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Performance assessment of a hybrid photovoltaic-thermal and heat pump system for solar heating and electricity

机译：用于太阳能加热和电力的混合光伏 - 热泵系统的性能评估

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摘要

This work investigates a solar combined heat and power systems based on hybrid photovoltaic-thermal heat pump systems for the simultaneous provision of space heating and electricity to residential homes. The analysed system connects a photovoltaic-thermal (PVT) panel, through a PVT water tank, to a heat pump. The study is based on quasi-steady state heat transfer and thermodynamic analysis that takes incremental time steps to solve for the fluids temperature changes from the heat pump and the solar PVT panels. The effects of solar irradiance, size of the water tank and the water flow rate in the PVT pipes (laminar and turbulent) on the performance of the system are analysed. Particular focus is made towards the efficiency (electrical and thermal) of the PVT and the COP of the heat pump. Results show that the minimum COP of the heat pump is 4.2, showing the high performance of the proposed hybrid system. increasing the water flowrate through the PVT panel from 3 L/min (laminar) to 17 Limin (turbulent) increases the PVIT's total efficiency (electrical + thermal) from 61% to 64.5%. Increasing the size of the PVT water tank from 1 L to 100 L, increases the total efficiency of the PVT panel by 6.5%. (C) 2019 Elsevier Ltd. All rights reserved.
机译：该工作研究了基于混合光伏 - 热热泵系统的太阳能组合热量和动力系统，用于同时为住宅提供空间加热和电力。分析的系统将光伏 - 热（PVT）面板通过PVT水箱连接到热泵。该研究基于准稳态传热和热力学分析，该热力学分析采用增量时间步骤来解决流体温度从热泵和太阳能PVT面板改变。分析了太阳辐照度，水箱尺寸和水箱中的水流率的影响，对系统性能的PVT管（层流和湍流）的影响。针对PVT和热泵COP的效率（电气和热）进行了特别的重点。结果表明，热泵的最小COP为4.2，显示了所提出的混合系统的高性能。通过PVT面板从3L / min（层流）增加到17个Limin（湍流）增加水流量，将PVIT的总效率（电+热）从61％增加到64.5％。将PVT水箱的尺寸从1 L增加到100 L增加，增加了PVT面板的总效率6.5％。 （c）2019 Elsevier Ltd.保留所有权利。

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