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80 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Air used for combustion that enters the atmospheric burner to mix with gas before combustion is called? |
Primary air |
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Limits of flammability for natural gas is? |
4-14% |
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Limits of flammability for propane is? |
2-10% |
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Calorific value of natural gas is? |
1000 BTU/cubic feet |
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Heat content for propane is? |
2500 btu/cubic feet |
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Specific gravity for natural gas is? |
0.6 |
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Specific gravity for propane vapour is? |
1.5 |
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Specific gravity for propane liquid is? |
0.5 |
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Ignition temperature for natural gas is? |
1100°F |
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Ignition temperature propane is? |
1000°F |
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The boiling point of natural gas is? |
-260°F |
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The boiling point for propane is? |
-44°F |
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The name of the odorant added to natural gas is called? |
Ethyl Mercaptan |
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The name of the odorant added to propane is called? |
Ethyl Mercaptan |
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The amount of odorant added to natural gas is? |
1 pound per 1,000,000 ft.³ |
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The amount of odorant added to propane is? |
1 L per 10,000 L liquid propane |
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The percentage of odorized natural gas to be detected in an area is? |
1% of room volume |
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The purpose of the odorant added to natural gas is for? |
Leak detection |
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Gas piping pressure for natural gas or propane is always ________ atmospheric pressure? |
Above |
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Low gas piping pressure is? |
0 to14 inches water column |
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High gas piping pressure is? |
Anything about 14 inches water column |
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The instrument used to measure gas pressure is a? |
Manometer |
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Measuring gas pressure before the appliance pressure regulator of a gas valve is called? |
Inlet gas pressure |
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Measuring gas pressure after the appliance pressure regulator of a gas valve is called? |
Manifold gas pressure |
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When a gas appliance is firing the gas pressure in the gas piping system is called? |
Working gas pressure |
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When a gas appliance is firing and then shuts off the gas piping pressure is called? |
Static gas pressure |
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When the largest gas appliance in a multi appliance gas piping system is firing and then shuts off and no other appliances are firing the gas piping pressure is called? |
Lock up gas pressure |
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Low gas pressure is measured at a gas appliance in? |
Inches of water column |
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The maximum high limit setting up a gas furnace is? |
250°F |
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The maximum high limit setting on the gas boiler is? |
250°F |
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The maximum aquastat acting as a high limit setting on a gas boiler is? |
250°F |
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To keep a constant gas pressure in a gas piping system the component used is a? |
Pressure regulator |
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Specific gravity of air is? |
1 |
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Specific gravity of water is? |
1 |
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When the weight of an equal volume of natural gas is compared to an equal volume of air it is called? |
Specific gravity |
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When the weight of an equal volume of propane vapour is compared to an equal volume of air it is called? |
Specific gravity |
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When the weight of an equal volume of propane liquid is compared to an equal volume of water it is called? |
Specific gravity |
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Zero psig is equal to? |
14.7 psia |
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1 psig is equal to? |
15.7 psia |
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CH4 represents _____ or called _____ part of the _____ family of compounds? |
Methane, natural gas, hydrocarbon |
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C3H8 represents _____ or called _____ part of the _____ family of compounds? |
Propane, liquid petroleum gas, hydrocarbon |
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Propane vapour released into the atmosphere will? |
Fall |
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Natural gas released into the atmosphere will? |
Rise |
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Flame speed for natural gas is? |
12 in./s |
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Flame speed for a propane is |
11 in./s |
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All safety controls must shut off power to? |
The gas valve |
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Flowing gas pressure is called? |
Working pressure |
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No flow gas pressure is called? |
Static pressure |
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Increased gas pressure as a result of a large gas appliance suddenly shutting off and gas pressure is trapped between the regulator and the gas appliance is called? |
Lock up pressure |
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Natural gas with other hydrocarbons in it is called? |
Wet gas |
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Natural gas with other hydrocarbons removed is called? |
Dry gas |
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Natural gas with hydrogen sulphide in it is called? |
Sour gas |
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Natural gas with hydrogen sulphide removed is called? |
Sweet gas |
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LPG stands for? |
Liquified petroleum gas |
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LP stands for? |
Liquid propane |
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LP gas stands for? |
Liquid propane vaporized |
Only the gas company calls it this |
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A propane cylinder can be filled to a maximum volume of? |
80% |
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A propane cylinder can be filled to a maximum water weight of? |
42% |
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1 ft.³ is equal to how many imperial gallons? |
6.23 |
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How many pounds of liquid propane in a cubic foot? |
31.15lbs |
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The physical properties of natural gas are? |
Colourless, tasteless, odourless and invisible |
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The physical properties of propane gas are?Toxicity of propane |
Colorless, odorless, invisible and tasteless |
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Nontoxic |
Nontoxic |
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Toxicity of natural gas is? |
Nontoxic |
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How many pounds of liquid propane in a imperial gallon? |
5lbs |
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The max flame temperature of methane gas is? |
3500°F |
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The max flame temperature of propane is? |
3600°F |
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What is a BTU? |
Amount of energy needed to heat or cool 1 pound of water by 1°F |
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What is calorific value? |
Energy released when a given volume of fuel is burned |
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The expansion rate of propane vapour from liquid is? |
270 : 1 |
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The physical properties of propane gas are? |
Colorless, odorless, invisible and tasteless |
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The expansion rate of natural gas vapour from liquid is? |
600:1 |
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The BTU/lb for vaporized natural gas is? |
23875 BTU |
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The BTU/lb for vaporized propane gas is? |
22000 BTU |
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The BTU per imperial gallon for vaporize propane gas is? |
110,000 BTU |
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Why is butane not used instead of propane in Canada? |
Boiling point of butane is 32°F/0°C |
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Combustion is a chemical process in which what happens? |
The rapid oxidization of fuel results in the production of energy |
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What in any quantity are toxic and life-threatening? |
Carbon monoxide and aldehydes |
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What are the four main categories of air supply? |
Combustion air, excess air, dilution air, ventilation air |
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What’s the ratio for the air-gas mixture required to achieve perfect combustion? |
10:1 |
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