ENERGY FLEXIBILITY FOR COOLING OF LOW-ENERGY HOUSES IN HOT SUMMER AND COLD WINTER REGIONS AND IMPLICATIONS FOR RENEWABLE ENERGY SELF-SUFFICIENCY RATES

Deng Zhang; Liu Xianping; Ai Daifeng; Hao Xiaoli

doi:10.19912/j.0254-0096.tynxb.2023-1829

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 291-300. DOI: 10.19912/j.0254-0096.tynxb.2023-1829

ENERGY FLEXIBILITY FOR COOLING OF LOW-ENERGY HOUSES IN HOT SUMMER AND COLD WINTER REGIONS AND IMPLICATIONS FOR RENEWABLE ENERGY SELF-SUFFICIENCY RATES

Ai Daifeng¹, Hao Xiaoli^1,2, Deng Zhang¹, Liu Xianping¹

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Abstract

Assessing the energy flexibility potential of buildings during the cooling season, by taking an ordinary residential apartment and a low-energy residential apartment in the hot summer and cold winter zone as case studies. Two types of flexible temperature adjustment events are defined, namely, upward and downward adjustment. Then, DesignBuilder is used to compare and analyze the inherent cooling capacity of the building’s thermal mass. The results show that, without affecting human thermal comfort, the additional cooling load in the downward adjustment of the low-energy residential apartment is much lower than that of the ordinary residential apartment, with the optimal period being from 12:00 to 18:00. Through downward adjustment, the self-sufficiency rate of solar energy in the low-energy residential apartment reaches 79.8%, far exceeding that of the ordinary residential apartment at 37.2%. Economic analysis indicates that the low-energy residential apartment yields benefits in upward and downward adjustments, saving electricity costs by 129 yuan and 105 yuan per day.

Key words

energy flexibility / low-energy buildings / hot summer and cold winter region / renewable energy / cold storage / power grid

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Ai Daifeng, Hao Xiaoli, Deng Zhang, Liu Xianping. ENERGY FLEXIBILITY FOR COOLING OF LOW-ENERGY HOUSES IN HOT SUMMER AND COLD WINTER REGIONS AND IMPLICATIONS FOR RENEWABLE ENERGY SELF-SUFFICIENCY RATES[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 291-300 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1829

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