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http://dx.doi.org/10.7837/kosomes.2012.18.3.279

A Study of Liquid Nitrogen Inert Gas System for LNGC Diesel Engine Crank Chamber  

Choi, Bu-Hong (Division of Marine Engineering System, Mokpo National Maritime University)
Kim, Hyun-Soo (Division of Marine Engineering System, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.18, no.3, 2012 , pp. 279-285 More about this Journal
Abstract
It is necessary to install the inert gas system(IGS) for preventing fire and explosion in LNGC main diesel engine crankcase besides oil mist detector(OMD) unit with $CO_2$ gas injector. Therefore, to design the liquid nitrogen IGS, analytical work is conducted for predicting the heat input load of liquid nitrogen heater with two-phase stratified flow model. This paper also presents the effects of changes in pipe diameter, saturated pressure, and inclination angle by ship's movement on cryogenic two-phase stratified flows. It is found that the stratified model gives reasonable predictions, and the model is effective to predict the heat input load of liquid nitrogen IGS.
Keywords
Inert Gas System(IGS); LNGC; Cryogenic Fluid; Liquid Nitrogen; Two-Phase Stratified Flow;
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