船用柴油机废热辅助热电联产发电厂的热力学分析

IF 2.7 3区地球科学 Q1 ENGINEERING, MARINE

Journal of Marine Science and Engineering Pub Date : 2024-09-18 DOI:10.3390/jmse12091667

Haydar Kepekci, Cuneyt Ezgi

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引用次数: 0

摘要

本研究的目的是对船用柴油机废热辅助热电联产发电厂进行热力学分析。建议的系统利用主机夹套水和废气中的余热发电和供热，从而减少燃料消耗和二氧化碳排放。该方法包括改变不同的涡轮机进气压力、抽气压力和从涡轮机中抽取的蒸汽分数，以评估它们对效率、利用系数、转换能量等效系数、工艺热率、电力输出、节省的燃料流量、节省的燃料成本和减少的二氧化碳排放量的影响。分析表明，拟议系统的效率为 48.18%，利用率为 86.36%，通过船载蒸汽轮机的单位质量流量可节省高达 57.325 千克/小时的燃料、65.606 美元/小时的燃料成本和 180.576 千克/小时的二氧化碳排放量。

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Thermodynamic Analysis of a Marine Diesel Engine Waste Heat-Assisted Cogeneration Power Plant Modified with Regeneration Onboard a Ship

The objective of this study is to perform a thermodynamic analysis on a marine diesel engine waste heat-assisted cogeneration power plant modified with regeneration onboard a ship. The proposed system utilizes the waste heat from the main engine jacket water and exhaust gases to generate electricity and heat, thereby reducing the fuel consumption and CO2 emissions. The methodology includes varying different turbine inlet pressures, extraction pressures, and fractions of steam extracted from the turbine to evaluate their effects on the efficiency, utilization factor, transformation energy equivalent factor, process heat rate, electrical power output, saved fuel flow rate, saved fuel cost, and reduced CO2 emissions. The analysis demonstrates that the proposed system can achieve an efficiency of 48.18% and utilization factor of 86.36%, savings of up to 57.325 kg/h in fuel, 65.606 USD/h in fuel costs, and 180.576 kg/h in CO2 emissions per unit mass flow rate through a steam turbine onboard a ship.

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来源期刊

Journal of Marine Science and Engineering Engineering-Ocean Engineering

CiteScore

4.40

自引率

20.70%

发文量

1640

审稿时长

18.09 days

期刊介绍： Journal of Marine Science and Engineering (JMSE; ISSN 2077-1312) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to marine science and engineering. It publishes reviews, research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.