What is the purpose of the de-aerating feed tank?

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The purpose of the de-aerating feed tank is to remove air from the water and preheat it. In a marine propulsion system, especially in nuclear reactors, the presence of dissolved gases, like oxygen and nitrogen, in the feedwater can lead to corrosion and other problems within the boiler system. The de-aerating feed tank is designed to address this issue by allowing steam to be injected into the water, which helps to strip out the dissolved gases.

By preheating the water as part of the process, the system also improves the efficiency of the steam generation process, as less energy is required to turn the water into steam when it is already at a higher temperature. This preheating step helps to optimize overall system performance, ensuring that the reactor operates efficiently and safely.

This function is critical for maintaining the integrity and longevity of the components involved in the water-steam cycle of nuclear propulsion systems, making the de-aerating feed tank an essential part of the system's design.

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