Alternate Fuels Flashcards
Which two alternate fuels are commonly uses in Liquid form?
2 heating oil, waste oil
Which alternate fuels are commonly used in gaseous form?
- Biogas (digester gas, landfill gas, biomethane)
- Propane-air mixes
What is the most common secondary fuel source?
2 fuel oil
When used in the same appliance natural gas and fuel oil enter the combustion chamber through the same nozzle or injector.
TRUE / FALSE
FALSE
A benefit of the day tank in a fuel oil system is that by being in the mechanical room the fuel oil is preheated.
TRUE / FALSE
TRUE
What is done to #2 fuel oil to extend its life when stored?
Fuel stabilizers are added
How often should alternate fuel system be operated?
Every 6 months
On average, how much methane is contained in landfill gas?
50% - 60%
On average, how much methane is contained in digester gas?
60% - 70%
How is landfill and digester gas pressurized for use?
A gas blower is used
Which code is used for the installation and upgrading of digester and landfill gases?
B149.6
Why is it so important, when dealing with bio gasses, to avoid contamination with water?
Bio gasses contain hydrogen sulfide which when mixed with moisture create sulphuric acid, which is highly corrosive
What three materials are acceptable for the pipe and fittings in a digester gas installation and where can each be used?
Stainless Steel – general piping
Plastic – underground
Copper – vent lines and bleed lines
Why is a flame arrestor required in the valve train of equipment that burns Biogas?
Flashback can be a problem with this equipment because of the changing composition and available supply volume and pressure
Biogas and natural gas can supply the same burner and can be controlled with an automatic switch over.
TRUE / FALSE
TRUE
