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空气源热泵性能一致性指数的理论框架与运行诊断应用
Theoretical Framework of Performance Consistency Index and Its Application in Operational Diagnostics for Air-Source Heat Pumps
- 默认刊物名称 2025年
- 作者机构：
1.中国建筑科学研究院有限公司 建筑环境与能源研究院，北京 100013
2.建科环能科技有限公司, 北京 100013
3.天津大学，天津 300072
- 作者简介：
杨强(1979-) ，男，博士生在读，正高级工程师
徐昭炜，男，博士，正高级工程师，中国建筑科学研究院有限公司建筑环境与能源研究院，010-64517193-803，E-mail：xuzw@emcso.com。研究方向：建筑节能、可再生能源利用、暖通空调设备性能评价技术研究。
- 基金信息：本文受西藏自治区科技计划项目(西藏极端气象条件下人工环境的绿色建筑关键技术与标准体系研究┣XZ202301ZY0017G┫┫。（The project was supported by the Research on Key Technologies and Standard Systems of Green Buildings in Artificial Environments under Extreme Meteorological Conditions in Xizang┣XZ202301ZY0017G)
DOI：
中图分类号： TU831收稿日期：2025-04-03，
- 稿件说明：
移动端阅览
杨强, 李浩, 徐昭炜, 等. 空气源热泵性能一致性指数的理论框架与运行诊断应用[J/OL]. 默认刊物名称, 2025.
Yang Qiang, Li Hao, Xu Zhaowei, et al. Theoretical Framework of Performance Consistency Index and Its Application in Operational Diagnostics for Air-Source Heat Pumps[J/OL]. Moren journal, 2025.
摘要
空气源热泵实际运行诊断中，针对单一制热性能系数因工况依赖性难以区分环境效应与机组性能退化的局限性，本文提出基于热力学第二定律的性能一致性指数的指标。该指标以铭牌标识工况热力学完善度为基准，通过归一化实际工况下的热力学完善度，构建兼具工况鲁棒性与设计对标能力的能效诊断方法。研究表明，性能一致性指数继承热力学完善度的稳定性与可比性，有效解耦环境参数波动与机组性能退化的耦合影响，其值可独立于运行工况，精准表征机组状态。通过以1为设计基准，量化机组实际性能与设计目标的偏差。基于对4台机组实际运行诊断的验证，性能一致性指数成功识别部分负荷能效衰减与低温性能劣化。性能一致性指数为空气源热泵长效节能监管提供了理论工具，通过设定阈值可精准定位低效机组，支撑“煤改电”设备更新的科学化决策。
Abstract
In the operational diagnosis of air-source heat pumps
the conventional coefficient of performance faces limitations in distinguishing environmental effects from equipment performance degradation due to its dependency on operating conditions. To address this
this study proposes performance consistency index
based on the second law of thermodynamics. By normalizing the thermodynamic perfectibility under actual operating conditions against its rated value at nameplate conditions
this index establishes an energy efficiency diagnostic method with both operational robustness and design bench-marking capabilities. The study demonstrates that the performance consistency index
inherits the stability and comparability of thermodynamic perfectibility
effectively decouples the impacts of environmental parameter fluctuations and equipment performance degradation
remains independent of operating conditions
and accurately characterizes equipment status. By setting 1 as the design benchmark
deviations between actual performance and design objectives are quantified. Validation through operational diagnosis of four units confirms that the performance consistency index
successfully identifies partial-load energy efficiency degradation and low-temperature performance degradation. The performance consistency index provides a theoretical tool for long-term energy efficiency conservation of air-source heat pumps
enabling precise identification of inefficient units through threshold settings and supporting scientific decision-making for equipment renewal in "coal-to-electricity" projects.
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references
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