Q. What is the purpose of using open heaters in steam power plants?

View solution

Q. Why are closed heaters sometimes made vertical?

View solution

Q. In the T-S diagram of a Rankine cycle, the abscissa represents?

View solution

Q. After the expansion of throttle steam, why is some steam extracted?

View solution

Q. The heat given up by the expansion of throttle steam is utilised in?

View solution

Q. “Regenerative feedwater heating by turbine extraction” is often termed as?

View solution

Q. A regenerative feedwater heating cycle with an infinite number of feedwater heaters has efficiency equal to?

View solution

Q. In the T-S diagram, the process of heating from condenser to boiler saturation temperature when the number of turbine extraction stages are finite is?

View solution

Q. For the process of heating from condenser to boiler saturation temperature to be reversible, the number of extraction stages involved in the entire cycle should be?

View solution

Q. Which of the processes immediately follows the expansion of throttle steam?

View solution

Q. The output from boiler goes to?

View solution

Q. The area of parallelogram in the T-S diagram representing the cycle output is equal to?

View solution

Q. What is the value of “beta” if h represents the local enthalpy on the given expansion line at a given pressure & hf is the enthalpy of saturated water at that pressure?

View solution

Q. The expression for temperature rise t in feedwater heater when a & b are the temperatures of boiler saturation & condenser respectively, is given by which of the following expression?

View solution

Q. What happens to the feedwater that enters the economiser?

View solution

Q. The economiser can also be assumed as?

View solution

Q. The feedwater in the Economiser _________

View solution

Q. The temperature rise from condenser to boiler saturation is divided __________ among the feedwater heaters for maximum gain in efficiency.

View solution

Q. What is the expression for enthalpy of each heater hper heater if a represents the enthalpy of heated feedwater from the economiser and b represents the enthalpy at condenser & n represents the number of heaters?

View solution

Q. If n denotes the number of heater, tᴏᴀ denotes the overall temperature difference & Tfw denotes the total temperature rise of feedwater. The expression for Tfw is?

View solution