Optimization of LNG sea transportation route allocation considering BOG management
In order to effectively utilize the large amount of boil off gas(BOG)generated during the operation of liquefied natural gas(LNG)ships,the ship allocation problem for LNG sea transportation routes considering BOG management was studied.A ship allocation model was established for LNG sea transportation routes at economical speeds using BOG gen-erated from LNG as propulsion fuel.On this basis,a BOG management strategy was designed based on the relationship between ship speed and BOG demand,while a joint optimiza-tion model for LNG sea transportation route allocation and ship speed considering BOG management was established.Taking an LNG shipping company in China as an example,the lowest cost,optimal ship allocation plan,and voyage schedule corre-sponding to two models were obtained.Comparing the optimal solutions of the two models,it can be seen that the BOG man-agement strategy can effectively reduce costs by more than 8%,while corresponding management suggestions are pro-posed from the perspective of LNG spot price fluctuations and the business scale of shipping companies.Research results show that the proposed method can provide decision support for LNG shipping companies to reasonably allocate transporta-tion resources and effectively manage LNG ship evaporation gas.
LNG sea transportationroute allocation of shipsboil off gas(BOG)managementspeed optimization
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