Steam Boilers, Engines, Nozzles and Turbines The performance of a boiler is measured by the Steam produced in kg/kg of fuel burnt All of the listed here Amount of water evaporated per hour Steam produced in kg/h Steam produced in kg/kg of fuel burnt All of the listed here Amount of water evaporated per hour Steam produced in kg/h ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines A fusible plug is fitted in small boilers in order to Avoid excessive build up of pressure Avoid explosion Control steam dome Extinguish fire if water level in the boiler falls below alarming limit Avoid excessive build up of pressure Avoid explosion Control steam dome Extinguish fire if water level in the boiler falls below alarming limit ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines In designing air preheaters, the important design consideration is that Approach temperature should be as low as possible Handling and maintenance should be easier Heat transfer area should be optimum Stack gases should not be cooled to the dew point Approach temperature should be as low as possible Handling and maintenance should be easier Heat transfer area should be optimum Stack gases should not be cooled to the dew point ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The friction present between the steam and the nozzle surfaces reduces the heat drop by 25 to 40% 10 to 15% 40 to 60% 15 to 25% 25 to 40% 10 to 15% 40 to 60% 15 to 25% ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The flow of steam is supersonic At the throat of the nozzle In the divergent portion of the nozzle At the entrance to the nozzle In the convergent portion of the nozzle At the throat of the nozzle In the divergent portion of the nozzle At the entrance to the nozzle In the convergent portion of the nozzle ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Boiler H.P. is defined as the The evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam Steam evaporation rate per kg of fuel fired Work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam Work done by 1 kg of steam at saturation condition The evaporation of 15.65 kg of water per hour from and at 100°C into dry saturated steam Steam evaporation rate per kg of fuel fired Work done in evaporating 1 kg of steam per hour from and at 100°C into dry saturated steam Work done by 1 kg of steam at saturation condition ANSWER DOWNLOAD EXAMIANS APP
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