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ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 22 - Number 3 - Successive Number 3
Type : Research Note
Topics of Paper : Transaction on Mechanical Engineering
English Title : Optimisation of a Waste Heat Exchanger for Ballast Water Treatment
English Abstract : Ballast Water Treatment systems which are type approved and commercially available will require improvements to meet stricter standards. Heat treatment could be a viable additional option. Considering the waste heat potential on a ship, a system harvesting the engine exhaust heat may be envisaged for which a heat exchanger will be vital. Design optimisation of a heater employing exhaust gases of the engine as utility fluid and ballast sea water as the process fluid was achieved using Lagrangian methods, keeping the annual cost as the objective function. Limiting the number of variables, optimal values were calculated with cost considerations for utility fluid and also pumping costs for utility and process fluids. In all, four optimum designs and three comparative designs were developed. Heat balance data from an operational tanker, specific fuel consumption values and fuel costs were considered for the design. The thermodynamic and geometric designs were worked out using computer based software for a comparison. Designs were compared on the basis of annual cost, optimum exit temperature of shell side fluid, optimum mass flow of tube side fluid and heat exchanger effectiveness. It is demonstrated that an optimal heat exchanger design can be obtained with simple optimisation procedures.
English Keywords : Ballast water treatment, Exhaust gases, Waste heat recovery, Heat exchanger, Optimisation.
Refrences :
Number Of Pages :
From 871 to 882


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Rajoo Balaji
(Author)
1Malaysian Maritime Academy (ALAM), Window delivery 2051, Masjid Tanah Post Office, 78300, Melaka, Malaysia    
Prof. Omar Yaakob 2Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Malaysia Professor  
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