How to prevent freeze damage in heat exchangers during winter
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How to prevent freezing of plate heat exchangers in winter?
For a properly operating plate heat exchanger, there is no need to consider anti-freezing measures; it is sufficient to ensure that proper insulation is in place in order to maintain efficient heat exchange； For the decommissioned plate exchangers, it is required to empty the contents and fill them with nitrogen up to a slight positive pressure.
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Drain the heat exchange medium, disconnect from the system, and fill it with nitrogen for protection. I don’t think there will be any problems when using it normally