The influence of condensing pressures of the ethylene carrier cascade cycle on its refrigeration capacity

• Autorzy: Nanowski D.
• Języki publikacji: EN

Abstrakty

EN

Ethylene, Propane and others liquefied gases as a cargo are transported at sea by temperature below 0°C. It requires sufficient efficiency of reliquefaction plant. Short description of that gas plant is shown including cascade system and its cooling processes are described. Based on Mollier diagrams the refrigeration capacity investigation of gas plant is done. This analysis is focused on condensing pressure which takes place in the condenser. Theoretical cycles are taken into account and real condensers of cargo compressor and screw compressor of refrigerant cycle are considered. Thermostatic expansion valves are employed in cascade cycles and their operation parameters are taken into account as well. Conclusions include some guidelines on condensing pressure and related operation parameters to maintain the gas plant with high efficiency of refrigeration capacity.

Słowa kluczowe

EN

refrigeration cycle; reliquefaction plant; condensing pressure; Ethylene gas carrier

PL

chłodnictwo; skraplanie roślin; ciśnienie skraplania; przewoźnik; gaz etylenowy

• Wydawca: Faculty of Ocean Engineering and Ship Technology, Gdańsk University of Technology
• Czasopismo: Journal of Polish CIMAC
• Rocznik: 2014
• Tom: Vol. 9, no 3
• Strony: 67--72
• Opis fizyczny: Bibliogr. 6 poz., rys., tab., wykr.

Twórcy

autor

Nanowski D.

• Gdynia Maritime Univeristy ul. Morska 81-87, 81-226 Gdynia, Poland tel.: [phone]

Bibliografia

• [1] Bohdal, T., Charun, H., Czapp, M., Urządzenia chłodnicze sprężarkowe parowe, Wydawnictwo Naukowo-Techniczne, Warsaw 2003.
• [2] Coolpack 1.49 – IPU& Department of Mechanical Engineering Technical University of Denmark.
• [3] Królicki, Z., Termodynamiczne podstawy obniżania temperatury, Oficyna Wydawnicza Politechniki Wrocławskiej, Wrocław 2006.
• [4] McGuire and White, Liquefied gas principles on ships and in terminals, Witherby &Co, London 2000.
• [5] Nanowski, D., Wybrane parametry procesów termodynamicznych rzeczywistego obiegu kaskadowego wykorzystywanego do morskiego transport etylenu, Technika Chłodnicza i Klimatyzacyjna, № 4(194), 2012, pp.182-185.
• [6] Nanowski, D., Gas plant of Ethylene gas carrier and two stages compression optimization of Ethylene as a cargo based on thermodynamic analysis, Journal of Polish CIMAC, 2012, vol 7, pp183-190