| 摘要: |
| 为保证复合热源热泵系统在复杂工况下的稳定运行和进一步优化系统各组件之间合理、高效的能量匹配,本文设计并搭建了基于微热管阵列的太阳能-空气复合热源热泵系统，采用集中参数法建立系统数学模型，分别从系统的发电效率、集热效率、制热功率和性能系数（COP）4个方面基于实验数据进行模型验证与分析，利用控制变量法研究了太阳辐照度和环境温度等参数对热泵系统在光伏/光热-水&空气源热泵运行模式下系统性能的影响，并对其运行特性进行综合评价。结果表明：所建数学模型具有较好的准确性，模拟值与实验值的相对误差均在±15%之间。光伏/光热-水&空气源热泵系统运行模式下发电效率和集热效率均值分别为13.91%和41.14%，COP均值为2.29。此外，当辐照度和环境温度分别以500 W/m2和15 ℃为单一变量时，系统COP分别提升21%和29.8%。 |
| 关键词: 热泵 性能系数 光伏/光热 传热性能 |
| DOI： |
| Received:November 08, 2021Revised:May 03, 2022 |
| 基金项目: |
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| Simulation Analysis of Solar-air Dual Heat Source Heat Pump System |
|
Wang Gang1, Yang Yongqing1, Yu Wan1, Hu Tao1, Han Xilian2
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| (1.College of Mechanical and Power Engineering, China Three Gorges University;2.College of Petrochemical Engineering, Lanzhou University of Technology) |
| Abstract: |
| This study designs and establishes a solar-air dual heat source heat pump system based on a micro-heat pipe array to ensure the stable operation of the multiple heat source heat pump system under complex operating conditions and further optimize the reasonable and efficient energy matching among the system components. A mathematical model of the system is established using the centralized parameter method. The model validation and analysis are based on experimental data from four aspects: system power-generation efficiency, heat-collection efficiency, heating capacity, and heat pump COP. The influence of parameters such as solar irradiance and ambient temperature on the performance of heat pump systems in the photovoltaic/thermal-water & air-source heat pump (PV/T-W&ASHP) operation mode is investigated using the control variable method, and the operational characteristics are comprehensively evaluated. The results show that the proposed mathematical model has considerable accuracy, and the relative errors between the simulated and experimental values are all between ±15%. The average values of the power-generation efficiency and heat-collection efficiency under the PV/T-W&ASHP operation mode are 13.91% and 41.14%, respectively, and the average COP is 2.29. Moreover, when irradiance and ambient temperature are considered a single variable of 500 W/m2 and 15 °C, the system COP is improved by 21% and 29.8%, respectively. |
| Key words: heat pump coefficient of performance photovoltaic/thermal heat transfer performance |
