Abstract
To study and analyze the performance characteristics and the effectiveness of the system under practical application scenarios, the present work compares the performance of solar energy phase change material storage wall systems suitable for buildings in hot summer and cold winter regions under different summer working conditions. The experimental facility was installed on light-weight insulation wall and ordinary wall; ventilation conditions of shutting/opening doors and windows, respectively, were set. The experimental facility showed different thermal characteristics when it was installed on insulation wall and on solid wall whether it was vented or not; under vented working condition, the temperature of the external surface of the south-facing wall which attached to the solid wall experimental system was lower, demonstrating that under practical building scenarios the present technology could better reveal its capability of avoiding the overheating issue of the solar heating wall in summer.
Highlights
Nowadays, climate change, environmental protection and energy shortage are global significant issues requiring for prompt solution
Ventilation working condition of shutting doors and windows, and that of opening doors and windows are set, and the following conclusions are reached: (1) Test system installed on insulation wall: vented working conditions impacts little on temperature of the exterior surface of south-facing wall of experimental room without the present
Test system installed on insulation wall: vented working conditions impacts little on temperature of the exterior surface of south-facing wall of experimental room without the present experimental facility and temperature of the exterior surface of south-facing wall of control room, but a small reduction in peak value and delay in occurrence time of the peak of temperature of the exterior surface of south-facing wall of experimental room with the present experimental facility was observed with respect to unvented working condition
Summary
Climate change, environmental protection and energy shortage are global significant issues requiring for prompt solution. Soares et al [7] concluded the combination of solar energy technology and PCM storage technology with envelope structure of the building can effectively reduce room temperature fluctuation and enhance thermal comfort. The above mentioned literature shows the positive effect and profound significance of combining PCM and solar energy technology in buildings on the thermal conditions of the space. To fulfill the heating and cooling/insulation demand during winter and summer seasons that coexists in buildings especially located in regions with hot summers and cold winters, based on the principle of combining solar energy utilization technology and PCM storage technology, the effectiveness of a dual-channel and thermal-insulation-in-the-Middle type Solar PCM storage Wall (MSPCMW) system is analyzed experimentally and discussed. The working principle of dual-channel and thermal-insulation-in-the-middle type solar PCM
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