Development and operation analysis of a mobile house with solar air heat collecting combined with pebble heat storage for heating

To address the heating demands in specific scenarios and reduce reliance on traditional energy sources, this paper develops a mobile house with solar air heat collecting combined with pebble heat storage for heating. This approach can reduce on-site installation workload and construction costs, enhance operational stability and reliability, lower operating costs, and promote the application of solar energy in specialized fields. Based on the demand characteristics of mobile houses, the solar air heat collecting components and pebble heat storage components are integrated into the building structure, and a heating system configuration plan is formed. Subsequently, an overall system simulation model and an actual testing system are established to explore the advantages and feasibility of the heating system. According to the simulation results, without relying on auxiliary heat sources, the indoor temperature remains below 15 ℃ for a total of 9 hours during the entire heating period, with the lowest temperature being 13.46 ℃. Solar heat collection accounts for 94.52% of the total heating. The pebble heat storage bed exhibits significant heat storage and release capabilities, and increasing its insulation thickness can enhance heating controllability and improve indoor thermal comfort. The mean absolute percentage error between the measured results on a typical day and the simulation results is controlled within 10%. The research indicates that by comprehensively adopting technologies such as passive building energy saving, integration of solar air heat collecting components and pebble heat storage components into the building structure, and optimized heating system configuration in mobile houses, it is possible to meet heating demands in special scenarios while achieving energy-saving and carbon-reducing operation, demonstrating significant application prospects.