干式风机盘管与辐射顶板的能效分析及优化  

Analysis and optimization of the energy efficiency of dry fan-coil unit and radiant ceiling

作　　者：嵇潇烽 吴玲娜 张光玉[1] JI Xiaofeng;WU Lingna;ZHANG Guangyu(School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,China;Hangzhou Architectural&Civil Engineering Design Institute Co.,Ltd,Hangzhou 310018,China)

机构地区：[1]浙江理工大学建筑工程学院,杭州310018 [2]杭州市城建设计研究院有限公司,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2022年第3期458-465,共8页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：浙江省公益技术项目(LGG19E080003)。

摘　　要：为探索显热末端优化方案,便于工程中合理选用干式风机盘管和辐射顶板,通过理论计算对比分析了目前市售干式风机盘管、辐射顶板两类显热末端的单位冷量功耗等性能参数,结果表明:干式风机盘管空间占用较小、供冷量大,风机功耗是其自身功耗的主要部分;辐射顶板单位冷量功耗远低于干式风机盘管,能效较高;相同供/回水平均温度下,增大供/回水温差、减小水流量可降低辐射顶板单位冷量功耗。在此基础上提出了串联组合的优化和改进方案并进行了分析,结果表明:先辐射顶板后干式风机盘管的串联组合较相近冷量的干式风机盘管可降低单位冷量功耗33.60%~49.84%;先干式风机盘管后辐射顶板的串联组合可进一步降低单位冷量功耗18.03%~25.82%,供冷量提高19.58%~32.96%。该研究可为实际工程中合理选择显热末端提供参考。In order to find an optimization plan for sensible heat terminal, and facilitate the reasonable choice of dry fan-coil unit and radiant ceiling in engineering, the specifications of two types of commercially available sensible heat terminals, i.e., dry fan-coil unit and radiant ceiling, for example, power consumption per kilowatt cooling supply, are compared and analyzed through theoretical calculation. The results show that the dry fan-coil unit has greater cooling capacity and takes up less space, the fan contributes to the major part of power consumption of dry fan-coil units, the power consumption per kilowatt cooling supply of radiant ceiling is far less than that of dry fan-coil units, and the energy efficiency is high. The power consumption per kilowatt cooling supply of radiant ceiling can be diminished by increasing the temperature difference between supply/return water and reducing the water flow rate at the same average temperature of supply/return water. On this basis, an optimization and improvement plan of serial combination was proposed and analyzed. Furthermore, the serial combination of first radiant ceiling and then dry fan-coil unit can reduce the power consumption per kilowatt cooling supply by 33.60%~49.84% than dry fan-coil units with similar cooling capacity. The results indicate that the serial combination of radiant ceiling first and dry fan-coil unit second can reduce the power consumption per kilowatt cooling supply by 18.03%~25.82% and increase the cooling capacity by 19.58%~32.96%. This study can provide a reference for the reasonable choice of sensible heat terminals in practical engineering.

关 键 词：显热末端 干式风机盘管 辐射顶板 能效 串联组合 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]