摘要
研究得出冰蓄冷低温送风空调系统较常规空调系统在风管管路阻力及风管截面积的优越性。依据管路阻力计算公式利用VB语言编写风管比摩阻的计算程序,并利用该计算程序对相同工况下的典型的低温送风温度与常规送风温度的比摩阻进行计算,进而得到风管管路阻力,同时计算得出各送风温度下的风管截面积,并进行对比分析。相同计算条件下,冰蓄冷低温送风空调系统的风管沿程阻力是常规送风系统的40%—70%;采用8℃低温送风方式时,其风管截面积较常规空调可减少20%—30%。与常规空调系统相比,采用冰蓄冷低温送风空调系统可明显减小风管的沿程阻力和截面积,大大降低了风机耗能和建筑层高,节省了运行及建材费用。
The research found that cold air distribution system with ice - storage is superior than conventional air - condi- tioning system in duct system resistance and area of air duct. Based on the pipeline resistance formula, the computer program of duct specific frictional resistance was developed utilizing VB language. The specific frictional resistances of the typical cold air supply temperature and the conventional supply temperature were calculated in the same condition using the calculation program. Duct system resistance was obtained and areas of air duct under each different supply temperature were compared and analyzed. Under the same calculation conditions, air duct on - way resistance of cold air distribution system with ice storage was 40% to 70% of that of conventional air - conditioning system. With 8℃ cold air distribution mode, its air duct area compared with con- ventional ones was reduced by 20% to 30%. Comparing to conventional air conditioning system, the cold air distribution system with ice storage could obviously reduce duct frictional resistance and section area, greatly lower the energy consumption and building high - level, and cut down the operating costs and building materials.
出处
《低温与超导》
CAS
CSCD
北大核心
2012年第8期78-81,85,共5页
Cryogenics and Superconductivity
基金
辽宁省建筑节能与室内环境控制重点实验室开放基金资助项目(JN-200912)
建设部科技攻关基金项目(2011-k1-36)
中国博士后基金项目(20100480651)
关键词
冰蓄冷
低温送风
沿程阻力
比摩阻
风管截面积
Ice storage, Low - temperature air supply, On - way resistance, Specific frictional resistance, Area of air duct
