한국해양대학교

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전동기 구동 카고 펌프의 선박적용 및 경제성에 관한 연구

Title
전동기 구동 카고 펌프의 선박적용 및 경제성에 관한 연구
Alternative Title
A Study on the Application and Economical Efficiency of Electric Driven Cargo Pumping Systems to Ships
Author(s)
조동주
Publication Year
2012
Publisher
효성문화사
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175770
http://repository.kmou.ac.kr/handle/2014.oak/10067
Abstract
This study has been conducted to compare two cargo handling systems on MR tanker and Panamax tanker. Submerged hydraulic cargo pumps with hydraulic powerpacks (Hydraulic Systems) and frequency converter controlled electric deepwell pumps (Electric Systems) will be investigated and compared on all aspects of initial cost, installation, operation and maintenance.

The result of investigation shows Electric Systems have less manufacturing costs, higher environmental friendliness and reliable operation compare to Hydraulic Systems. Furthermore, the present experimental data will provide important database for Electric Systems onboard new ships and practical and empirical guidelines are constructed for further determine the design of the Electric Systems.

As a practical installation of Electric Systems, one of TOTAL FPSO and Teekay FPSO, some design criteria like air cooled converter room design, high viscosity operation, operation procedures and deepwell pump installation were introduced.



The environmental aspects are of great importance today, and this report concludes that energy consumption clearly favors Electric Systems compare to Hydraulic System. On the two reference vessels, annual fuel saving in generating the needed cargo discharge power can be estimated up to 17 % savings compare to Hydraulic System.

It is also possible that hydraulic oil pipes on deck could corrode and leak oil and subsequently be responsible for an oil spill.



Following main features for Electric Systems can be listed:

● Environmental friendly

● Proven record from FPSO, LPG ships & Chemical Tanker

● Less maintenance cost compare to Hydraulic Systems

● Stepless control by frequency converter

● Less total weight and less noise than Hydraulic Systems

● Improved efficiency compare to Hydraulic Systems

● Electric Systems can be fully utilized to handle liquids in a big specific gravity and high viscosity variation range.



Finally, this report carried out an extensive economically analysis, based on Capex* and Opex*, and concluded that savings could be made by specifying Electric Systems on the two reference vessels and FPSO project. Economical analysis has been based on new built in Korea.



* Capex
Operating Expense
Capital Expenditures, Opex
Appears in Collections:
해양시스템공학과 > Thesis
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000002175770.pdf Download

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