Reduction of lighting power consumption through lighting control using the KNX/digital addressable lighting interface protocol in liquefied natural gas carrier accommodation mock-up

Jin Kim and Anseop Choi

Renewable and Sustainable Energy Reviews, 2023, vol. 182, issue C

Abstract: Lighting in ships is the main energy consumer in the overall power system and is closely associated with the creation of visual comfort and a safe work environment for the crew. A convergence point between the energy efficiency of ship lighting and a safe work environment for the crew can be achieved in various ways. This study applied the KNX and Digital Addressable Lighting Interface (DALI) systems to a mega-ship. A mock-up identical to an accommodation unit in an actual Liquefied Natural Gas Carrier in construction was developed, where the lighting for ships was installed and the KNX/DALI protocol, and occupancy sensors were applied as the lighting control system. The measurement of the 24 h power consumption with a conventional lighting arrangement design and the KNX/DALI system indicated that the lighting power consumption decreased from 12,935.2 to 2830.3 W h, implying a ≥80% reduction. This lighting solution involves control based on the traffic line of the crew at work, which plays a key role in enhancing the energy efficiency of the ship, promoting a safe work environment and visual comfort for the crew, and maximizing integration with other digital systems of the ship.

Keywords: KNX/DALI lighting Control; Lighting energy saving; Liquefied natural gas carrier; Accommodation unit (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.rser.2023.113374

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