Numerical Investigation of Thermal-hydraulic Behaviour in HVAC Pipe Networks

摘要：

To investigate the hydraulic and thermal behaviour of the HVAC network under part load condition,the models of the components in the network,such as pipes,valves,pumps,and heat exchangers,are established based on a real HVAC system and incorporated so as to represent the overall behaviours of the system.Corresponding FORTRAN programs are developed.The simulation results of the model reach an agreement with experimental data,with relative error not exceeding 10%.As the thermal load decreases,the dynamic behaviours of some vital variables in the network are quantitatively studied,such as supply and return water temperature,air supply temperature of terminal devices,and total heat exchange rate.The results show that dynamic behaviours of the network exhibit obvious differences,as the thermal load uniformly changes or not.

关键词： Simulation Heat transfer Control Pipe network

作者: Shugang Wang Jinpeng Sun

作者单位: School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,China

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 1859-1865

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）