Heating constitutes a significant portion of the total energy consumption over a building's life cycle. This is particularly pronounced in rural areas, where winter heating can account for over 50 % of the total energy demand. Consequently, the adoption of green and energy-efficient heating methods is of paramount importance for energy conservation and emission reduction in rural residential buildings. This study proposes an innovative coupled system that integrates a solar wall with ground-buried pipes. The system leverages both the solar heat collection capability of the solar wall and the relatively stable temperature characteristics of the ground-buried pipes to provide indoor space heating during winter. A three-dimensional numerical model was developed using the finite volume method. Full-day operational simulations were conducted under two typical winter meteorological conditions: sunny and cloudy days. The study evaluates the heating performance of the coupled system, its impact on the indoor thermal environment, and analyzes its energy-saving benefits. Results indicate that the coupled system demonstrates significant heat exchange effectiveness during daytime operation. However, under cloudy conditions, the thermal efficiency decreases by approximately 36 % compared to sunny conditions. During nighttime, the system exhibits favorable thermal stability, capable of achieving an indoor temperature increase of approximately 9 °C. These findings offer valuable insights relevant to the fields of renewable energy utilization, building energy conservation and emission reduction, and clean heating retrofitting initiatives.

中文翻译：

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太阳能墙与地空气耦合换热器系统加热技术的性能模拟

供暖占建筑物生命周期内总能源消耗的很大一部分。这在农村地区尤为明显，冬季供暖占总能源需求的 50% 以上。因此，采用绿色节能的供暖方式对于农村住宅建筑的节能减排至关重要。本研究提出了一种创新的耦合系统，将太阳能墙与地埋管道集成在一起。该系统利用太阳能墙的太阳集热能力和地埋管道相对稳定的温度特性，在冬季提供室内空间供暖。使用有限体积法开发了三维数值模型。全天业务模拟是在两种典型的冬季气象条件下进行的：晴天和多云天。该研究评估了耦合系统的加热性能、其对室内热环境的影响，并分析了其节能效益。结果表明，耦合系统在白天运行时表现出显着的热交换效果。然而，在多云条件下，与阳光明媚的条件相比，热效率降低了约 36%。在夜间，该系统表现出良好的热稳定性，能够实现约 9 °C 的室内温度升高。 这些发现为可再生能源利用、建筑节能减排以及清洁供暖改造计划领域提供了有价值的见解。