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提高室内温度标准对供暖能耗的影响

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为了分析供暖室内温度标准从18 ℃提高到20 ℃对二次网热水供暖系统能耗的影响,根据水力平衡状态和调节方式的不同设计了 6种计算情景,建立了水力平衡与水力失调情况下分别提高供水温度与增加流量时的热水供暖系统总供热量与耗电量的计算模型.通过文献调研统计了用户水力失调度的正态分布特征,对案例系统进行了多工况的能耗分析.结果表明:水力平衡时,提升流量导致耗电量增加219.9%;水力失调时,提升流量的情景总供热量增加率比提高供水温度小1.1%,耗电量增加率大539.9%;情景D*、T*、G*的总供热量分别随水力失调度标准差以斜率0.35、0.38、0.27线性增大.
Impact of increasing indoor temperature standard on heating energy consumption
In order to analyse the impact of increasing the heating indoor temperature standard from 18 to 20 ℃ on the energy consumption of the secondary network hot water heating system,this paper designs six calculation scenarios according to the different hydraulic balance states and adjustment methods,and establishes a calculation model for the total heat supply and electricity consumption of the hot water heating system when the water supply temperature and the flow rate are increased respectively under conditions of hydraulic balance and hydraulic imbalance.Through the literature investigation,the normal distribution characteristics of users'hydraulic imbalance degree are analysed,and the energy consumption of the case system under multiple operating conditions is analysed.The results show that under the hydraulic balance condition,increasing the flow rate leads to a significant increase in electricity consumption by 219.9%.Under the hydraulic imbalance condition,the scenarios with increasing the flow rate result in slightly less increase rate of total heat supply(1.1%)compared to that increasing the supply water temperature,but with a much higher increase in the increase rate of electricity consumption(539.9%).Under the hydraulic imbalance condition,the total heat supply of scenarios D*,T*,G*increases linearly with the standard deviation of hydraulic imbalance degree at a slope of 0.35,0.38,0.27,respectively.

heating systemindoor design temperatureheat supplyelectricity consumptionwater supply temperatureflow ratehydraulic imbalance

丁立、王芃、马旭冉、罗琤

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哈尔滨工业大学,哈尔滨

寒地城乡人居环境科学与技术工业和信息化部重点实验室,哈尔滨

中国城市建设研究院有限公司,北京

供暖系统 室内设计温度 供热量 耗电量 供水温度 流量 水力失调

2024

暖通空调
亚太建设科技信息研究院 中国建筑设计研究院 中国建筑学会暖通空调分会

暖通空调

CSTPCD
影响因子:0.711
ISSN:1002-8501
年,卷(期):2024.54(12)