Chapter 5 -Fuel System (Pages 119 Thru
164) Questions And Answers With
Verified Solutions Already Passed!!!
Latest Updated 2024
Purpose of fuel system accessories? - ANSWER✔✔To store, supply and control
the fuel supplied to the boiler.
Combustion process? - ANSWER✔✔Fuel mixed with air is burned to produce the
heat necessary to operate the boiler.
What happens to the heat from gases of combustion? - ANSWER✔✔It is
transferred throughout the boiler for maximum efficiency.
Identify the types of fuels used in boilers? - ANSWER✔✔Fuel oil, Natural gas
(gas) and Coal.
How is the type of fuel used determined? - ANSWER✔✔1) Boiler design.
2) Price & availability
3) Compliance with air pollution regulations
What is true of all fuels? - ANSWER✔✔They are combustible and dangerous if
safety precautions are not followed.
What are the most commonly used fuels in LP boilers? - ANSWER✔✔Fuel oil and
gas.
,What types of boilers is coal primarily used in? - ANSWER✔✔Large process
boilers.
Under what circumstances might electricity be used to produce heat? -
ANSWER✔✔To comply with emission restrictions.
Under what circumstances does fuel require special consideration? -
ANSWER✔✔Storage, handling and combustion procedures.
How are the fuel system accessories required determined? - ANSWER✔✔From
the type of fuel used.
What is the regulating source for the types of controls and safety devices used for
boilers, including fuel systems? - ANSWER✔✔1) ASME's Controls and Safety
Devices for Automatically Fired Boilers. (ASME CSD-1).
2) NFPA Standards.
3) Insurance requirements.
What three elements primarily make up fuel oil? - ANSWER✔✔Carbon,
Hydrogen & Moisture.
What elements are present in fuel oil, but in lesser amounts? - ANSWER✔✔1)
Sulfur
2) Nitrogen
3) Arsenic
4) Phosphorous
5) Silt
, How are specific amounts of these elements detected? - ANSWER✔✔Ultimate
analysis.
Ultimate analysis? - ANSWER✔✔A chemical process used to determine the
quantity of elements that compose a substance.
What does Ultimate Analysis further determine, and how? - ANSWER✔✔It
determines fuel oil characteristics by the percentages by weight of each element.
What are the characteristics of fuel oil? - ANSWER✔✔1) Viscosity.
2) Flash point.
3) Fire point.
4) Pour point.
5) Volatility.
6) Heating value.
Viscosity? - ANSWER✔✔Internal resistance of the fuel oil to flow.
How is viscosity of fuel oil lowered? - ANSWER✔✔By raising its temperature.
Flash point? - ANSWER✔✔The temperature at which fuel oil gives off vapor that
flashes when exposed to an open flame.
What does the flash point indicate? - ANSWER✔✔The maximum temperature at
which a fuel oil can be stored and handled without serious fire hazard.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller classhub. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
