Question 43Steam Plants - Assistant Engineer70% to pass
A main condenser utilizing a scoop for the circulation of sea water must be constructed as a _______________.
AI Explanation
The correct answer is C) single-pass heat exchanger.
A main condenser utilizing a scoop for the circulation of sea water must be constructed as a single-pass heat exchanger. In a single-pass heat exchanger, the two fluids (in this case, the steam and the sea water) flow through the exchanger in a single, straight-through pass, with no reversal of flow direction. This configuration is best suited for a main condenser with a sea water scoop, as it allows for a simple and efficient circulation of the cooling sea water through the exchanger.
The other options are incorrect because: A) a two-pass heat exchanger has the fluids pass through the exchanger twice, B) a counter-flow heat exchanger has the fluids flow in opposite directions, and D) a parallel-flow heat exchanger has the fluids flow in the same direction but through separate paths, which is not the typical configuration for a main condenser with a sea water scoop.
Related Questions
#41 Which statement listed represents a vital function of the main condenser? #42 Air accumulated in the after condenser of the air ejector unit is discharged directly to the _______________.#44 If the main condenser were operating at a vacuum of 28.5" Hg, a condensate discharge temperature of 86°F, a sea water inlet temperature of 72°F, and a sea water outlet temperature of 79°F, what would be the condensate depression? Illustration SG-0026 #45 The differential temperature of the main condenser cooling water will be significantly affected by a change in _______________.#46 Excessively hot water returning to an atmospheric drain tank indicates _______________.