Engineering Design in Retrofitting LNG Fuel Tanks for Shipping in Combating Exhaust Emissions

11 Pages Posted: 15 Nov 2019

See all articles by Ivan CK Tam

Ivan CK Tam

Newcastle University

Arun Kr Dev

Newcastle University

Chun Wee Ng

Newcastle University

Ivan Stoytchev

Joint Branch of The Royal Institution of Naval Architects (RINA) & The Institute of Marine Engineering, Science and Technology (IMarEST)

Livio Deltin

Joint Branch of The Royal Institution of Naval Architects (RINA) & The Institute of Marine Engineering, Science and Technology (IMarEST)

Date Written: November 14, 2019

Abstract

Significant pressure is being placed on shipping industry, known to be conservative to new technologies, to reduce engine exhaust emissions. The exhaust emissions from marine engines include SOx, NOx and particulate matters (PM) as well as CO2, a greenhouse gas (GHG) which is increasing steadily due to globalization in trade. This study proposes an engineering design to retrofit a typical bulk carrier with liquefied natural gas (LNG) fuel tanks. The report also evaluates engineering modification with cost reduction and minimum downtime set as ultimate objectives. One key aspect in ship owners’ considerations in capital expenditure is the payback period of an investment. Through the cost analysis, the payback period of a LNG retrofit was estimated at 3.5 years against a MGO fueled ship or 4.5 years against a 0.5% S compliant fueled vessels. This payback period is reasonable and it shows retrofitting vessels with LNG fueled engine as an attractive option. Several other innovative ideas were considered before this concept design was finally selected with a mini-cape size bulk carrier of 5 to 10 years of age used as a case study. As a result of LNG being used as a marine fuel, it will lead to complete removal of SOx and PM emissions. A reduction of NOx emission of up to 85% and a reduction of up to 25% CO2 emission from shipping industry is made possible.

Keywords: engineering design, innovation, liquefied natural gas, greenhouse gas

Suggested Citation

Tam, Ivan CK and Dev, Arun Kr and Ng, Chun Wee and Stoytchev, Ivan and Deltin, Livio, Engineering Design in Retrofitting LNG Fuel Tanks for Shipping in Combating Exhaust Emissions (November 14, 2019). Available at SSRN: https://ssrn.com/abstract=3486748 or http://dx.doi.org/10.2139/ssrn.3486748

Ivan CK Tam (Contact Author)

Newcastle University ( email )

5 Barrack Road
Devonshire Building
NEWCASTLE UPON TYNE, NE1 7RU
United Kingdom
+6569086009 (Phone)

HOME PAGE: http://https://www.ncl.ac.uk/singapore/about/staff/profile/ivantam.html#background

Arun Kr Dev

Newcastle University ( email )

5 Barrack Road
Devonshire Building
NEWCASTLE UPON TYNE, NE1 7RU
United Kingdom
+6569086012 (Phone)

HOME PAGE: http://https://www.ncl.ac.uk/singapore/about/staff/profile/akdev.html#background

Chun Wee Ng

Newcastle University ( email )

5 Barrack Road
Devonshire Building
NEWCASTLE UPON TYNE, NE1 7RU
United Kingdom

Ivan Stoytchev

Joint Branch of The Royal Institution of Naval Architects (RINA) & The Institute of Marine Engineering, Science and Technology (IMarEST) ( email )

Singapore

Livio Deltin

Joint Branch of The Royal Institution of Naval Architects (RINA) & The Institute of Marine Engineering, Science and Technology (IMarEST) ( email )

Singapore

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