Definitions
Amount of energy needed to cool or heat one pound of water by 1 degree Fahrenheit.
What is BTU
Calorific value of C3H8
What is 2520 btu/ft3
NG Furnace input of 150 000 btu. How much combustion air is needed?
What is 1500 ft3
150 000/1000x10
If 2500cfh of combustion air is consumed, the burner would have to consumer ______cfh of Natural Gas?
2500 x 1000 = 2 500 000
2 500 000/10 = 250 000 BTU
250 000 BTU / 1000 = 250 ft3 or CFH
What is the typical manifold pressure for a natural gas appliance?
What is 3.5" wc
Odorant added to natural gas and propane for safety. The full name.
What is Ethyl Mercaptan
Ignition temperature of CH4
What is 1300 Degrees Fahrenheit
Propane boiler with input of 200 000 Btu. How much complete combustion air is needed?
What is 3000 ft3
200 000/1000x15
How many BTU's is my propane appliance if I meter clock at 450 CFH?
450 x 2520 = 1 134 000 BTU/h
What is the gas pressure called in a piping system when it is flowing?
What is working pressure
Natural gas with all the heavier hydrocarbons removed. Stored in underground storage tanks for use as a fuel gas.
What is Dry Gas
Boiling point of C3H8
What is -44 Fahrenheit (42 oC)
Natural gas boiler with 400 000 BTU input. How much total air is needed?
What is 12 000 ft3
400 000/1000x30
Measuring the gas pressure after the gas valve is called?
What is Manifold Pressure
What keeps a constant pressure in a gas piping system?
What is a Pressure Regulator
The comparison between the weight of a volume of a vapour or liquid and the weight of an equal volume of air or water.
What is specific gravity.
Expansion ratio of CH4
What is 1 : 600
CH4 furnace uses 120 CFH. How much complete combustion air is needed?
What is 1800 ft3
120x1000 =
120 000/1000x15
How many PSI is 7" wc?
What is .25 psi
What is the instrument we use to measure gas pressure called?
What is a monometer.
A chemical process in which the rapid oxidation of fuel results in the production of energy (heat)
What is combustion
Calorific value-BTU/lb of C3H8
What is 21 622
Propane boiler uses 150 CFH of gas. How much total air is needed?
What is 11 340 ft3
150 x 2520 =
378000/1000x30
Normal manifold pressure on a propane appliance is?
What is 10-11" wc
What is clockwise