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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Design and experimental investigation of a phase change energy storage airtype solar heat pump heating system
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Design and experimental investigation of a phase change energy storage airtype solar heat pump heating system

机译：相变能蓄能蓄能储存空中热泵加热系统的设计与实验研究

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摘要

To improve solar energy utilization and the stability of solar heating systems, an energy storage air-type solar collector was designed and developed. Phase change material was placed in the middle of the solar vacuum tube to reduce the impact of solar radiation fluctuations on indoor heating. Based on this, a new type of solar heat pump heating system was established, with three heating modes: solar heating, solar-assisted heat pump heating, and heat pump heating. The control system was designed to automatically switch the operational mode when environmental conditions change. The heating performance, exergy efficiency, and economic benefit of the system in engineering application were studied and analyzed for different weather conditions. The results of the investigation show that at an average solar radiation intensity of 613.4 Wm(-2 )and average ambient temperature of 12.5 degrees C, the system can provide continuous indoor heating for 9.5 h in the solar heating mode, with the solar collector operating at an average thermal efficiency of 44.8%. The energy stored in the phase change material energy storage core is still capable of running the heat pump efficiently for 3 h after solar heating ends. The exergy efficiency of the heat pump is significantly improved by an average value of 12.1%. Economic analysis shows that the system can adequately meet building heating demands, with an average coefficient of performance of 3.6. Compared with the electric boiler heating system, the proposed system can reduce annual operating costs by 72.8%, with a payback period of approximately five years in Northern China.
机译：为了提高太阳能利用和太阳能加热系统的稳定性，设计和开发了一种能量存储空气型太阳能收集器。将相变材料放置在太阳能真空管的中间，以减少太阳辐射波动对室内加热的影响。基于此，建立了一种新型的太阳能热泵加热系统，具有三种加热模式：太阳能加热，太阳能辅助热泵加热和热泵加热。控制系统旨在在环境条件发生变化时自动切换操作模式。研究了工程应用中系统的加热性能，高效率和经济效益，并分析了不同的天气条件。调查结果表明，平均太阳辐射强度为613.4 Wm（-2）和平均环境温度为12.5℃，系统可以在太阳能收集器运行中提供连续室内加热9.5小时，具有太阳能收集器平均热效率为44.8％。存储在相变材料储能芯中的能量仍然能够在太阳能加热端部结束后有效地​​运行热泵3小时。热泵的高效效率明显提高了12.1％的平均值。经济分析表明，该系统可以充分满足建筑物加热需求，平均性能系数为3.6。与电锅炉加热系统相比，该系统可以将年度运营成本降低72.8％，在中国北方约有五年的投资回收期。

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