Ethylene glycol water heat exchange system of methanol fuel ship

The ethylene glycol water heat exchange system is characterized in that a temperature switch is arranged on a methanol daily cabin, an outlet of the methanol daily cabin is connected with a fluid inlet of a methanol heat exchanger, and a fluid outlet of the methanol heat exchanger is connected with methanol equipment through a methanol service pump; a medium inlet of the methanol heat exchanger is connected with a fluid outlet of the ethylene glycol heat exchanger; a medium outlet of the methanol heat exchanger and an outlet of the ethylene glycol aqueous solution expansion water cabinet are connected with a fluid inlet of the ethylene glycol heat exchanger through an ethylene glycol circulating water pump; when the temperature in the methanol daily cabin is higher than a set value, fresh water in the central cooling fresh water system is selected as a heat exchange medium of the ethylene glycol heat exchanger; otherwise, main engine cylinder sleeve water in the main engine cylinder sleeve water circulation s