Which of these is the correct expression for terminal temperature difference(TTD) ?
A. TTD = saturation temperature of ‘bled’ steam – exit water temperature
B. TTD = saturation temperature of ‘bled’ steam + exit water temperature
C. TTD = saturation temperature of ‘bled’ steam x exit water temperature
D. TTD = saturation temperature of ‘bled’ steam / exit water temperature
Answer:A
Which of these is the correct expression for terminal temperature difference(TTD) ?
A. TTD = saturation temperature of ‘bled’ steam – exit water temperature B. TTD = saturation temperature of ‘bled’ steam + exit water temperature C. TTD = saturation temperature of ‘bled’ steam x exit water temperature D. TTD = saturation temperature of ‘bled’ steam / exit water temperature
Explanation: The expression for terminal temperature difference for a closed heater is given as,