A study on the Development of Energy-Saving Device “Crown Duct”
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초록
A energy saving device "Crown duct" has been developed and its efficiency gain has been verified experimentally in the towing tank of SSPA. The preswirl stator is well known as one of energy saving devices, which recovering the rotational energy of propeller slipstream. Crown duct has two functions of recovers the rotational energy by three blades on top of duct and of flow concentration by semi-duct. The model tests showed 4.4% efficiency gain with Crown Duct at full load condition and 6.9% at ballast condition compared with the bare hull ones for the middle class tanker.
Abstract
A energy saving device "Crown duct" has been developed and its efficiency gain has been verified experimentally in the towing tank of SSPA. The preswirl stator is well known as one of energy saving devices, which recovering the rotational energy of propeller slipstream. Crown duct has two functions of recovers the rotational energy by three blades on top of duct and of flow concentration by semi-duct. The model tests showed 4.4% efficiency gain with Crown Duct at full load condition and 6.9% at ballast condition compared with the bare hull ones for the middle class tanker.
참고문헌 (6)
- Asaumi. T., "Effectiveness of an Energy Saving Device ‘FriendFin'", Conference Proceedings, 3, pp.261~264 (2006), The Japan Society of NavalArchitecture and Ocean Engineering
- Chosun50K Tanker with Crown Duct, "Lare T. Gustafsson", SSPA, ~ (2011)
- Lee, J. T., "Development of a Preswirl Stator-Propeller Systemfor Improvement of Propulsion Efficiency : a SymmetricStator Propulsion System", Transactions of the Society ofNaval Architects of Korea, 29(4), pp.132~145 (1992)
- Lee, J. T., "Development of a Preswirl Stator Propulsion System fora 300K VLCC", Transactions of the Society of NavalArchitects of Korea, 31(1), pp.1~13 (1994)
- 이귀주, "Development of Complex Energy Saving Device", 한국해양공학회지, 26(3), pp.1~5 (2012), 한국해양공학회[DOI]
- Development of own Energy-Saving Device for SPP, "Lee, K.J", Chosun University, ~ (2012)