摘要
采用等价干工况的方法对风机盘管的湿工况进行分析,避开了析湿系数的求解,并先分析了风机盘管的稳定工况运行,采用分布参数法对标准稳态工况进行仿真模拟.分析了风机盘管在外界扰动下的换热过程,采用集中参数法建立了在两个稳态工况之间的换热性能变化的动态模型,通过数值模拟获得了风机盘管在外界扰动下动态响应过程.结果表明:在相同的扰动情况下,进水温度的变化对风机盘管的运行产生的影响大于进风参数的变化.
A heat and mass transfer model between air and water of fan coil unit is introduced and is solved by concept of equivalent dry running condition, which transforms wet running condition to dry running condition to simplify the calculating process by excluding the dehumidifying coeffieient. With a stationary distributed parameter model, the running characteristics under steady condition are simulated. Based on the steady simulation, with a lumped parameter model, the dynamic process of performance variety between one steady state to the next is simutated. With the same disturbance, the temperature of inlet water affects the performance of fancoil more strongly than temperature of inlet air.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第1期153-156,共4页
Journal of Harbin Institute of Technology
基金
国家"973"重点基础研究发展规划资助项目(G2000026309)
上海交通大学"985"重点建设资助项目
关键词
风机盘管
扰动
数值模拟
动态模型
fan coil unit
disturbance
numerical simulation
dynamic model
