LNG 운반선의 3,500kW급 고체산화물형 연료전지 System 성능평가 시뮬레이션

Abstract

Recently, regulations of air pollution are enhanced such as carbon dioxide, nitrogen oxide, sulfur oxide generated during operation vessel. According to the flow and the movement of using the fuel of the vessel to the LNG it is going active, which is evaluated for use as an alternative to traditional petroleum-based fuel that can be absorbed without a shock.

Fuel cell are highlighted that high efficient, less air-pollution. It can be directly converted to the chemical energy into electrical energy through a oxidation-reduction reaction.

Solid Oxide Fuel Cell(SOFC) system can be used H2 by reforming CH4 and made combined cycle with SOFC and Gas turbine designed to take advantage of the features.

The objective is to evaluate by source Program named ‘Thermolib’ for simulation for the performance of Methane fueled SOFC with Gas Turbine(GT) system that adopted for 177K LNGC utilized by Ship’s Load analysis which is assumed to 3,500kW. It were designed Ship’s propulsion load power that is controlled by DF Diesel Engine’s governor and Ship’s base-load power is controlled by SOFC Hybrid System while applying.

Fuel are supplied as both BOG(Boiled Off Gas) and Forcing generated gas to SOFC system. This system is analyzed that supplied Fuel, O2, BOP (Ballance of Plant) power consumption, characteristic of system temperature, stack's power and efficiency at this time.

I was able to maintain system balance of 3,500kW SOFC Hybrid system by changing the flow condition of Fuel, Water, Air.

Through the evaluation, found that system's efficiency which are variable depend on operation condition as follows

SOFC 54.09% / Hybrid System 65.31% to 65.46%.

SOFC 54.09% / Hybrid System 65.0%.

In addition, can organize Hybrid system that make the best use of DFDE's Exh. Gas heat energy for additional heat source. Through the evaluation, found that system's efficiency which are variable depend on operation condition as follows