Product Detail

Fuel change-over system/Diesel Switch

Thermal shock during change-over

The change-over from HFO-MGO-HFO can be somewhat dangerous for the fuel equipment as hot heavy fuel (80~90℃) is mixed into relatively cold gas/diesel oil. The mixture is not expected to be homogeneous immediately and some temperature/viscosity fluctuations are to be expected.  The process therefore needs careful monitoring of temperature and viscosity.  

During the change-over, the temperature increase/decrease rate should be less than 2℃/min. To protect the fuel equipment from thermal shock (expansion problems) resulting in sticking, a fully automatic change-over function including the fuel cooler control will be beneficial to avoid incidents related to human mistakes.

Advantage of DMA fuel change-over and cooling system

DMA fuel change-over unit DMA

Features

Safe change over between HFO and MGO/MDO.

Programmable and controlled temperature changing rate.

Available both for automatic and manual mode.

 Simple to operate for crews on vessel.

 Easy to install on retrofit and new building ships.

Standard Supply

   The scope of supply for fuel change-over unit is comprised of the followings:

Change-over valve

Temperature sensor

Control box and software (integrated) 

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