Identification of waste heat energy sources of a conventional steam propulsion plant of an LNG carrier

• Autorzy: Adamkiewicz Andrzej , Grzesiak Szymon

Identyfikatory

DOI

10.24425/ather.2019.130001

• Języki publikacji: EN

Abstrakty

EN

This paper presents the origins of marine steam turbine application on liquefied natural gas carriers. An analysis of alternative propulsion plant trends has been made. The more efficient ones with marine diesel engines gradually began to replace the less efficient plants. However, because of many advantages of the steam turbine, further development research is in progress in order to achieve comparable thermal efficiency. Research has been carried out in order to achieve higher thermal efficiency throughout increasing operational parameters of superheated steam before the turbine unit; improving its efficiency to bring it nearer to the ideal Carnot cycle by applying a reheating system of steam and multi stage regenerative boiler feed water heating. Furthermore, heat losses of the system are reduced by: improving the design of turbine blades, application of turbine casing and bearing cooling, as well as reduction in steam flow resistance in pipe work and maneuvering valves. The article identifies waste energy sources using the energy balance of a steam turbine propulsion plant applied on the liquefied natural gas carrier which was made out basing on results of a passive operation experiment, using the measured and calculated values from behavioral equations for the zero-dimensional model. Thermodynamic functions of state of waste heat fluxes have been identified in terms of their capability to be converted into usable energy fluxes. Thus, new ways of increasing the efficiency of energy conversion of a steam turbine propulsion plant have been addressed.

Słowa kluczowe

EN

waste heat energy; steam turbine; efficiency; propulsion plant

PL

energia cieplna odpadowa; silnik parowy; wydajność; instalacja napędowa

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2019
• Tom: Vol. 40, no 3
• Strony: 195--210
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wz.

Twórcy

autor

Adamkiewicz Andrzej

• Maritime University of Szczecin, Faculty of Maritime Engineering, Wały Chrobrego 1-2, 70-500 Szczecin, Poland

autor

Grzesiak Szymon

• Maritime University of Szczecin, Faculty of Maritime Engineering, Wały Chrobrego 1-2, 70-500 Szczecin, Poland

Bibliografia

• [1] Adamkiewicz A.: Technological development possibilities of heat turbines in LNG carrier power systems. In: Steam Turbines: Theory. Construction. Operation. Wydawn. Politechniki Śląskiej, Gliwice 2016, 13–23 (in Polish).
• [2] Adamkiewicz A., Grzesiak S.: Evolution of energy efficiency of modern lng carrier’s steam turbine propulsion plant. Rynek Energi 130/3(2017), 92–98 (in Polish).
• [3] Adamkiewicz A., Michalski R., Zeńczak W.: Selected Problems of Energy Conversion Technologies in Marine Power Engineering Systems. Kaprint, Lublin 2012 (in Polish).
• [4] Gawron M., Przybyła K., Lipnicki Z.: Exhaust Gas Flow Conditions in the Chimney and Acid Dew Point. Zeszyty Naukowe Uniwersytetu Zielonogórskiego 144(2011), 48–59 (in Polish).
• [5] Grzesiak S.: Alternative propulsion plants for LNG Carriers. New Trends in Production Engineering 1(2018), 1, 399–407.
• [6] IGU IGU World LNG Report (2017).: http://www.igu.org (accessed May 2017).
• [7] Ohira H., Hiramatsu, S., Matsumoto S., Fujino Y.: Key technologies for Mitsubishi LNG carrier. MHI Tech. Rev. 44(2007), 3, 1–4.
• [8] Petel M., Nath N.: Improve steam turbine efficiency. Hydrocarb. Process. 79(2000), 6, 85–86, 88, 90.
• [9] Stechman A.: Selected issues in acid corrosion of the flue pipes – calculation of the acid dew point of exhaust gases. Prace Naukowe Instytutu Budownictwa Politechniki Wrocławskiej, Wrocław 2008 (in Polish).
• [10] Szargut J. Ziębik A.: Fundamentals of Thermal Engineering. WNT, Warszawa 1998 (in Polish).
• [11] Technical documentation of an 138k m3 capacity LNG carrier:
• – Piping diagram of engine room.
• – Heat balance for cooling water.
• – Steam balance for auxillart system.
• – On board test procedure with results for engine room auxillary machinery.
• – On board test procedure with results for main boiler.
• – On board test procedure with results for engine room for main steam turbine.
• – Main propultion turbine (Kawassaki UA-400) Vol. 1,2.
• – Main propulsion turbine instruction manual Vol. 1-3.
• – Steam turbine for electric generator (Shinko RG92-2).
• – Feed water pump & steam turbine (Coffin Turbo DEB-16).
• – Main Boiler machinery part (Kawasaki UME 65/50) Vol. 1-2.
• – Main Boiler automation part (Kawasaki UME 65/50) Vol. 1-2.
• – Instruction for operation & maintenace (Main boiler) (Kawasaki UME 65/50) Vol. 1-3.
• – Steam to steam generator (Dongwa BKU).
• – Electric load analysis.
• – Vessel particulars.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).