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#BoilerManual #AirAndGasFlow #Section3 #Page39

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Alt = Labeled Fig. 33 at the bottom; labeled at top REHEATER DESIGN CURVES. This graph is laid out similarly to Figure 32 with the x axis laid out 1.4 to 4.2 in increments of .2 but is marked as Main steam flow, 10 to the 6th power lb/hr and likely applies to the x axis in Figure 32. The y axis is in 2 segments with the lower portion marked 400 to 1000 in increments of 100 labeled Steam temperatures F. The upper portion is 0 to 10 incrementing by twos, and is labeled Pressure, 100 psig water flow 10,000 lb/hr. in the upper left corner of the graph is printed "900 psig design water pressure at spray nozzle". Two lines occupy the upper section of the graph, marked (top-down order) Steam pressure at R.H. inlet which ends at the 4.2 mark on the x axis and a dot, marked Orifice design flow 54,000 lb/hr; below that line is a straight line drawn just above the 0 mark labeled "Expected R.H. spray water flow".

The lower section has two lines marked, in top-down order, Reheat outlet and Reheat inlet. The upper line gradually curves from the 1.4 mark at about 950 F until it reaches the 1000 mark at about 2.8 then flattens out for the rest of the graph; The lower line starts at just short of the 500 F mark at 1.4 and gradually rises to just about 600 at the 4.2 mark.

#BoilerManual #AirAndGasFlow #Section3 #Page39

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Alt = Labeled Fig. 33 at the bottom; labeled at top REHEATER DESIGN CURVES. This graph is laid out similarly to Figure 32 with the x axis laid out 1.4 to 4.2 in increments of .2 but is marked as Main steam flow, 10 to the 6th power lb/hr and likely applies to the x axis in Figure 32. The y axis is in 2 segments with the lower portion marked 400 to 1000 in increments of 100 labeled Steam temperatures F. The upper portion is 0 to 10 incrementing by twos, and is labeled Pressure, 100 psig water flow 10,000 lb/hr. in the upper left corner of the graph is printed "900 psig design water pressure at spray nozzle". Two lines occupy the upper section of the graph, marked (top-down order) Steam pressure at R.H. inlet which ends at the 4.2 mark on the x axis and a dot, marked Orifice design flow 54,000 lb/hr; below that line is a straight line drawn just above the 0 mark labeled "Expected R.H. spray water flow".

The lower section has two lines marked, in top-down order, Reheat outlet and Reheat inlet. The upper line gradually curves from the 1.4 mark at about 950 F until it reaches the 1000 mark at about 2.8 then flattens out for the rest of the graph; The lower line starts at just short of the 500 F mark at 1.4 and gradually rises to just about 600 at the 4.2 mark.

#BoilerManual #AirAndGasFlow #Section3 #Page39

------------------------------------------------- 39 ------------------------------------------------------
Alt = Labeled Fig. 33 at the bottom; labeled at top REHEATER DESIGN CURVES. This graph is laid out similarly to Figure 32 with the x axis laid out 1.4 to 4.2 in increments of .2 but is marked as Main steam flow, 10 to the 6th power lb/hr and likely applies to the x axis in Figure 32. The y axis is in 2 segments with the lower portion marked 400 to 1000 in increments of 100 labeled Steam temperatures F. The upper portion is 0 to 10 incrementing by twos, and is labeled Pressure, 100 psig water flow 10,000 lb/hr. in the upper left corner of the graph is printed "900 psig design water pressure at spray nozzle". Two lines occupy the upper section of the graph, marked (top-down order) Steam pressure at R.H. inlet which ends at the 4.2 mark on the x axis and a dot, marked Orifice design flow 54,000 lb/hr; below that line is a straight line drawn just above the 0 mark labeled "Expected R.H. spray water flow".

The lower section has two lines marked, in top-down order, Reheat outlet and Reheat inlet. The upper line gradually curves from the 1.4 mark at about 950 F until it reaches the 1000 mark at about 2.8 then flattens out for the rest of the graph; The lower line starts at just short of the 500 F mark at 1.4 and gradually rises to just about 600 at the 4.2 mark.

#BoilerManual #AirAndGasFlow #Section3 #Page39

------------------------------------------------- 39 ------------------------------------------------------
Alt = Labeled Fig. 33 at the bottom; labeled at top REHEATER DESIGN CURVES. This graph is laid out similarly to Figure 32 with the x axis laid out 1.4 to 4.2 in increments of .2 but is marked as Main steam flow, 10 to the 6th power lb/hr and likely applies to the x axis in Figure 32. The y axis is in 2 segments with the lower portion marked 400 to 1000 in increments of 100 labeled Steam temperatures F. The upper portion is 0 to 10 incrementing by twos, and is labeled Pressure, 100 psig water flow 10,000 lb/hr. in the upper left corner of the graph is printed "900 psig design water pressure at spray nozzle". Two lines occupy the upper section of the graph, marked (top-down order) Steam pressure at R.H. inlet which ends at the 4.2 mark on the x axis and a dot, marked Orifice design flow 54,000 lb/hr; below that line is a straight line drawn just above the 0 mark labeled "Expected R.H. spray water flow".

The lower section has two lines marked, in top-down order, Reheat outlet and Reheat inlet. The upper line gradually curves from the 1.4 mark at about 950 F until it reaches the 1000 mark at about 2.8 then flattens out for the rest of the graph; The lower line starts at just short of the 500 F mark at 1.4 and gradually rises to just about 600 at the 4.2 mark.

#BoilerManual #AirAndGasFlow #Section3 #Page39

------------------------------------------------- 39 ------------------------------------------------------
Alt = Labeled Fig. 33 at the bottom; labeled at top REHEATER DESIGN CURVES. This graph is laid out similarly to Figure 32 with the x axis laid out 1.4 to 4.2 in increments of .2 but is marked as Main steam flow, 10 to the 6th power lb/hr and likely applies to the x axis in Figure 32. The y axis is in 2 segments with the lower portion marked 400 to 1000 in increments of 100 labeled Steam temperatures F. The upper portion is 0 to 10 incrementing by twos, and is labeled Pressure, 100 psig water flow 10,000 lb/hr. in the upper left corner of the graph is printed "900 psig design water pressure at spray nozzle". Two lines occupy the upper section of the graph, marked (top-down order) Steam pressure at R.H. inlet which ends at the 4.2 mark on the x axis and a dot, marked Orifice design flow 54,000 lb/hr; below that line is a straight line drawn just above the 0 mark labeled "Expected R.H. spray water flow".

The lower section has two lines marked, in top-down order, Reheat outlet and Reheat inlet. The upper line gradually curves from the 1.4 mark at about 950 F until it reaches the 1000 mark at about 2.8 then flattens out for the rest of the graph; The lower line starts at just short of the 500 F mark at 1.4 and gradually rises to just about 600 at the 4.2 mark.

#BoilerManual #FluidCirculation #Section2 #Page39

8. Why is steam flow from the primary superheater outlet crisscrossed on its way to the secondary superheater inlet?

9. What is the function of spray attemperators?

10. How do you control final reheat steam temperature?

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#BoilerManual #FluidCirculation #Section2 #Page39

8. Why is steam flow from the primary superheater outlet crisscrossed on its way to the secondary superheater inlet?

9. What is the function of spray attemperators?

10. How do you control final reheat steam temperature?

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#BoilerManual #FluidCirculation #Section2 #Page39

8. Why is steam flow from the primary superheater outlet crisscrossed on its way to the secondary superheater inlet?

9. What is the function of spray attemperators?

10. How do you control final reheat steam temperature?

------------------------------------------------- 39 ------------------------------------------------------

#BoilerManual #FluidCirculation #Section2 #Page39

8. Why is steam flow from the primary superheater outlet crisscrossed on its way to the secondary superheater inlet?

9. What is the function of spray attemperators?

10. How do you control final reheat steam temperature?

------------------------------------------------- 39 ------------------------------------------------------

#BoilerManual #FluidCirculation #Section2 #Page39

8. Why is steam flow from the primary superheater outlet crisscrossed on its way to the secondary superheater inlet?

9. What is the function of spray attemperators?

10. How do you control final reheat steam temperature?

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