Thermodynamic Analysis of a Condensate Heating System from a Marine Steam Propulsion Plant with Steam Reheating  

采用蒸汽再加热的船用蒸汽推进装置冷凝加热系统的热力学分析

作　　者：Vedran Mrzljak Ivan Lorencin Nikola Anđelić Zlatan Car 

机构地区：[1]Faculty of Engineering,University of Rijeka,Vukovarska 58,51000 Rijeka,Croatia

出　　处：《Journal of Marine Science and Application》2021年第1期117-127,共11页船舶与海洋工程学报（英文版）

基　　金：This research is supported by the Croatian Science Foundation under the project IP-2018-01-3739,CEEPUS network CIII-HR-0108,European Regional Development Fund under the grant KK.01.1.1.01.0009(DATACROSS);project CEKOM under the grant KK.01.2.2.03.0004,CEI project“COVIDAi”(305.6019-20);University of Rijeka Scientific Grants uniri-tehnic-18-275-1447,uniritehnic-18-18-1146 and uniri-tehnic-18-14.

摘　　要：The thermodynamic(energy and exergy)analysis of a condensate heating system,its segments,and components from a marine steam propulsion plant with steam reheating is performed in this paper.It is found that energy analysis of any condensate heating system should be avoided because it is highly influenced by the measuring equipment accuracy and precision.All the components from the observed marine condensate heating system have energy destructions lower than 3 kW,while the energy efficiencies of this system are higher than 99%.The exergy efficiency of closed condensate heaters continuously increases from the lowest to the highest steam pressures(from 70.10%to 92.29%).The ambient temperature variation between 5℃and 45℃notably influences the exergy efficiency change of both low pressure heaters and the low pressure segment equal to 31.61%,12.37%,and 18.35%,respectively.

关 键 词：Condensate heating system Marine steam propulsion plant Steam reheating Thermodynamic analysis Energy and exergy analyses Segmental analysis Ambient temperature change 

分 类 号：U664.3[交通运输工程—船舶及航道工程]