AFBC has two sub classes which are?
A. Pressurized bed, circulating bed
B. Bubbling bed, fluidized bed
C. Fluidized bed, pressurized bed
D. Bubbling bed, circulating bed
E. None of the above
Answer: D
Learn More :
Power Engineering Chapter 58
- Which one is NOT a disadvantage of the FBC system?
- Less maintenance is required on the FBC because?
- What is an advantage of the FBC?
- The steam turbine in the PFBC system, about what percentage of power is produced?
- The gas turbine in the PFBC system, about what percentage of power is produced?
- Velocities in the AFBC system through the bed of the fluidizing air are in a range of?
- The AFBC can produce up to ___ kg/h of steam but it will soon increase to ___ kg/h.
- Which one is NOT a disadvantage of the Flue Gas Desulphurization (FGD) system?
- In a fluidized bed boiler, a gradual loss of the fluidized bed, including fuel (carbon) particles, is due to:
- A design disadvantage of a pressurized fluidized bed furnace is:
- Fluidized bed boilers can successfully burn coal with ash contents as high as
- Large "clinkers" are not produced in fluidized bed furnaces because of:
- In order to get maximum heat transfer in a bubbling bed furnace, it is necessary to:
- To effectively remove fine dust from flue gas, the most common method in power plants uses:
- The efficiency of a combined cycle plant, using a pressurized fluidized bed boiler, is about _____ higher than that of a conventional pulverized coal plant.
- In an atmospheric fluidized bed boiler, the combustion air pressure is typically 25 cm of water at the FD fan, 16 cm of water at the base of the active bed and _____ at the top of the combustion mass:
- Due to the comparative size of FBC power plants, a significant saving is gained in:
- In fluidized bed combustion, the fuel content (by mass) in the turbulent material is usually:
- The inert bed material of a fluidized bed boiler must be heated to about __________ °C.
- Limestone, when added to a fluidized bed boiler
- The typical time required to heat a fluidized bed to ignition temperature prior to the introduction of coal is:
- The feed-through tubes of a fluidized bed boiler are located in the:
- One operating variable that is manipulated relatively easily and which the operators of FBC boilers must always be aware, is:
- In a typical bubbling fluidized bed boiler, to what depth is the combustion bed maintained?