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Analysis on the heating performance of a gas engine driven air to water heat pump based on a steady-state model

机译:基于稳态模型的燃气轮机气水热泵供暖性能分析

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In this study, the heating performance of a gas engine driven air to water heat pump was analyzed using a steady state model. The thermodynamic model of a natural gas engine is identified by the experimental data and the compressor model is created by several empirical equations. The heat exchanger models are developed by the theory of heat balance. The system model is validated by comparing the experimental and simulation data, which shows good agreement. To understand the heating characteristic in detail, the performance of the system is analyzed in a wide range of operating conditions, and especially the effect of engine waste heat on the heating performance is discussed. The results show that engine waste heat can provide about 1/3 of the total heating capacity in this gas engine driven air to water heat pump. The performance of the engine, heat pump and integral system are analyzed under variations of engine speed and ambient temperature. It shows that engine speed has remarkable effects on both the engine and heat pump, but ambient temperature has little influence on the engine's performance. The system and component performances in variable speed operating conditions is also discussed at the end of the paper.
机译:在这项研究中,使用稳态模型分析了燃气发动机驱动的空气对水热泵的加热性能。通过实验数据确定天然气发动机的热力学模型,并通过几个经验方程式创建压缩机模型。换热器模型是根据热平衡理论开发的。通过比较实验数据和仿真数据验证了系统模型的正确性。为了详细了解加热特性,在广泛的运行条件下分析了系统的性能,尤其讨论了发动机废热对加热性能的影响。结果表明,在这种由燃气发动机驱动的空气到水的热泵中,发动机余热可以提供总热量的1/3。在发动机转速和环境温度变化的情况下分析了发动机,热泵和整体系统的性能。结果表明,发动机转速对发动机和热泵都有显着影响,但是环境温度对发动机性能几乎没有影响。本文结尾还讨论了变速操作条件下的系统和组件性能。

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