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FUEL SUPERHEATED VAPOR COMBUSTION AIR ↑ C A steam generator of this type uses biomass from coconut shells to produce 4.5 tons/h of superheated steam. The feed water returns to the condenser at a temperature of 45°C (point A). Monitoring of the operating conditions in the steam generator indicates that the products of combustion leave the system (point B) at a temperature of 500°C Thus, the thermal energy available inside the furnace was used to generate steam under working conditions and to support energy losses through the walls (convection and radiation losses through the generator walls). As a consequence of this process (losses and useful energy), the exhaust temperature of the flue gases reaches the indicated value 1. 2. 23 3. 4. Determine: Fuel consumption in kg/s and the thermal efficiency of the generator, using the data in the figure. The temperature and pressure of the superheated steam are 200°C and 0.1 MPa (respectively) Determine the quantities of energy contained in the losses of the walls, ashes and combustion gases. Analyze the effect of preheating combustion air and return condensate (economizer) on fuel consumption, thermal efficiency and CO2 emissions, according to the diagram in the figure, given that the air temperature after preheating is 300°C. As a result of preheating, the flue gas temperature must decrease after these equipments. What is the resulting temperature (point C) of the products of combustion? **COCONUT SHELL: C (%) H (%) N(%) 0(%) S (%) Moisture (%) Ashes (%) 33,85 3,73 0,39 38,91 0 9,87 13,24

FUEL SUPERHEATED VAPOR COMBUSTION AIR ↑ C A steam generator of this type uses biomass from coconut shells to produce 4.5 tons/h of superheated steam. The feed water returns to the condenser at a temperature of 45°C (point A). Monitoring of the operating conditions in the steam generator indicates that the products of combustion leave the system (point B) at a temperature of 500°C Thus, the thermal energy available inside the furnace was used to generate steam under working conditions and to support energy losses through the walls (convection and radiation losses through the generator walls). As a consequence of this process (losses and useful energy), the exhaust temperature of the flue gases reaches the indicated value 1. 2. 23 3. 4. Determine: Fuel consumption in kg/s and the thermal efficiency of the generator, using the data in the figure. The temperature and pressure of the superheated steam are 200°C and 0.1 MPa (respectively) Determine the quantities of energy contained in the losses of the walls, ashes and combustion gases. Analyze the effect of preheating combustion air and return condensate (economizer) on fuel consumption, thermal efficiency and CO2 emissions, according to the diagram in the figure, given that the air temperature after preheating is 300°C. As a result of preheating, the flue gas temperature must decrease after these equipments. What is the resulting temperature (point C) of the products of combustion? **COCONUT SHELL: C (%) H (%) N(%) 0(%) S (%) Moisture (%) Ashes (%) 33,85 3,73 0,39 38,91 0 9,87 13,24

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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FUEL SUPERHEATED VAPOR COMBUSTION AIR ↑ C
Transcribed Image Text:FUEL SUPERHEATED VAPOR COMBUSTION AIR ↑ C
A steam generator of this type uses biomass from coconut shells to produce 4.5 tons/h of superheated steam. The feed water returns to the condenser at a temperature of 45°C (point A). Monitoring of the operating conditions in the steam generator indicates that the products of combustion leave the system (point B) at a temperature of 500°C Thus, the thermal energy available inside the furnace was used to generate steam under working conditions and to support energy losses through the walls (convection and radiation losses through the generator walls). As a consequence of this process (losses and useful energy), the exhaust temperature of the flue gases reaches the indicated value 1. 2. 23 3. 4. Determine: Fuel consumption in kg/s and the thermal efficiency of the generator, using the data in the figure. The temperature and pressure of the superheated steam are 200°C and 0.1 MPa (respectively) Determine the quantities of energy contained in the losses of the walls, ashes and combustion gases. Analyze the effect of preheating combustion air and return condensate (economizer) on fuel consumption, thermal efficiency and CO2 emissions, according to the diagram in the figure, given that the air temperature after preheating is 300°C. As a result of preheating, the flue gas temperature must decrease after these equipments. What is the resulting temperature (point C) of the products of combustion? **COCONUT SHELL: C (%) H (%) N(%) 0(%) S (%) Moisture (%) Ashes (%) 33,85 3,73 0,39 38,91 0 9,87 13,24
Transcribed Image Text:A steam generator of this type uses biomass from coconut shells to produce 4.5 tons/h of superheated steam. The feed water returns to the condenser at a temperature of 45°C (point A). Monitoring of the operating conditions in the steam generator indicates that the products of combustion leave the system (point B) at a temperature of 500°C Thus, the thermal energy available inside the furnace was used to generate steam under working conditions and to support energy losses through the walls (convection and radiation losses through the generator walls). As a consequence of this process (losses and useful energy), the exhaust temperature of the flue gases reaches the indicated value 1. 2. 23 3. 4. Determine: Fuel consumption in kg/s and the thermal efficiency of the generator, using the data in the figure. The temperature and pressure of the superheated steam are 200°C and 0.1 MPa (respectively) Determine the quantities of energy contained in the losses of the walls, ashes and combustion gases. Analyze the effect of preheating combustion air and return condensate (economizer) on fuel consumption, thermal efficiency and CO2 emissions, according to the diagram in the figure, given that the air temperature after preheating is 300°C. As a result of preheating, the flue gas temperature must decrease after these equipments. What is the resulting temperature (point C) of the products of combustion? **COCONUT SHELL: C (%) H (%) N(%) 0(%) S (%) Moisture (%) Ashes (%) 33,85 3,73 0,39 38,91 0 9,87 13,24
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