In temperatures below -25 F the Digital Control System uses what to heat the coolant for startup?

In temperatures below -25 F the Digital Control System uses what to heat the coolant for startup?

• A. Electric heater
• B. Fuel-fired coolant heater
• C. Solar heater
• D. Immersion heater

Answer: (B)

Extreme cold startup requires bringing the coolant to the required operating temperature quickly and reliably. A fuel-fired coolant heater provides high heat output to the entire coolant loop and can operate independently of the plant’s electrical system, which is crucial when starting up in temperatures as low as -25 F. This preheats the coolant so pumps, valves, and the digital control system reach proper operating conditions without placing excessive electrical demand on the system, reducing thermal stress and preventing startup problems. Electric heaters can heat coolant but require substantial electrical power, which may be limited during startup. Solar heaters are unreliable in extreme cold and dark conditions. An immersion heater heats only the fluid inside a tank and isn’t as effective for warming the whole coolant loop efficiently.

Extreme cold startup requires bringing the coolant to the required operating temperature quickly and reliably. A fuel-fired coolant heater provides high heat output to the entire coolant loop and can operate independently of the plant’s electrical system, which is crucial when starting up in temperatures as low as -25 F. This preheats the coolant so pumps, valves, and the digital control system reach proper operating conditions without placing excessive electrical demand on the system, reducing thermal stress and preventing startup problems.

Electric heaters can heat coolant but require substantial electrical power, which may be limited during startup. Solar heaters are unreliable in extreme cold and dark conditions. An immersion heater heats only the fluid inside a tank and isn’t as effective for warming the whole coolant loop efficiently.