Properties Of Gas And Principles Of Combustion

Front 1

3 states of matter

Back 1

Solid

Liquid

Gas

Front 2

Characteristics of liquid state

Back 2

Definite volume and definite weight but no definite shape

Front 3

2 factors that influence the state that matter exists in

Back 3

Temp and pressure :)

Front 4

Define specific gravity as it applies to solids or liquids

Back 4

The comparison of a volume of a substance (liquid or solid) compared to an equal volume of water

Front 5

Specific gravity of water

Back 5

One

Front 6

How many times is mercury heavier than water?

Back 6

13.6

Front 7

Define specific gravity as it applies to solids or liquids?

Back 7

The comparison of the weight of a volume of a substance (has or vapour) compared to an equal volume of air!

Front 8

Density of air at STP?

Back 8

0.076 pounds per cubic foot

Front 9

Density of water in lb/cu ft?

Back 9

62.4

Front 10

Density of water in lb/gas?

Back 10

10

Front 11

Density of water in lb/cu in?

Back 11

0.0361

Front 12

Density of water in oz/cu in?

Back 12

0.578

Front 13

Density of water in lb/USgal?

Back 13

8.33

Front 14

C represents?

Back 14

Carbon

Front 15

H represents?

Back 15

Hydrogen

Front 16

O2 represents?

Back 16

Oxygen

Front 17

H2O represents?

Back 17

Water

Front 18

C3H8 represents?

Back 18

Propane!

Front 19

CH4 represents?

Back 19

Methane

Front 20

CO represents?

Back 20

Carbon monoxide

Front 21

Hg represents?

Back 21

Mercury

Front 22

CO2 represent?

Back 22

Carbon dioxide

Front 23

What gases have the following calorific value?

2500 btu/cu ft-

1000 btu/cu ft-

Back 23

Propane

Methane (natural gas)

Front 24

Specific gravity of natural gas?

Back 24

0.6

Front 25

Specific gravity of propane liquid?

Back 25

0.51 or to get technical (0.508) #fuckinneeerd

Front 26

Define BTU?

Back 26

Amount of heat energy required to raise the temperature of one lb of fresh water 1 degree F

Front 27

Standard atmospheric pressure boiling temperature of each of the following liquids?

A) propane

Back 27

-44F

Front 28

B)butane liquid

Back 28

32 F

Front 29

C) water

Back 29

212 F

Front 30

D) liquified natural gas

Back 30

-258 F

Front 31

Density of following materials in lb/cu ft

A) water

Back 31

62.5

Front 32

B) air

Back 32

0.076

Front 33

How many cubic feet of gas are contained in one gallon of each of the following?

A) propane liquid

B) water

Back 33

A) 43.6

B) 272

Front 34

List 3 main gases present in the atmosphere according to the following percentages that they represent in the atmosphere

A) 20%

B) 79%

C) 1%

Back 34

A) oxygen

B) nitrogen

C) other gases

Front 35

When burning gas, what is the significance of the following temps?

A) 3500 F

B) 950 F

Back 35

A) flame temp of propane

B) ignition temp of propane

Front 36

How many btu required to raise the temp of 10 lb of water by 20F?

Back 36

200 baby

Front 37

On a separate piece of paper, show your work to answer the following

Back 37

Good luck *****

Front 38

How many Btu of heat is required to heat 50 gallons of water from 40F to 150F?

Back 38

55000

Front 39

How many cubic feet of natural gas are required to produce 567000 btu?

Back 39

567

Front 40

How many cubic feet of propane gas are required to produce 350000 btu?

Back 40

140

Front 41

How many gallons of propane liquid are required to produce 500 cubic feet of propane vapour?

Back 41

11.47

Front 42

How many gallons of propane liquid are there in 450250 btu?

Back 42

4.11

Front 43

How many cubic feet of air are required to burn 625000 btu of natural gas?

Back 43

6250

Front 44

How many cubic feet of air are required to burn 320000 btu of propane gas?

Back 44

3072

Front 45

How many hours wiill it take for 8000 cubic feet of natural gas to operate a space heater with a rated input of 40000 btu/hour, of the space heater operated continuously?

Back 45

200

Front 46

How many hours will 75 cubic feet of propane gas operate a hot water tank with a rated input of 25000 btu, if the hot water tank operated continuously?

Back 46

7.5

Front 47

A burner has an input rating of 65000 btu. What will the output rating be if the output rating were 80% of the input rating?

Back 47

52000

Front 48

A burner has an output rating of 65000 btu. What will the input rating be if the output rating were 80% of the input rating?

Back 48

81250

Front 49

A) how many btu of heat would be required to raise the temperature of 40 gal of water in a hot water tank from 50F to 140 F?

Back 49

A) 36000

Front 50

B) how long would it take, in hours, to heat the water if the tank has a burner with an input rating of 35000 btu and the output is 60% of the input rating ( to one decimal place )?

Back 50

1.7 hrs

Front 51

C) how many cubic feet of natural gas would be used to heat the water?

Back 51

C) 60 cu ft

Front 52

D) if propane gas were used to heat the water, how many cubic feet of gas would be consumed?

Back 52

D) 24 cu ft

Front 53

E) how many cubic feet of air would be required if:

i) propane gas was used?

ii) natural gas was used?

Back 53

I) 576cu ft

Ii) 600 cu ft

Front 54

Define the term combustion?

Back 54

The rapid oxidation of a fuel resulting in the production of heat or heat and light!

Front 55

When gas burns properly, the hydrogen combines with the oxygen of the air and produce _________ ____________, the carbon combines with the oxygen to produce ________ ________ and the _______ in the air passes through the flame unchanged.

Back 55

Water vapour, carbon dioxide, nitrogen

Front 56

Define the following terms:

Back 56

Just keep swimming lmao rofl

Front 57

Combustion air

Back 57

The air required to completely burn the fuel

Front 58

Primary air

Back 58

Air required for the initial stages of the combustion process and is mixed with the fuel prior to combustion!

Front 59

Secondary air

Back 59

Air required for the intermediate and final stages of the combustion process and is added to the flame to produce complete combustion

Front 60

Excess air

Back 60

Air supplied for the combustion process in excess of, but not required theoretically

Front 61

Combustion products

Back 61

Constituents resulting by uniting fuel with oxygen. This is usually thought of as being gas, primary and secondary air.

Front 62

Range of flammability

Back 62

The percentage of gas present in a gas/air mixture between the upper and lower limits that will burn

Front 63

Incomplete combustion

Back 63

Combustion that does not convert all the carbon and/ or hydrogen into water vapour and/ or carbon dioxide.

Front 64

Lift off

Back 64

The gas/ air mixture speed exceeds the flame speed resulting in a flame that burns too high above the burner

Front 65

Flashback

Back 65

The gas/air mixture is slower than the flame speed causing the flame to burn inside the burner, possibly at the orifice!

Front 66

What three components are required for combustion?

Back 66

Fuel

Heat(ignition)

Oxygen(air)

Front 67

What product creates the main concern when incomplete combustion occurs?

Back 67

CO carbon monoxide

Front 68

What flame color is most likely to indicate poor combustion?

Back 68

Yellow

Hint 68

Piss

Front 69

What flame color usually indicates dust or dirt passing through the flame?

Back 69

Orange

Hint 69

The worst color of basspro hats

Front 70

What color of flame indicates good combustion?

Back 70

Blue

Hint 70

The color of Travis eyes

Front 71

4 symptoms of carbon monoxide poisoning?

Back 71

Headache, dizziness, shortness of breathe, mental confusion

Front 72

Best of luck boys

Back 72

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