Heat pumps and solar energy: A review with some insights in the future
Heat pumps and solar energy: A review with some insights in the future
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DOI：
10.1016/j.ijrefrig.2020.03.031
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发表时间：
2020-08
期刊：
影响因子：
--
通讯作者：
R. Lazzarin
中科院分区：
文献类型：
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作者：
R. Lazzarin
能源需求的很大一部分是由于空间供暖。直接太阳能加热可能会减少对化石燃料的需求。然而，在采暖季节等外界温度和太阳辐射较低的情况下，太阳能集热器的集热效率较差，限制了太阳能集热器在生活热水供暖中的应用。同样，空气源热泵在供暖需求较高时也会受到惩罚。首先分析了太阳能作为热泵冷源对室外空气的贡献，并对两种冷源的不同集成方式进行了评价。随后，地面热源和太阳能部分的耦合似乎是一个更有利的应用，也是因为太阳能热量可以在低或无供暖需求的时期重新给地面充电。与此同时，太阳能部分可能会减少昂贵的钻孔长度。太阳能辅助吸收式热泵实验成功。最近的研究致力于通过PV/T收集器对热泵的太阳能辅助，其提供一部分电力来驱动热泵和太阳能辅助热泵冷源，无论是地面还是外部空气。
A large fraction of the energy demand is due to space heating. Direct solar heating might reduce the need of fossil fuels. However the poor solar collector efficiency when outside temperature and solar radiation are low, as in the heating season, limit most of solar collectors application to domestic hot water heating. Similarly air source heat pumps are penalized just when the heating demand is higher. Then a possible solar contribution to the outside air as a heat pump cold source was first analyzed, evaluating different integration modes of the two sources. Subsequently the coupling of a ground source and a solar section appeared a more favourable application, also because solar heat could recharge the ground in periods of low or no heating demand. At the same time the solar section might reduce the length of the expensive boreholes. Solar assisted absorption heat pumps were successfully experimented. Recently studies were devoted to a solar assistance of heat pumps by PV/T collectors, that offer both a fraction of the electricity to drive the heat pump and a solar assistance to the heat pump cold source, be it the ground or the outside air.