RESEARCH ON CONFIGURATION STRATEGIES AND APPLICABILITY OF DISTRICT HEATING PEAK SHAVING SYSTEM BASED ON SEASONAL BOREHOLE THERMAL ENERGY STORAGE

Hou Xiaojun; Liu Xin; Hou Hongzhang; Huang Kailiang; Li Ainong; Huang Xin

doi:10.19912/j.0254-0096.tynxb.2025-0630

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 93-102. DOI: 10.19912/j.0254-0096.tynxb.2025-0630

RESEARCH ON CONFIGURATION STRATEGIES AND APPLICABILITY OF DISTRICT HEATING PEAK SHAVING SYSTEM BASED ON SEASONAL BOREHOLE THERMAL ENERGY STORAGE

Hou Xiaojun¹, Liu Xin¹, Hou Hongzhang², Huang Kailiang¹, Li Ainong¹, Huang Xin¹

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Abstract

To achieve capacity expansion and energy efficiency in industrial waste heat utilization for district heating peak shaving, a novel peak shaving system incorporating seasonal borehole thermal energy storage （BTES） was proposed. The system synergistically combined seasonal BTES technology with conventional peak shaving methods. Outdoor temperature data from typical cities were evaluated to establish accurate heating load models. Peak shaving demand was precisely determined and optimal BTES layout was designed accordingly. An absorption heat pump was integrated to elevate the return water temperature from BTES, thereby increasing its contribution ratio. The optimal system configuration was determined through comprehensive analysis. Economic performance of different scenarios was evaluated using the annual cost method. As the results, the modified system demonstrated remarkable performance under optimal conditions. The BTES contributed 40.4% of the total peak shaving demand. During a typical heating season, the system provides 2.3×10⁴ GJ of peak shaving heat over 1845 operation hours, successfully meeting the 12.4 MW peak demand. The annual cost per unit heat extraction is 177 RMB/GJ, showing excellent economic feasibility. This system provides an efficient, low-carbon solution for district heating peak shaving in severe cold regions, with particular advantages in industrial waste heat recovery applications.

Key words

seasonal thermal energy storage / waste heat utilization / annual cost / regional heating / peak shaving

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Hou Xiaojun, Liu Xin, Hou Hongzhang, Huang Kailiang, Li Ainong, Huang Xin. RESEARCH ON CONFIGURATION STRATEGIES AND APPLICABILITY OF DISTRICT HEATING PEAK SHAVING SYSTEM BASED ON SEASONAL BOREHOLE THERMAL ENERGY STORAGE[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 93-102 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0630

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