SMDERI-QET (Shanghai Qiyao Environmental Technology Co., Ltd.) has announced a significant breakthrough in marine clean energy technology, successfully completing the skid integration of its cutting-edge LNG Subcooling System (LSC) for a 175,000 cubic meter (175K) LNG carrier. This achievement, completed on July 14th, marks a pivotal step forward in enhancing the efficiency and environmental footprint of the global LNG shipping fleet.
The integrated LSC skid is now undergoing rigorous land-based performance testing, a critical phase to validate its operational capabilities before its scheduled delivery to the renowned Jiangnan Shipyard in late August. This collaboration with Jiangnan Shipyard, a leading builder of advanced gas carriers in China, underscores the importance and scale of the project.
As the global maritime industry increasingly adopts Liquefied Natural Gas (LNG) as a cleaner-burning marine fuel, managing “boil-off gas” (BOG) remains a key challenge for LNG carriers. BOG is the natural evaporation of LNG within cargo tanks due to heat ingress, even in highly insulated tanks. If not properly managed, this gas can lead to cargo loss, increased emissions, and operational inefficiencies.
An LNG Subcooling System (LSC) is a sophisticated onboard refrigeration unit designed to address this challenge. It deep-cools the LNG cargo, typically below its saturation temperature, thereby significantly reducing or even eliminating the generation of BOG. By re-liquefying the boil-off gas, LSC technology ensures that valuable cargo is preserved and can be re-introduced into the tanks, optimizing cargo delivery and reducing methane emissions that contribute to global warming. This not only enhances the economic viability of LNG transport but also aligns perfectly with the industry’s drive towards greater environmental sustainability.
SMDERI-QET’s LSC system incorporates several optimized innovations that set it apart:
The successful completion and upcoming delivery of this LSC skid for a 175K LNG carrier holds significant implications for the clean energy shipping sector:
This milestone reinforces SMDERI-QET’s commitment to advancing maritime technology and underscores China’s increasing role in developing critical solutions for a more sustainable future in global energy logistics.
Shanghai Qiyao Environmental Technology Co., Ltd. (SMDERI-QET) is a key technology platform under China State Shipbuilding Corporation (CSSC), specialising in the development of marine environmental protection equipment. Its two core business lines—emission control and energy upgrading—underscore its commitment to helping the shipping industry reduce greenhouse gas and pollutant emissions.
SMDERI-QET is recognised globally for its advanced solutions such as the Exhaust Gas Cleaning System (EGCS) and Selective Catalytic Reduction System (SCR). As the industry moves towards a greener future, the company continues to innovate in areas like Fuel Gas Supply Systems (FGSS), Onboard Carbon Capture and Storage Systems (OCCS), LNG Sub-cooling Systems (LSC), and Methane Oxidation Catalysts (MOC).
Its vision is clear: lead through innovation, serve with excellence, and shape a sustainable maritime industry.
