Natural Gas Options for a Harbor Tug - SNAME-022-2013
Natural Gas Options for a Harbor Tug SNAME-022-2013 August 1, 2013
Description The paper discusses Natural gas options as CNG, LNG & ANG for ships. Steps of Natural Gas requirement calculations for a 60 Ton pull Harbor Tug fitted with Natural Gas Engines, using a load profile is shown. The evaluation is made for a propeller curve engine and for a constant RPM engine. Similar evaluations are made for the Harbor Tug fitted with equivalent Diesel Engines. Emissions and Fuel price comparisons are then made between Diesel and Natural Gas fuels. A concept of EEDI is suggested to cover Tugs, Trawlers and similar vessels.
Authors 1. Prof. SC Misra, Director, IMU-Visakhapatnam
After obtaining a degree in Naval Architecture, in the early 70s, Sri S C Misra had joined M/s Hindustan Shipyard as a design engineer. In pursuit of higher education he went to UK and obtained his Ph. D from University of New Castle upon Tyne, UK. He then joined the Indian 1
Institute of Technology, Kharagpur and took up teaching. He has been a Professor and Head of the Department of Naval Architecture and Ocean Engineering till end February 2009, whence he had taken over as Director of the National Ship Design and Research Centre, Visakhapatnam. Currently he holds the post of Director of Indian Maritime University, Visakhapatnam Campus (formerly known as the national Ship Design and Research Center), under the Ministry of Shipping, Government of India. He had been teaching a wide variety of subjects at IIT Kharagpur and his main areas of interest include ship design and production and experimental hydrodynamics. He is involved in a number of sponsored research and industrial consultancy projects. Since taking over as Director of Indian Maritime University, Visakhapatnam Campus, he has started an undergraduate and postgraduate program in Naval Architecture and Ocean Engineering. Under his leadership IMU Visakhapatnam Campus is moving towards becoming a major centre for Ship design and research. 2. Eswara Arun Kishore
Arun Kishore Eswara received his BE (Marine Engineering) from the premier Marine Engineering and Research Institute(MERI), (formerly DMET) India in 2001. He holds a First class Certificate of Competency and has sailed in various engineering ranks up to and including Chief Engineer over a period of 11 years, in Oil and Chemical Tankers, as well as cargo ships. He has good experience in dry-docking, Oil major vettings and technical supervision of ships as well as in commissioning cutter suction dredgers. He joined Indian Maritime University (IMU), Visakhapatnam, India in 2012 and is presently working as a Scientist with the School for Maritime Design and Research. He aims to become a distinguished researcher in the engineering domain. His computer interests include Linux-Open source scientific applications. He can be reached at [email protected].
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3. Ramesh S Upadhyayula
Ramesh S Upadhyayula holds the current position of Chief Manager at Indian Maritime University, Visakhapatnam Campus. He is a Marine Engineer with 1st Class MOT Certificate of Competency. His previous experience includes sailing experience as Chief Engineer on Merchant ships and dredgers. He has been working at National Ship Design & Research Centre (NSDRC) from 1996 onwards in various ship design and research projects. He has published papers in various journals and conferences and can be reached at [email protected]. 4. Avinash Godey
Mr. Avinash Godey, Assistant Professor with two years of teaching/research experience at Indian Maritime University Visakhapatnam Campus. Currently he is pursuing Ph.D degree in Naval Architecture field under supervision of Prof. S.C.Misra. His research interest includes Ship Hydrodynamics. 3
Description The paper discusses Natural gas options as CNG, LNG & ANG for ships. Steps of Natural Gas requirement calculations for a 60 Ton pull Harbor Tug fitted with Natural Gas Engines, using a load profile is shown. The evaluation is made for a propeller curve engine and for a constant RPM engine. Similar evaluations are made for the Harbor Tug fitted with equivalent Diesel Engines. Emissions and Fuel price comparisons are then made between Diesel and Natural Gas fuels. A concept of EEDI is suggested to cover Tugs, Trawlers and similar vessels.
Authors 1. Prof. SC Misra, Director, IMU-Visakhapatnam
After obtaining a degree in Naval Architecture, in the early 70s, Sri S C Misra had joined M/s Hindustan Shipyard as a design engineer. In pursuit of higher education he went to UK and obtained his Ph. D from University of New Castle upon Tyne, UK. He then joined the Indian 1
Institute of Technology, Kharagpur and took up teaching. He has been a Professor and Head of the Department of Naval Architecture and Ocean Engineering till end February 2009, whence he had taken over as Director of the National Ship Design and Research Centre, Visakhapatnam. Currently he holds the post of Director of Indian Maritime University, Visakhapatnam Campus (formerly known as the national Ship Design and Research Center), under the Ministry of Shipping, Government of India. He had been teaching a wide variety of subjects at IIT Kharagpur and his main areas of interest include ship design and production and experimental hydrodynamics. He is involved in a number of sponsored research and industrial consultancy projects. Since taking over as Director of Indian Maritime University, Visakhapatnam Campus, he has started an undergraduate and postgraduate program in Naval Architecture and Ocean Engineering. Under his leadership IMU Visakhapatnam Campus is moving towards becoming a major centre for Ship design and research. 2. Eswara Arun Kishore
Arun Kishore Eswara received his BE (Marine Engineering) from the premier Marine Engineering and Research Institute(MERI), (formerly DMET) India in 2001. He holds a First class Certificate of Competency and has sailed in various engineering ranks up to and including Chief Engineer over a period of 11 years, in Oil and Chemical Tankers, as well as cargo ships. He has good experience in dry-docking, Oil major vettings and technical supervision of ships as well as in commissioning cutter suction dredgers. He joined Indian Maritime University (IMU), Visakhapatnam, India in 2012 and is presently working as a Scientist with the School for Maritime Design and Research. He aims to become a distinguished researcher in the engineering domain. His computer interests include Linux-Open source scientific applications. He can be reached at [email protected].
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3. Ramesh S Upadhyayula
Ramesh S Upadhyayula holds the current position of Chief Manager at Indian Maritime University, Visakhapatnam Campus. He is a Marine Engineer with 1st Class MOT Certificate of Competency. His previous experience includes sailing experience as Chief Engineer on Merchant ships and dredgers. He has been working at National Ship Design & Research Centre (NSDRC) from 1996 onwards in various ship design and research projects. He has published papers in various journals and conferences and can be reached at [email protected]. 4. Avinash Godey
Mr. Avinash Godey, Assistant Professor with two years of teaching/research experience at Indian Maritime University Visakhapatnam Campus. Currently he is pursuing Ph.D degree in Naval Architecture field under supervision of Prof. S.C.Misra. His research interest includes Ship Hydrodynamics. 3
