Experimental study on heating characteristics of radiant air conditioning system
-
摘要: 为探究辐射空调系统供暖特性，搭建辐射空调系统试验台，进行7 d的系统间歇运行试验，对两级新风机组送风温湿度，空气源热泵主机制热量、能效比，以及系统能耗和能效比进行分析。结果表明，在设定参数下，两级新风机组稳定时送风温湿度分别为27 ℃和35%左右，空气源热泵主机平均制热量为4.5 kW，制热性能系数(COPU)为4.10；辐射空调系统耗电量为1.5 kW·h，系统性能系数(COPS)为3.02。试验结果可为系统的进一步优化和推广提供参考。Abstract: To explore the heating characteristics of a radiation air conditioning system, a radiation air conditioning system test bench was built, a 7-day intermittent operation test was conducted. The temperature and humidity of the air from two-stage fresh air unit, the heat output and efficiency of the air-source heat pump, as well as the energy use and efficiency ratio of the system were analyzed emphatically. The results show that under setting parameters, the stable supply air temperature and humidity of the two-stage fresh air are about 27 ℃ and 35%, respectively. The average heating capacity of the air source heat pump host is 4.5 kW, and the heating coefficient of performance (COPU) is 4.10. The power consumption of the radiation air conditioning system is 1.5 kW·h, and the system coefficient of performance (COPS) is 3.02. The results can provide reference for further optimization and promotion of the system.
-
图 9 热泵主机供回水温度变化
Figure 9. Temperature changes of supply and return water of heat pump host
图 11 热泵主机
$ {{\rm{COP}}}_{{\rm{U}}} $ 变化Figure 11.
$ {{\rm{COP}}}_{{\rm{U}}} $ change of heat pump host
图 14 系统
${{\rm{COP}}}_{{\rm{S}}}$ 变化Figure 14.
${{\rm{COP}}}_{{\rm{S}}}$ changes of system表 1 试验系统设备参数
Table 1. Experimental system equipment parameters
设备名称 设备参数 台数 空气源热泵主机 制热量9.8 kW
供热功率3.1 kW
制冷剂类型R410A1 两级新风机组 总功率0.64 kW
风量300 m3/h
制冷剂类型R410A1 
下载: 导出CSV
表 2 试验仪器及精度
Table 2. Experimental instruments and accuracy
数据类型 测量仪器 测量精度 记录仪器 室外、送风口温
湿度Testo温湿度记录仪 ± 0.4 ℃/ ± 2% Testo温湿度记
录仪测点垂直温度 PT100热电偶温度
传感器± 0.1 ℃ 安捷伦数据采集器 主机供回水温度 温度传感器 ±（0.3+0.005t） ℃ PLC控制采集系统 耗电量 电能表 ± 1% PLC控制采集系统
下载: 导出CSV
-
[1] 陈启, 马一太. 辐射顶板空调系统的优势[J] . 节能技术, 2005(1): 40 − 43. doi: 10.3969/j.issn.1002-6339.2005.01.012 [2] 孔祥雷, 张小松, 路诗奎. 辐射供冷空调结露问题的研究现状及其对策[J] . 建筑热能通风空调, 2008(1): 20− 23. [3] 苏夺, 陆琼文. 辐射空调方式及其发展方向[J] . 制冷空调与电力机械, 2003(5): 26 − 30. [4] 李念平, 张稳, 阿勇嘎, 等. 动态辐射热环境对人体生理与热反应的影响[J] . 湖南大学学报(自然科学版), 2022, 49(9): 203 − 214. [5] 刘昆俐, 李念平, 阿勇嘎, 等. 非均匀环境下不同空调形式对人体热舒适的影响[J] . 科学技术与工程, 2022, 22(21): 9296 − 9305. [6] 曹振, 傅允准. 双冷源新风除湿机与辐射顶板联合制冷运行特性测试研究[J] . 流体机械, 2020, 48(8): 59 − 64, 70. [7] 严天宇, 陈剑波. 夏热冬冷地区辐射空调系统夏季节能运行实验研究[J] . 建筑节能(中英文), 2022, 50(6): 35 − 40. [8] 宗天晴, 傅允准. 金属辐射板与双冷源新风机组联合运行供暖特性实验研究[J] . 流体机械,2022, 50(1): 16 − 21. doi: 10.3969/j.issn.1005-0329.2022.01.003 [9] PEBG P, GONG G, MEI X, et al. Investigation on thermal comfort of air carrying energy radiant air-conditioning system in south-central China[J] . Energy and Buildings, 2019, 182: 51 − 60. doi: 10.1016/j.enbuild.2018.10.020 [10] DU J, CHAN M, PAN D, et al. A numerical study on the effects of design/operating parameters of the radiant panel in a radiation-based task air conditioning system on indoor thermal comfort and energy saving for a sleeping environment[J] . Energy and Buildings, 2017, 151: 250 − 262. doi: 10.1016/j.enbuild.2017.06.052 [11] QIN W Q, HU Y N, LEI J, et al, Comfort design and optimization of direct expansion multi-connected radiant air conditioning based on 3D flow field simulation[J] . Displays , 2021, 69: 102054. [12] HE R, LIAO Y, HUANG J, et al. Radiant air-conditioning with infrared transparent polyethylene aerogel[J] . Materials Today Energy,2021,21(3):100800. [13] LU Y, DONG J, LU H, et al. Stratum-air-distributed radiant-convective room air conditioner for heating[J] . Energy and Buildings,2022,271:112311. doi: 10.1016/j.enbuild.2022.112311 [14] DU K, WU H, HUANG G, et al. Condensation-free radiant cooling with double-skin infrared-transparent membranes[J] . Building and Environment, 2021, 193: 107660. doi: 10.1016/j.buildenv.2021.107660 [15] 金梧凤, 赵宁, 毕晨, 等. 辐射空调过冷度与结露延迟时间动态变化特性研究[J] . 流体机械, 2021, 49(2): 90 − 96, 104. -
下载:
点击查看大图
计量
- 文章访问数: 133
- HTML全文浏览量: 81
- PDF下载量: 25
- 被引次数: 0
