What type of heat exchanger is used for heat exchange between LNG and demineralized water?
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-For LNG at 162°C with a flow rate of around 2–2.5 m3/h, and desalinated water flowing at a rate of approximately 130–200 m3/h, with the inlet water temperature being ≤10°C, can a shell-and-tube heat exchanger be used directly? With such a large temperature difference, isn’t the stress generated very high? Will this affect the service life of the equipment? Could three-phase heat exchange be considered?
@Cleaner: I think I posted it in the wrong place; it should be in the heat exchanger section
The operating conditions are incomplete. What is the LNG export temperature, and what is the state of the medium? Chilled water outlet temperature?
Indeed, the temperature difference is large, and the water might freeze, potentially causing damage to the heat exchanger; I’m not sure whether inert heat pipes would work well in such situations.
The operating conditions vary, making it impossible to select an appropriate option
LNG may be in a semi-gas state; the temperature is unknown. The temperature difference between the inlet and outlet water of the desalinated water is approximately 2-3℃