Question

Fluidized beds (see Figure P26.7) are used in the chemical industry as steam generators Such equipment can burn almost any fuel, including low-quality coals such as lignite. Flue Fuel injection pipes 1550° F Plenum Air distribution grid Fluid bed steam generator Figure E26.7 Coal burns rapidly in a fluidized bed, even at 1500°F. Based on bed volume, the heat release is 300,000-400,000 Btu/(hr)(ft³). Counting the open furnace space above the bed the rate is 100,000-200,000 Btu/(hr)(ft³). Suppose that 200,000 Btu/(hr)(ft³) are generated in a 40 ft³ steam generator, that the water enters the two sets of coils at 70°F, and that in the upper set of coils the water flow rate is 3,000 lb/hr leaving as steam at 900°F and 380 psia. If the steam leaving the lower coils is at 1200°F and 400 psia, what is the flow rate of the water into the lower set of coils?

          Fluidized beds (see Figure P26.7) are used in the chemical industry as steam generators
Such equipment can burn almost any fuel, including low-quality coals such as lignite.
Flue
Fuel injection pipes
1550° F
Plenum
Air distribution grid
Fluid bed steam generator
Figure E26.7
Coal burns rapidly in a fluidized bed, even at 1500°F. Based on bed volume,
the heat release is 300,000-400,000 Btu/(hr)(ft³). Counting the open furnace space
above the bed the rate is 100,000-200,000 Btu/(hr)(ft³).
Suppose that 200,000 Btu/(hr)(ft³) are generated in a 40 ft³ steam generator,
that the water enters the two sets of coils at 70°F, and that in the upper set of coils the
water flow rate is 3,000 lb/hr leaving as steam at 900°F and 380 psia. If the steam
leaving the lower coils is at 1200°F and 400 psia, what is the flow rate of the water
into the lower set of coils?

Fluidized beds (see Figure P26.7) are used in the chemical industry as steam generators
Such equipment can burn almost any fuel, including low-quality coals such as lignite.
Flue
Fuel injection pipes
1550° F
Plenum
Air distribution grid
Fluid bed steam generator
Figure E26.7
Coal burns rapidly in a fluidized bed, even at 1500°F. Based on bed volume,
the heat release is 300,000-400,000 Btu/(hr)(ft³). Counting the open furnace space
above the bed the rate is 100,000-200,000 Btu/(hr)(ft³).
Suppose that 200,000 Btu/(hr)(ft³) are generated in a 40 ft³ steam generator,
that the water enters the two sets of coils at 70°F, and that in the upper set of coils the
water flow rate is 3,000 lb/hr leaving as steam at 900°F and 380 psia. If the steam
leaving the lower coils is at 1200°F and 400 psia, what is the flow rate of the water
into the lower set of coils?

Added by Sherri S.

Question

Please give Ace some feedback