I hope the solution is better explained From which table do we get the values? B.?

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. Figure E26.7 Coal burns rapidly in a fluidized bed, even at 1500F. Based on bed volume. the heat release is 300,000400,000Btu/(hr)(ft3). Counting the open furnace space Suppose that 200,000Btu/(hr)(ft3) are generated in a 40ft3 steam generator. that the water enters the two sets of coils at 70F, and that in the upper set of coils the water flow rate is 3,000lb/hr leaving as steam at 900F and 380 psia. If the steam leaving the lower coils is at 1200F and 400psia, what is the flow rate of the water into the lower set of coils