PERFORMANCE OPTIMIZATION AND ENERGY-SAVING POTENTIAL STUDY OF MODULAR THERMO-ACTIVATED WALL

Chen Sarula; Chen Kunyu; Yang Yang; Chen Tianhang; Xu Jieqing; Bao Xuefang

doi:10.19912/j.0254-0096.tynxb.2024-0539

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 514-523. DOI: 10.19912/j.0254-0096.tynxb.2024-0539

PERFORMANCE OPTIMIZATION AND ENERGY-SAVING POTENTIAL STUDY OF MODULAR THERMO-ACTIVATED WALL

Chen Sarula¹, Chen Kunyu¹, Yang Yang², Chen Tianhang¹, Xu Jieqing¹, Bao Xuefang¹

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Abstract

To address the mismatch between the heat injection rate and heat diffusion rate in conventional thermo-activated walls（CTAW） during heat injection, a modular thermo-activated wall （MTAW） with specific internal channels is proposed. The effects of filler cavity size （a∶b） and thermal conductivity of the filler （λ_f） on dynamic thermal behavior, energy consumption, and thermal comfort are investigated based on a validated numerical model. Results indicate that the dynamic thermal behavior of MTAW can be significantly enhanced, with improvement correlating positively with increases in the a∶b and λ_f. Besides, the enhanced heat injection design can ensure effective radial heat transfer from the pipes to the far boundary, resulting in better continuity and stability of the invisible thermal barrier compared to CTAW. Moreover, increasing a∶b and λ_f can positively impact radiant thermal comfort and energy savings. Compared to CTAW, the energy-saving efficiency of MTAW can be enhanced by up 42.3%. The improvement effect becomes more obvious as the spacing of the embedded tubes decreases.

Key words

solar energy / numerical simulation / energy saving / active insulation / efficient utilization of low-grade energy

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Chen Sarula, Chen Kunyu, Yang Yang, Chen Tianhang, Xu Jieqing, Bao Xuefang. PERFORMANCE OPTIMIZATION AND ENERGY-SAVING POTENTIAL STUDY OF MODULAR THERMO-ACTIVATED WALL[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 514-523 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0539

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