Up to 6-7x thicker insulation of the LH2 tank is required to achieve a BOR similar to the LNG tank.Ī fully loaded 170,000m3 LNG carrier transports about 72,000 tonnes of LNG and consumes ~100 tons of bunker fuel per day which is ~1.2 GWh/day. LNG carrier has a boil-off rate (BOR) of ~0.1%/day, but it is expected that LH2 carrier will have BOR of ~1%/day when the same thickness of tank insulation is used. 🤔īoil-off LNG is used to be burnt in a gas combustion unit, but there is said that the better alternative is to re-liquefy the excessive BOG and make use of it. 🤔 This natural evaporation of gas is known as boil-off gas (BOG), and is unavoidable. 👈ĭespite the fact that LNG or LH2 are stored in an insulated tank, the parasitic transfer of heat from the surroundings heats these liquid gases and after reaching the boiling point they change to gaseous form (LNG -162 ☌ and LH2 -253 ☌) it is necessary to remove them to reduce the pressure inside the tank and ensure that it does not expand and explode. a fully loaded 170,000m3 LNG carrier transports about 72,000 tonnes of LNG which is ~1 TWh of energy. 👉 But LNG is a completely different animal compared to LH2. Hence these plans to build 'hydrogen ready' gas power plants here in the EU.

Well, our politicians think that LH2 is very similar to LNG and after some time even LH2 could replace fossil LNG. It looks like it is planned to import a lot of liquid hydrogen using LH2 carriers. The EU has the ambition to import 10 million tonnes of renewable hydrogen in the EU by 2030.

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