变风量系统新风不平衡性及其对系统节能影响的探讨
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摘要
鉴于变风量系统送风区域温度可控、可变新风比运行以在过渡季节充分利用室外新风等诸多优点,变风量系统越来越多地应用到国内实际工程中。变风量系统的系统新风不平衡性是影响系统运行能耗的重要影响因素之一。以苏州中心6#塔楼变风量系统的设计为例,分别对空调内外区合用AHU系统和空调内外区独立设置AHU系统两种方案进行夏冬设计工况的设计计算。结果表明,较之合用AHU系统,空调内外区独立设置AHU系统的新风不平衡性更好,空调系统制冷量和再热量均有所降低,系统运行能耗更低。
The VAV system has been widely used in China because of its advantages such as fine indoor air quality and thermal comfort. The imbalance of fresh air in VAV system affects system energy consumption heavily. This paper takes the case of Suzhou center 6 # tower as an example,to compare system energy consumption of different schemes of VAV system. The two schemes of VAV system,one is that the inner air conditioning area and the outer air conditioning area using common AHU( air handing unit( s)),and the other one is that the inner air conditioning area and the outer air conditioning area use separate AHU. The energy consumption of two schemes are calculated under summer and winter design conditions. Results show that compared with using common AHU,the VAV system using separate AHU is better in system energy consumption due to its advantage in balance of fresh air.
The VAV system has been widely used in China because of its advantages such as fine indoor air quality and thermal comfort. The imbalance of fresh air in VAV system affects system energy consumption heavily. This paper takes the case of Suzhou center 6 # tower as an example,to compare system energy consumption of different schemes of VAV system. The two schemes of VAV system,one is that the inner air conditioning area and the outer air conditioning area using common AHU( air handing unit( s)),and the other one is that the inner air conditioning area and the outer air conditioning area use separate AHU. The energy consumption of two schemes are calculated under summer and winter design conditions. Results show that compared with using common AHU,the VAV system using separate AHU is better in system energy consumption due to its advantage in balance of fresh air.
引文
[1]叶大法,杨国荣,胡仰耆.上海地区变风量空调系统工程调研与展望[J].暖通空调,2000,30(6):30-33.
[2]叶大法,杨国荣,董涛.国外变风量空调系统设计理念探讨与借鉴[J].暖通空调,2008,38(3):62-67.
[3]叶大法,杨国荣.变风量空调系统设计[M].北京:中国建筑工业出版社,2007.
[4]王瑱,张国强,陈兆平.变风量空调系统控制程序应用研究[J].建筑热能通风空调,2004,23(5):44-48.
[5]付龙海,李蒙.基于PID神经网络解耦控制的变风量空调系统[J].西南交通大学学报,2005,40(1):13-17.
[6]吴明,连之伟.变风量空调系统模拟及能耗研究[J].节能,2003,(8):10-13.
[7]赵凤羽,王凯. VAV空调系统与四管制风机盘管系统的比较[J].洁净与空调技术,2009,(3):5-9.
[8]曾艺,龙惟定.变风量空调系统的新风[J].暖通空调,2001,31(6):35-38.
[9]闫俊海,范晓伟,何大四,等.变风量空调系统新风量的控制问题[J].建筑节能,2007,35(2):44-47.
[2]叶大法,杨国荣,董涛.国外变风量空调系统设计理念探讨与借鉴[J].暖通空调,2008,38(3):62-67.
[3]叶大法,杨国荣.变风量空调系统设计[M].北京:中国建筑工业出版社,2007.
[4]王瑱,张国强,陈兆平.变风量空调系统控制程序应用研究[J].建筑热能通风空调,2004,23(5):44-48.
[5]付龙海,李蒙.基于PID神经网络解耦控制的变风量空调系统[J].西南交通大学学报,2005,40(1):13-17.
[6]吴明,连之伟.变风量空调系统模拟及能耗研究[J].节能,2003,(8):10-13.
[7]赵凤羽,王凯. VAV空调系统与四管制风机盘管系统的比较[J].洁净与空调技术,2009,(3):5-9.
[8]曾艺,龙惟定.变风量空调系统的新风[J].暖通空调,2001,31(6):35-38.
[9]闫俊海,范晓伟,何大四,等.变风量空调系统新风量的控制问题[J].建筑节能,2007,35(2):44-47.