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Title
Improving the efficiency of a gas-fueled ship power plant using a Waste Heat Recovery metal hydride system

ISSN printed: 1733-8670, ISSN on-line: 2392-0378
Cherednichenko, Oleksandr1; Tkach, Mykhaylo2; Timoshevskiy, Boris3; Havrysh, Valerii4; Dotsenko, Serhii5
URI: https://repository.am.szczecin.pl/handle/123456789/2559
2019-10-04
Due to environmental, energy, and operating cost constraints, the number of liquefied natural gas (LNG)–powered ships is increasing. To avoid decreasing the thermal efficiency of two-stroke, low-speed diesel engines, high-pressure gas injection is used. The specific energy consumption of a gas fuel compressor is around 0.35 kWh/kg, which has a negative impact on the efficiency of ship power plants. To reduce the primary energy consumption of a gas fuel supply system, waste heat recovery (WHR) technologies may be used. This study investigated whether WHR metal hydride technology was suitable for improving the efficiency of low-grade heat waste in marine diesel engines. The key factors of this technology were revealed, and the design scheme was described. Working fluids were also analyzed, and a mathematical model of a WHR metal hydride plant was developed, and the results were represented. The calculations showed that the above technology could increase the operating power of a propulsion plant by 5.7–6.2%. The results demonstrate the possibility of applying WHR metal hydride equipment for gas fuel compressor drives in LNG-powered ships. The novelty of this study lies in the investigation of metal hydride technology for application in the waste heat recovery systems of LNG-powered ships.
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Title

Improving the efficiency of a gas-fueled ship power plant using a Waste Heat Recovery metal hydride system

Pages

9-15

Figures

2

Tables

4

ISSN printed

1733-8670

ISSN on-line

2392-0378

DOI

10.17402/346

Type

Journal

59 Scientific Journals of the Maritime University of Szczecin, no. 59 / 2019

Publisher

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Copyright Holder

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Published

2019-10-04

Recieved

2019-09-06

Accepted

2019-09-16

Funding

No data

Keywords

waste heat recovery, low-speed engine, metal-hydride, hydrogen, LNG-powered ship, total waste heat utilization factor

URI:

https://repository.am.szczecin.pl/handle/123456789/2559

Language

English

Authors

Cherednichenko, Oleksandr1; Tkach, Mykhaylo2; Timoshevskiy, Boris3; Havrysh, Valerii4; Dotsenko, Serhii5

Affiliation

1 Admiral Makarov National University of Shipbuilding 9 Heroiv Ukraine Ave., 54025, Mykolayiv, Ukraine Operation of Ship’s Power Plants and Heat Power Department, cherednichenko.aleksandr65@gmail.com
2 Admiral Makarov National University of Shipbuilding 9 Heroiv Ukraine Ave., 54025, Mykolayiv, Ukraine Department of Engineering Mechanics and Mechanical Technology, mykhaylo.tkach@gmail.com
3 Admiral Makarov National University of Shipbuilding 9 Heroiv Ukraine Ave., 54025, Mykolayiv, Ukraine Department of Internal Combustion Engines, Plants and Technical Exploitation, borys.tymoshevskyy@gmail.com
4 Mykolayiv National Agrarian University Department of Tractors and Agricultural Machinery, Operating and Maintenance 9 Georgiy Gongadze St., 54020 Mykolayiv, Ukraine, havryshvi@mnau.edu.ua
5 Admiral Makarov National University of Shipbuilding, Pervomaisk Polytechnic Institute 109 Odeska St., 55202 Pervomaisk, Mykolayiv region, Ukraine, admin@ppi.net.ua

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