李莉
LI Li(Jimei University

• 1:集美大学 福建厦门361021

摘要(Abstract)：

介绍了空调水管路的计算方法和设计原理,通过水力计算实例,对比了低温大温差空调冷冻水系统与常规空调冷冻水系统在管径尺寸、管路阻力、管路初投资及电耗方面的差异。研究结果表明:当冷冻水供回水温差从5℃增大到12.5℃时,可节省冷冻水管路系统投资约20%,降低水泵电耗达55~66%。因此,对一定负荷的空调系统而言,采用冷水低温大温差空调代替常规空调可节省冷水管路系统的投资和能耗。
The calculation methods and design principles of chilled water pipelines are analyzed.Based on a hydraulic calculation example,the dimension,pipeline resistance,pipeline system energy consumption and capital cost of large temperature difference air conditioning systems are calculated and compared with conventional air conditioning systems.The results indicate that when the temperature difference between chilled supply-water and return-water increases from 5 ℃(△t=5℃) to 12.5 ℃(△t=12.5℃),the capital cost of a chilled-water pipeline system with large temperature difference is about 20% less,and the power consumption of the pump about 55～66% lower than for a conventional air conditioning system.Therefore,for air-conditioning systems with a certain cold load,adopting low temperature chilled water systems with large temperature differences instead of conventional air conditioning systems there will be savings in energy consumption and investment costs of the piping system.

关键词(KeyWords)： 能耗;冷冻水系统;管路设计;大温差
power consumption;chilled water systems;pipeline design;large temperature difference

Abstract:

Keywords:

基金项目(Foundation): 福建省科技厅重点项目(2003H033)

作者(Author): 李莉
LI Li(Jimei University

参考文献(References)：

• [1]李莉,朱彩霞,张建一.与冰蓄冷相结合的低温送风系统[J].低温工程,2004,(5):59-62.
• [2]Kirkpatrick A T,Elleson J S.Cold air distributionsystem design guide[M].Atlanta:ASHRAE inc.1996.
• [3]殷平.空调大温差研究(5):空调冷水大温差系统设计方法[J].暖通空调,2001,31(2):64-67.
• [4]殷平.空调大温差研究(4):空调冷水大温差系统经济性分析[J].暖通空调,2001,31(1):68-72.
• [5]付祥钊.流体输配管网[M].北京:中国建筑工业出版社,2001.
• [6]马最良,姚杨.民用建筑空调设计[M].北京:化学工业出版社.2003.
• [7]莫乃榕.工程流体力学[M].武汉:华中科技大学出版社,2002.
• [8]龚光彩.流体输配管网[M].北京:中国机械工业出版社,2005.
• [9]周邦宁.中央空调设备选型手册[M].北京:中国建筑工业出版社,1999.