ercise 5.15.1.1 A boiler with super heater generates 6000kg/hr of steam at apressure of 1.5MPA, 0.98 dry at exit from the boiler and at atemperature of 300°C'on leaving the super heater. If the feed watertemperature is 80°C and the overall efficiency of the combined boilerand super heater is 85%, determine:5.1.1.1the amount of coal of calorific value 30MJ/kg usedper hour (636kg/hr)3Bthe equivalent evaporation from and at 100°C forthe combined unit (11.3kg/kgf);the heating surface required in the super heater ifthe rate of heat transmission may be taken as450 000kJ/m2 of heating surface per hour(3.85m2).225.1.1.25.1.1.3

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5.1.1 A boiler with super heater generates 6000kg/hr of steam at a pressure of 1.5MPA, 0.98 dry at exit from the boiler and at a temperature of 300°C'on leaving the super heater. If the feed water temperature is 80°C and the overall efficiency of the combined boiler and super heater is 85%, determine: the arnount of coal of calorific value 30MJ/kg used per hour (636kg/hr); the equivalent evaporation from and at 100°C for the combined unit (11.3kg/kgf); the heating surface required in the super heater if the rate of heat transmission may be taken as 450 000KJ/m2 of heating surface per hour (3.85m2). 5.1.1.1 22 5.1.1.2 5.1.1.3

5.1.1 A boiler with super heater generates 6000kg/hr of steam at a pressure of 1.5MPA, 0.98 dry at exit from the boiler and at a temperature of 300°C'on leaving the super heater. If the feed water temperature is 80°C and the overall efficiency of the combined boiler and super heater is 85%, determine: the arnount of coal of calorific value 30MJ/kg used per hour (636kg/hr); the equivalent evaporation from and at 100°C for the combined unit (11.3kg/kgf); the heating surface required in the super heater if the rate of heat transmission may be taken as 450 000KJ/m2 of heating surface per hour (3.85m2). 5.1.1.1 22 5.1.1.2 5.1.1.3

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

100%

ercise 5.1
5.1.1 A boiler with super heater generates 6000kg/hr of steam at a
pressure of 1.5MPA, 0.98 dry at exit from the boiler and at a
temperature of 300°C'on leaving the super heater. If the feed water
temperature is 80°C and the overall efficiency of the combined boiler
and super heater is 85%, determine:
5.1.1.1
the amount of coal of calorific value 30MJ/kg used
per hour (636kg/hr)3B
the equivalent evaporation from and at 100°C for
the combined unit (11.3kg/kgf);
the heating surface required in the super heater if
the rate of heat transmission may be taken as
450 000kJ/m2 of heating surface per hour
(3.85m2).
22
5.1.1.2
5.1.1.3

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