Exam (elaborations)
STEAM SYSTEMS CHAPTER 11 - Steam Generation Plants.
- Module
- A level Biology
- Institution
- A Level Biology
STEAM SYSTEMS CHAPTER 11 - Steam Generation Plants.
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STEAM SYSTEMS CHAPTER 11 - SteamGeneration Plants
Biomass waste generally contains excessive moisture and will not sustain a flame without
fossil fuels in a co-firing furnace (T/F)
TRUE
What is Biomass?
Biomass is plant or animal material used for energy production. Can be purposely grown
energy crops, wood or forest residues, food processing waste, etc.
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What is Biomass Waste?
Biomass Waste is solid biological material used as a renewable energy fuel. It is typically
mixed with some amount of fossil fuel in order for it to properly burn.
What is the difference between Biomass and Biomass waste?
Biomass is the raw material used to create Biomass waste.
What is Biofuel?
Biofuel is any liquid fuel derived from Biomass. Biofuels are genuine substitutes for
conventional fossil fuels and can be burned on their own.
At minimum, the steam in a nuclear energy system must be directed through a separator to
ensure to ensure dry steam is provided to the LP turbine. (T/F)
TRUE. The at minimum means if Superheated Steam cannot be provided to the low
pressure turbine it at-least has to be dry.
Individual buildings connected to a District Energy System do not have their own boilers or
chillers as piping mains deliver HTF to and from the buildings. (T/F)
TRUE.
What is a District Energy System
, A District Energy System is a centralized location that produces HTF, normally steam but
can be anything, and then distributes said HTF through piping systems to buildings
connected to the system. Benefits of such a system include Energy efficiency, Ease of
operation and maintenance, and decreased building costs.
Most modern steam generation plants that use coal reheat the steam in a second
superheater, a reheater, after it has passed through a portion of the turbine. (T/F)
TRUE.
In a Boiling Water Reactor (BWR), the steam generated in the reactor is supplied directly to
the main turbine and other steam-using accessories or auxiliaries of the various system.
(T/F)
TRUE.
What are the components of a Nuclear Steam Supply System (NSSS)?
1.) Nuclear Reactor
2.) Reactor Coolant System
3.) Chemical and Volume Control System
4.) Auxiliary Cooling System
5.) Safeguard System
6.) Waste Treatment System
7.) Fuel-Handling System
What are the problems with a Boiling Water Reactor (BWR)?
Since the steam in the system comes directly from the reactor the steam and condensate
are radioactive. Everything component of the system must be extensively shielded and most
areas can only be entered under highly controlled conditions.
How are control rods able to adjust the output of the reactor?
The control rods themselves are made of elements able to absorb large quantities of
radiation. So when they cover the fuel rod less energy is able to transfer to the water and
generate steam.
What is the main difference between a Boiling Water Reactor (BWR) and a Pressurized
Water Reactor (PWR)
In a Boiling Water Reactor (BWR) the system utilizes steam generated directly in the reactor
while in a Pressurized Water Reactor (PWR) the system utilizes a heat exchanger to transfer
the energy of the steam generated in the reactor to an isolated loop. The spread of
radioactivity is lessened.
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