张国强1,2,傅凯能1,2,张帆1,2,许字行1,2,张园园1,2.住宅辐射制冷-独立新风空调系统 负荷比的多目标优化[J].湖南大学学报:自然科学版,2020,(9):158~168
住宅辐射制冷-独立新风空调系统 负荷比的多目标优化
Multi-objective Optimization of Load Ratio of CRCP-DOAS System in Residential Buildings
  
DOI:
中文关键词:  辐射空调  耦合仿真  负荷比  能耗  热舒适
英文关键词:radiant cooling system  co-simulation  load ratio  energy consumption  thermal comfort
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作者单位
张国强1,2,傅凯能1,2,张帆1,2,许字行1,2,张园园1,2 (1. 湖南大学 国家级建筑安全与环境国际联合研究中心湖南 长沙 410082 2. 湖南大学 土木工程学院湖南 长沙 410082) 
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中文摘要:
      为实现辐射制冷-独立新风空调系统负荷比的多目标优化,引入了BES-CFD耦合仿真方法,以长沙市某应用辐射制冷-独立新风空调系统的住宅房间为研究案例,同时研究了不同的送风温差和不同负荷比下的系统能耗及室内热环境,从节能、热舒适和运行安全性的角度,分析了最佳负荷比范围. 结果表明:考虑系统节能性时,不同送风温差的最佳负荷比范围分别为:46%~85%(4 ℃)、16%~85%(6 ℃)、3%~85%(8 ℃),且送风温差较大时更节能. 从热舒适角度分析,最佳负荷比范围分别为:20%~72%(4 ℃)、16%~59%(6 ℃)、3%~50%(8 ℃),较小的送风温差具有更大的负荷比调节区间. 各工况下顶板与地板壁面温度均高于近壁面空气露点温度,无结露风险. 综合考虑节能性、舒适性及安全性的最优负荷比宜取:46%~72%(4 ℃)、16%~59%(6 ℃)、3%~50%(8 ℃).
英文摘要:
      In order to implement the dual-objective optimization of load ratio of the combined ceiling radiant cooling panel and DOAS air-conditioning(CRCP-DOAS) system, BES-CFD co-simulation is introduced. Taking a residential room in Changsha with applications of CRCP-DOAS system as a research case, energy consumption of the system and indoor thermal environment are studied under different load ratio of three supply air temperature difference, and the optimal load ratio range is obtained from the perspective of energy saving, thermal comfort and safety. The results show that when considering the energy saving of the system, the optimal load ratio ranges are 46%~85%, 16%~85%, 3%~85% at the supply air temperature difference of 4 ℃,6 ℃,8 ℃,respectively. And it is more energy efficient when the supply air temperature difference is larger. From the perspective of thermal comfort, the optimal load ratio ranges are:20%~72%(4 ℃),16%~59%(6 ℃),3%~50%(8 ℃),respectively. And the load ratio has a larger adjustment interval when the supply air temperature difference is smaller. Under each load ratio, the surface temperature of ceiling and floor is higher than the air dew-point temperature near the surface, so there is no condensation risk. The optimal load ratio ranges are 46%~72%(4 ℃),16%~59%(6 ℃),3%~50%(8 ℃),respectively,under comprehensive consideration of energy efficiency,thermal comfort and safety.
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