高校图书馆建筑在夜间通风模式下空调能耗及室内热舒适性研究
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摘要
为了研究夜间机械通风对高校图书管建筑空调系统能耗和室内热舒适性的影响,选取湖南省某高校图书馆为研究对象。用EnergyPlus模拟了不同夜间通风工况时的能耗、墙体内壁面温度和PMV,并进行了对比分析。结果显示,通风量在5~7n/h时空调系统具有较好的节能效果,5月、6月、9月和10月存在不同的最佳夜间通风工况,最佳夜间通风工况时,供冷季节空调系统可减少耗电量2. 71kW·h/(m~2·a),节能率为10. 0%; 5月、6月、9月和10月墙体内表面月平均温度可分别降低1. 6℃、0. 6℃、0. 9℃和1. 7℃,并且室内热舒适性均有不同程度改善。
To investigate the effectiveness of night mechanical ventilation on air-conditioning energy consumption and indoor thermal comfort of college library buildings,a university library in Hunan Province was selected to study. The energy consumption,inner surface temperature of wall and PMV( Predicted Mean Vote) at different night ventilation conditions were simulated by EnergyPlus. The results show that air conditioning system can achieve distinct energy-saving effect when ventilation volume is 5~7 n·h~(-1),and there were different optimum night ventilation conditions in May,June,September and October. Under the optimum night ventilation condition,the air conditioning system can reduce the power consumption by 2. 71 kW·h/( m~2·a) during the cooling season,and the energy saving rate is 10%; In May,June,September and October,the average monthly inner surface temperature of the wall can be reduced by 1. 6 ℃ 、0. 6 ℃ 、0. 9 ℃ and 1. 7 ℃ respectively,and indoor thermal comfort is improved to some extent.
To investigate the effectiveness of night mechanical ventilation on air-conditioning energy consumption and indoor thermal comfort of college library buildings,a university library in Hunan Province was selected to study. The energy consumption,inner surface temperature of wall and PMV( Predicted Mean Vote) at different night ventilation conditions were simulated by EnergyPlus. The results show that air conditioning system can achieve distinct energy-saving effect when ventilation volume is 5~7 n·h~(-1),and there were different optimum night ventilation conditions in May,June,September and October. Under the optimum night ventilation condition,the air conditioning system can reduce the power consumption by 2. 71 kW·h/( m~2·a) during the cooling season,and the energy saving rate is 10%; In May,June,September and October,the average monthly inner surface temperature of the wall can be reduced by 1. 6 ℃ 、0. 6 ℃ 、0. 9 ℃ and 1. 7 ℃ respectively,and indoor thermal comfort is improved to some extent.
引文
[1]ALIZADEH M,SADRAMELI S M. Development of free cooling based ventilation technology for buildings:Thermal energy storage(TES)unit,performance enhancement techniques and design considerations-A review[J]. Renew able and Sustainable Energy Review s,2016,58(1):619-645.
[2]Peter Engelmann,Doreen Kalz,Graziano Salvalai. Cooling concepts for non-residential buildings:A comparison of cooling concepts in different climate zones[J]. Energy and Buildings,2014,82(8):447-456.
[3]乐小龙,梁彩华,张小松.基于EnergyPlus对南京地区应用夜间通风预测[J].建筑热能通风空调,2014,33(2):6-9.
[4]ARTMANN N,MANZ H,HEISELBERG P. Climate potential for passive cooling of buildings by night-time ventilation in Europe[J]. Applied Energy,2007(84):187-201.
[5]亓晓琳,杨柳,刘加平.北方地区办公建筑夜间通风适用性分析[J].太阳能学报,2011,32(5):669-673.
[6]冯国会,韩淑伊,刘馨,等.相变墙房间夏季夜间通风效果实验[J].沈阳建筑大学学报:自然科学版,2013,29(4):693-697.
[7]张东凯,郑洁,宋庆龙.重庆某高校学生公寓夜间通风实验研究[J].暖通空调,2015,45(11):91-95.
[8]亓晓琳,杨柳.夜间通风建筑传热模型研究及实测验证[J].太阳能学报,2015,36(3):636-640.
[9]李楠,杨柳,朱小波.西安地区办公建筑夜间通风降温实验研究[J].暖通空调,2015,45(4):106-110.
[10]陈海旎,刘猛.夜间通风在不同气候条件下的适用性[J].土木建筑与环境工程,2016,38(S2):109-113.
[11]王碧玲,邹瑜,宋业辉,等.基于数学模型的冷水机组节能量计算方法研究[J].建筑科学,2013,29(4):79-84.
[12]Hydemam M,Gillespie K L. Tools and techniques to calibrate electric chiller component models[J]. ASHRAE Transactions,2002,108(1):733-741.
[13]凌飞.基于传热模型的中央空调系统综合能效优化[D].杭州:浙江大学,2012.
[14]黄建华,张慧.人与热环境[M].北京:科学出版社,2011.
[2]Peter Engelmann,Doreen Kalz,Graziano Salvalai. Cooling concepts for non-residential buildings:A comparison of cooling concepts in different climate zones[J]. Energy and Buildings,2014,82(8):447-456.
[3]乐小龙,梁彩华,张小松.基于EnergyPlus对南京地区应用夜间通风预测[J].建筑热能通风空调,2014,33(2):6-9.
[4]ARTMANN N,MANZ H,HEISELBERG P. Climate potential for passive cooling of buildings by night-time ventilation in Europe[J]. Applied Energy,2007(84):187-201.
[5]亓晓琳,杨柳,刘加平.北方地区办公建筑夜间通风适用性分析[J].太阳能学报,2011,32(5):669-673.
[6]冯国会,韩淑伊,刘馨,等.相变墙房间夏季夜间通风效果实验[J].沈阳建筑大学学报:自然科学版,2013,29(4):693-697.
[7]张东凯,郑洁,宋庆龙.重庆某高校学生公寓夜间通风实验研究[J].暖通空调,2015,45(11):91-95.
[8]亓晓琳,杨柳.夜间通风建筑传热模型研究及实测验证[J].太阳能学报,2015,36(3):636-640.
[9]李楠,杨柳,朱小波.西安地区办公建筑夜间通风降温实验研究[J].暖通空调,2015,45(4):106-110.
[10]陈海旎,刘猛.夜间通风在不同气候条件下的适用性[J].土木建筑与环境工程,2016,38(S2):109-113.
[11]王碧玲,邹瑜,宋业辉,等.基于数学模型的冷水机组节能量计算方法研究[J].建筑科学,2013,29(4):79-84.
[12]Hydemam M,Gillespie K L. Tools and techniques to calibrate electric chiller component models[J]. ASHRAE Transactions,2002,108(1):733-741.
[13]凌飞.基于传热模型的中央空调系统综合能效优化[D].杭州:浙江大学,2012.
[14]黄建华,张慧.人与热环境[M].北京:科学出版社,2011.