OPTIMAL DESIGN OF A SOLAR-BIOMASS INTEGRATED ENERGY SYSTEM FOR AGRICULTURAL GREENHOUSES CONSIDERING FLEXIBLE LOADS

Luo Xi; Huang Wenyuan; Han Mingyue; Zheng Yanning

doi:10.19912/j.0254-0096.tynxb.2025-0458

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (7) : 747-759. DOI: 10.19912/j.0254-0096.tynxb.2025-0458

OPTIMAL DESIGN OF A SOLAR-BIOMASS INTEGRATED ENERGY SYSTEM FOR AGRICULTURAL GREENHOUSES CONSIDERING FLEXIBLE LOADS

Luo Xi, Huang Wenyuan, Han Mingyue, Zheng Yanning

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Abstract

A solar-biomass integrated energy system can be used to address the low-carbon energy supply needs of agricultural greenhouse buildings. However, because the energy load patterns of greenhouse buildings are shaped by crop growth requirements and therefore have certain distinctive characteristics, conventional energy system optimization design methods are difficult to apply directly. Taking a Phalaenopsis greenhouse building in the Guanzhong region of Shaanxi Province as an example, this paper analyzes the energy load characteristics of such agricultural greenhouse buildings based on the actual growth requirements of Phalaenopsis, and optimizes the design of a solar-biomass integrated energy system while considering flexible loads.The results indicate：the annual energy consumption patterns of Phalaenopsis greenhouses vary across three distinct phases： dormancy （dominated by rigid loads such as heating and ventilation）, rapid growth, and flowering （featuring flexible loads from irrigation, supplemental lighting, and transport equipment charging, enabling load flexibility）.Flexible load management reduces the annualized system cost by 8.42% and 3.01% under scenarios with and without time-of-use （TOU） electricity pricing, respectively. During typical days representing dormancy, rapid growth, and flowering phases, daily operational costs decrease by 5.89%, 12.93%, and 7.60% when TOU pricing is considered.Photovoltaic module price fluctuations significantly impact the annualized system cost, but flexible load control mitigates this effect to some extent.

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agricultural greenhouse buildings / flexible loads / solar energy / biomass energy / integrated energy system / optimal design

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Luo Xi, Huang Wenyuan, Han Mingyue, Zheng Yanning. OPTIMAL DESIGN OF A SOLAR-BIOMASS INTEGRATED ENERGY SYSTEM FOR AGRICULTURAL GREENHOUSES CONSIDERING FLEXIBLE LOADS[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 747-759 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0458

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