Effect of Utilization Exhaust and Recirculation Gases of Ship Diesel Engine in Absorption Chiller

Abstract

AbstractTechnical regulation is carried out based on the real possibility of ensuring the required level of environmental friendliness of harmful emissions. Requirements for the environmental safety of ships are developed by the International Marine Organization (IMO). The requirements of IMO standards, applications and protocols of the MARPOL 73/78 convention regulate technical, organizational and legal issues of environmental protection at sea. Their implementation often leads to reduction of the economic and energy performance of marine diesel engines. However, the main difficulties in ensuring the environmental safety of internal combustion engines are associated with the selectivity of the components of the exhaust gases system. The innovative scheme of Exhaust Gas Recirculation (EGR) system with using the heat of recirculation gas by absorption chiller (ACh) for cooling the air at the intake of main ship engine is proposed. The effect of using the heat of recirculation gas for cooling engine intake air is analyzed taking into account the changing climatic conditions on the vessel's route line. The results of calculations have decrease in the specific fuel consumption of engines of the 6G50ME-C9.6-TIII type to 163.0–167.3 g/(kW·h). When the air at the engine inlet is cooled to ACh using the heat of exhaust and recirculated (ecological) gases, the annual fuel economy increases, respectively: to 200.9 t. KeywordsAbsorption chillerHarmful emissionsEcologyExhaust gas recirculation