Engine: Motor Plants and Auxiliary Boilers

1. A As shown, it is not possible to determine what the relationship is between the actual engine freshwater outlet temperature and the temperature set point of the valve, and as such it is not possible to determine the flow pattern.
2. B As shown, the actual engine freshwater outlet temperature must be below the temperature set point of the valve, thus diverting 100% of the water flow in bypass of the freshwater cooler.
3. C As shown, the actual engine freshwater outlet temperature must be above the temperature set point of the valve, thus sending 100% of the water flow through the freshwater cooler.
4. D As shown, the actual engine freshwater outlet temperature must be at the temperature set point of the valve, thus sending a portion of the water flow through the fresh water cooler and the remainder in bypass of the cooler.

Tip: press A-D to answer