The greatest single overall loss of...

The greatest single overall loss of...

Question 1 of 270705eccefa0bacbc34ba4d46e80

The greatest single overall loss of efficiency in a marine propulsion steam plant cycle results from __________.

Question 1 of 27070

Q

The greatest single overall loss of efficiency in a marine propulsion steam plant cycle results from __________.

🔍 Key Concepts

• Rankine steam cycle efficiency and where the largest energy rejection occurs • Role of the main condenser in a steam plant and what happens to exhaust steam there • Relative size of energy losses in support systems (fuel heating, atomization, feedwater heating) compared to the main cycle

💭 Think About

• Think about where, in the entire steam cycle, the biggest temperature drop and phase change of steam occurs and what that means for energy loss to the seawater • Compare how much heat is handled in the boiler–turbine–condenser path versus how much is used just to preheat fuel oil or improve atomization • Ask yourself: which component must continuously reject almost all of the unused heat from the turbine exhaust to complete the cycle?

✅ Before You Answer

• Verify which part of the cycle handles exhaust steam after it leaves the turbine and what is done with that heat • Consider which choice represents a necessary thermodynamic loss inherent in the Rankine cycle, not just an inefficiency of operation or design • Check which process moves the largest amount of energy (in BTU/hr or kW), not just which sounds like it wastes heat