.

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6
Q

Density Lb/Imp gal. (liquid) is methane (natural gas)?

A

4.24 lb/imp gal.

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7
Q

Density Lb/Imp gal. (liquid) is propane?

A

5.1 lb/imp gal.

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8
Q

Density LG (liquid gas) / m3 is water?

A

1.29kg/m3 air

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9
Q

Density LG (liquid gas) / m3 is methane (natural gas)?

A

0.774 kg/m3 air

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10
Q

Density LG (liquid gas) / m3 is propane?

A

1.935 kg/m3 air

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11
Q

Specific gravity of water?

A

1

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12
Q

Specific gravity of methane (natural gas)?

A

0.424

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13
Q

Specific gravity of propane?

A

0.51

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14
Q

Specific gravity vapor of water?

A

1

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15
Q

Specific gravity vapor of methane (natural gas)?

A

0.6

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16
Q

Specific gravity vapor of propane?

A

1.5

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17
Q

Vapor expansion-cuft vapor / cuft liquid of methane (natural gas)?

A

600 (600:1)

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18
Q

Vapor expansion-cuft vapor / cuft liquid of propane?

A

270 (270:1)

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19
Q

Vapor expansion lbs liquid/cuft of propane?

A

8.5 (8.5:1)

20
Q

Boiling point of water?

A

212F / 100C

21
Q

Boiling point of methane (natural gas)?

A

-260F / -162C

22
Q

Boiling point of Propane?

A

-44F / -42C

23
Q

Calorific value of methane (natural gas)?

A

1000 Btu/cuft

24
Q

Calorific value of propane?

A

2500 Btu/cuft

25
Q

Calorific value Btu/imp gal liquid of methane (natural gas)?

A

96,000 Btu/imp gal

26
Q

Calorific value Btu/imp gal liquid of propane?

A

109,560 Btu/imp gal

27
Q

Calorific value KJ/L of methane (natural gas)?

A

22,350 KJ/L

28
Q

Calorific value KJ/L of propane?

A

25,510 KJ/L

29
Q

Calorific value KJ/m3 of methane (natural gas)?

A

37,240 KJ/m3

30
Q

Calorific value KJ/m3 of propane?

A

93,650 KJ/m3

31
Q

Sensible Heat of water is ?

A

1Btu / lb F 4.2 KJ / KgC

32
Q

Sensible Heat of ice?

A

0.5 Btu / lb *F 2 KJ / Kg *C

33
Q

Latent Heat of steam

A

0.5 Btu / lb *F 2 KJ / Kg *C

34
Q

Latent Heat of fusion of water?

A

144 Btu / lb*F 335 KJ / Kg *C

35
Q

Latent Heat of vaporization of water?

A

970 BtU / lb*F 2257 KJ / Kg *C

36
Q

Flammability range (LEL:UEL) of methane (natural gas)?

A

5-15 %

37
Q

Flammability range (LEL:UEL) of propane?

A

2.3 - 9.5 %

38
Q

Ignition temperature of methane (natural gas)?

A

1300F 700C

39
Q

Ignition temperature of propane?

A

920F 495C

40
Q

Flame temperature of methane (natural gas)?

A

3350F 1843C

41
Q

Flame temperature of propane?

A

3500F 1927C

42
Q

Theoretical air required (air : fuel) of methane (natural gas)?

A

10:1

43
Q

Theoretical air required (air : fuel) of propane?

A

25:1

44
Q

Complete combustion of methane (natural gas) CH4 ?

A

CO2 + 2 H2O + 8 N2 + heat or light

45
Q

Complete combustion of propane C3H8 ?

A

3 CO2 + 4 H2O + 2 ON2 + heat or light

46
Q

The flame speed of methane (natural gas)?

A

26 inches/second 660 millimeters/second

47
Q

The flame speed of propane?

A

32 inches/second 813 millimeters/second

Sheet Metal 2nd Yr (7 decks)

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