The system combines intelligent design with reliable and robust performance, significantly reducing energy consumption in both DF-mode operation and onboard cargo reliquefaction.
HD Korea Shipbuilding & Offshore Engineering (HD KSOE) has taken a major step in the liquefied gas sector with the commercialization of its next-generation LPG Cargo Handling System (CHS). The LPG CHS completed its maiden cargo cycle following the system’s first installation aboard a vessel on August 25.
HD KSOE stated that the ship loaded propane and butane in Houston, Texas, in the United States, in mid-September and discharged them in Ecuador in early October, completing the full cargo cycle. This demonstrates the system’s proven performance under real operating conditions. The operation was carried out smoothly, validating the system’s reliability and safety in commercial service.
A portion of the gas inside the tank, during vessel operation, naturally vapourises. Through CHS technology, the vapourised gas is reliquefied, preventing gas loss. The newly commercialized LPG CHS developed by HD KSOE adopts a Direct Fuel Supply System, which returns only part of the reliquefied gas to the tank while supplying the rest directly as fuel for the engine.
This configuration maximises reliquefcation efficiency and minimizes energy loss. Moreover, it is estimated that HD KSOE’s LPG CHS could achieve about 18 percent improvement in reliquefaction efficiency compared to conventional systems. This innovation improves vessel operating efficiency while ensuring compliance with increasingly stringent IMO environmental regulations. Vibration levels also remained stable throughout the operation, further demonstrating the system’s robustness.
Jan Andersson, MD of SeaQuest Marine, said that SeaQuest Marine, with its extensive experience in the gas carrier newbuilding segment and involvement in nearly 100 gas projects, has taken the lead in adopting HD KSOE’s innovative CHS and reliquefaction system. “The system combines intelligent design with reliable and robust performance, significantly reducing energy consumption in both DF-mode operation and onboard cargo reliquefaction. Having been implemented on several recent VLGC newbuilding projects, the system has already proven its ability to deliver the anticipated energy savings in real ship operations.”
HD KSOE secured its first order for the LPG CHS in June 2023 and has since expanded its portfolio to 48 shipsets under contract, reflecting strong demand from shipowners worldwide.
