大气环境对内燃机热电联供系统性能的影响  

The Influence of Ambient on the Performance of Internal Combustion Engine Cogeneration System

作　　者：蒋润花[1] 杨晓西[1] 蔡睿贤[2] 杨敏林[1] 杨小平[1] 

机构地区：[1]东莞理工学院广东省分布式能源系统重点实验室,广东东莞523808 [2]中国科学院工程热物理研究所,北京100190

出　　处：《工程热物理学报》2011年第5期733-736,共4页Journal of Engineering Thermophysics

基　　金：973计划项目(No.2010CB227306);863计划目标导向项目(No.2009AA052218);广东省重大科技专项(No.2009A0803);东莞理工学院自然科学基金(No.2010ZQ09)

摘　　要：根据国家标准GB1105 1-87《内燃机台架性能试验方法标准环境状况及功率、燃油消耗率和机油消耗率的规定》中的等过量空气法,结合内燃机典型变工况解析式及单压过热蒸汽余热锅炉变工况解析解,研究大气条件变化时,系统变工况性能。结果表明,大气压力p_0减小,内燃机相对输出功率(?)减小,相对燃油消耗率(?)增加,系统总能利用率Z减小,当量(?)效率η_(ex)、相对节能率FESR、经济(?)效率θ先增加后减小,存在最大值,在80 kPa左右取得最大值。大气温度t_O升高,(?)减小,(?)增加,Z、η_(ex)、FESR、θ增加。According to the national standard GB1105.1-87,Performance Test Methods for Reciprocating Internal Combustion Engine-Standard Ambient Conditions and Declarations of Power, Fuel Consumption and Lubricating Oil Consumption,combined with the typical off-design analysis formula of internal combustion engines and analytical off-design performances of heat recovery steam generator（HRSG）,the law of excess air was applied in this article.When ambient conditions are changed,the off-designed performance of cogeneration system has been investigated. With decreasing of ambient pressure,the relative power output of internal combustion engine P_e and total energy efficiency Z decreased,relative fuel consumption b_e increased,equivalent exergy efficiencyη_（ex）,economic exergy efficiencyθand fuel energy saving-ratio FESR increased first and then decreased,they existed maximal value when the atmospheric pressure was about 80 kPa. With increasing of ambient temperature,the relative power output of internal combustion engine P_e decreased,relative fuel consumption b_e increased,total energy efficiency Z,equivalent exergy efficiencyη_（ex）,economic exergyθefficiency and fuel energy saving-ratio FESR increased to some extent.

关 键 词：变工况 内燃机 热电联供 大气环境 余热锅炉 

分 类 号：TK123[动力工程及工程热物理—工程热物理]