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首页> 外文期刊>Science and Technology for the Built Environment >Updated generalized natural gas reciprocating engine part-load performance curves for cogeneration applications
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Updated generalized natural gas reciprocating engine part-load performance curves for cogeneration applications

机译：更新的通用天然气往复式发动机部分负载性能曲线用于热电化应用

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摘要

The efficiency of combined heat and power systems, which most commonly utilize natural gas reciprocating engines, is strongly influenced by the performance of generation sets at part-load conditions. However, there is currently a lack of comprehensive data on the part-load performance of generation sets, which can lead to model inaccuracies when evaluating combined heat and power systems early in the design phase. The current work reviews recent manufacturer reports and several industry publications to summarize the part-load thermal and electric performance of 67 natural gas spark ignition reciprocating engines from a wide variety of manufacturers and nominal capacity ranges that are commonly used in combined heat and power applications. Comparisons between linear and nonlinear performance curves for part-load heat-to-power ratios and electric heat rates demonstrated that, for most cases, nonlinear Power Law functions more accurately characterize performance above 50% part-load. The data were also used to develop a set of generalized nonlinear performance curves that extend below 50% part-load ratio that are intended for engineers to use in evaluating combined heat and power systems when more detailed performance data is not available.
机译：最常利用天然气往复式发动机的组合热量和动力系统的效率受到部分负荷条件的产生组性能的强烈影响。但是，目前缺乏关于生成集的部分负荷性能的全面数据，这可能在设计阶段早期评估混合热量和电力系统时导致模型不准确。目前的工作审查最近的制造商报告和几个行业出版物总结了67个天然气火花点火往复式发动机的部分负荷热电平和电气性能，这些产品来自各种制造商和名称容量范围，这些标称容量范围通常用于加热和电力应用。线性和非线性性能曲线之间的比较，用于部分负载热电量比和电热速率，表明，对于大多数情况而言，非线性动力法函数更准确地表征性能高于50％的部分负荷。数据还用于开发一组广义非线性性能曲线，该曲线延长了低于50％的部分负荷比，该曲线均负荷比为工程师在不可用的更详细的性能数据时用于评估组合的热量和电力系统。

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