地板辐射供冷系统的优化控制  

Optimal Control for Radiant Floor Cooling System

作　　者：刘艳超[1] 金梧凤[1] 陈华[1] 

机构地区：[1]天津商业大学机械工程学院,天津300134

出　　处：《建筑科学》2012年第8期32-35,82,共5页Building Science

基　　金：韩国国土海洋部尖端城市开发研究项目(09R&DA01)

摘　　要：为了评价各控制方式在住宅建筑空调系统中的适用性,本文建立了4个完全相同的测试小室模拟普通住宅南向卧室空间,测试小室以单位建筑面积冷负荷相同为标准来选定外围护结构的传热系数、外窗大小及太阳辐射热入射率等参数。在此基础上,实验测试了不同控制方式下,地板辐射供冷(RFC)系统分别与分体式空调(PAC)除湿系统和空气处理机组(AHU)除湿系统作用下的室内空气温度、地板表面温度、露点温度等参数的变化规律,并分析了结露的可能性。研究结果表明:"室外温度补偿+室内温度反馈"控制方式可以有效消除RFC系统的时间滞后现象,更有利于该系统进行室内空气温度的控制;PAC除湿系统相对于AHU除湿系统在控制露点温度方面所用时间更短,可以更大限度地利用现有的RFC系统,同时发生结露的可能性更小。本文内容为空调系统控制方式的选择提供了一定的参考,同时对住户的实际运行控制具有一定的指导意义。In order to evaluate the applicability of control modes of air-conditioning systems for residential buildings,a test rig of four small test rooms with identical thermal performance were established to simulate the common southern bedroom of residential buildings, the test rooms had same cooling load per unit area with certain parameter values of heat transfer coefficient of building envelope,window size and incident solar radiation heat rate. Under control modes of radiant floor cooling （RFC） system combined with split air-conditioning （PAC） dehumidification system and air handling unit （AHU） dehumidification system respectively,the variation trends of indoor air temperature, floor surface temperature and dew point temperature were discussed, also the possibility of condensation was analyzed. The results indicated that the outdoor air temperature compensation control plus indoor air temperature feedback control could effectively eliminate the time lag of RFC system, and was more suitable for controlling the indoor air temperature. Besides, compared with AHU dehumidification system,PAC dehumidification system for dew point temperature control could be completed in shorter period,therefore,the existing RFC system could be used at greater extend with smaller possibility of condensation.

关 键 词：地板辐射供冷系统 控制方式 供水温度控制 结露问题 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]