该文结合新疆地区昼夜大温差气候特性,在乌鲁木齐市搭建一套小型太阳能集热——天空辐射冷却两用系统,通过对比PE防风膜层数和测试不同流速工况下的系统运行结果来探究两用装置的集热/冷却潜力。试验结果表明：系统在日间集热模式下的最大进出口温升为6.40 ℃,最大瞬时集热功率为721.88 W/m2;夜间冷却模式下最大进出口温降为0.94 ℃,出口温度相对环境温降可达1.43 ℃,最大瞬时冷却功率为50.89 W/m2,这为其在实际中的工业集热应用和本地区的温湿度独立控制空调系统高温冷冻水制备提供可能。
Abstract
Combining with the climate characteristics of large temperature difference between day and night in Xinjiang region, this paper sets up a set of small solar heat collection - sky radiation cooling dual-purpose system in Urumqi. By comparing the number of PE wind cover film layers and testing the system operating results under different flow rates, the heat collection/cooling potential of dual-purpose device is explored. The test results show that the maximum temperature difference between inlet and outlet of the system is 6.40 ℃ and the maximum instantaneous heat collection power is 721.88 W/m2 under the daytime heat collection mode. In the night cooling mode, the maximum inlet and outlet temperature difference is 0.94 ℃, the outlet temperature is 1.43 ℃ lower than the ambient temperature, and the maximum instantaneous cooling power is 50.89 W/m2, which provides the possibility for its practical industrial heat collection application and the preparation of high temperature chilled water in the local temperature and humidity independent control air conditioning system.
关键词
辐射冷却 /
太阳能集热 /
被动冷却 /
太阳辐射 /
大气窗口
Key words
radiative cooling /
solar heat collection /
passive cooling /
solar radiation /
atmospheric window
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 葛新石, 孙孝兰. 辐射致冷及辐射体的光谱选择性对致冷效果的影响[J]. 太阳能学报, 1982, 3(2): 128-136.
GE X S,SUN X L.Radiation cooling and the effect of spectral selective characteristics of the radiator on cooling power[J]. Acta energiae solaris sinica, 1982, 3(2): 128-136.
[2] VALL S, MEDRANO M, SOLÉ C, et al.Combined radiative cooling and solar thermal collection: experimental proof of concept[J]. Energies, 2020, 13(4): 893.
[3] 尹宝泉, 王一平, 朱丽, 等. 基于光伏辐射板的多功能建筑能源系统性能分析[J]. 四川建筑科学研究, 2014, 40(1): 327-330.
YIN B Q, WANG Y P, ZHU L, et al.Performance analysis of multi-functional building energy system based on photovoltaic radiant panel[J]. Sichuan building science research, 2014, 40(1): 327-330.
[4] CHEN Z, ZHU L X, LI W, et al.Simultaneously and synergistically harvest energy from the Sun and outer space[J]. Joule, 2019, 3(1): 101-110.
[5] 陈诺, 赵斌, 敖显泽, 等. 一种基于PDMS材料的太阳能集热-辐射制冷光谱选择性表面的研究[J]. 太阳能学报, 2021, 42(12): 80-85.
CHEN N, ZHAO B, AO X Z, et al.Study of a PDMS material based spectrally selective surface for photothermal and radiative cooling[J]. Acta energiae solaris sinica, 2021, 42(12): 80-85
[6] 敖显泽. 基于二氧化钒的光谱自适应光热-天空辐射制冷综合利用研究[D]. 合肥: 中国科学技术大学, 2021.
AO X Z.Study on integrated utilization of spectrally self-adaptive photo-thermal and radiative sky cooling based on vanadium dioxide[D]. Hefei: University of Science and Technology of China, 2021
[7] 赵斌, 胡名科, 敖显泽, 等. 太阳能光伏发电-辐射制冷建筑一体化复合装置的性能分析[J]. 太阳能学报, 2019, 40(5): 1267-1275.
ZHAO B, HU M K, AO X Z, et al.Performance analysis of building integrated composite apparatus for both solar photovoltaic and radiative cooling[J]. Acta energiae solaris sinica, 2019, 40(5): 1267-1275.
[8] 张涛, 刘晓华, 江亿. 温湿度独立控制空调系统设计运行参数分析[J]. 建筑科学, 2012, 28(S2): 113-117.
ZHANG T, LIU X H, JIANG Y.Analysis of design and operation parameters of air conditioning system with independent temperature and humidity control[J]. Building science, 2012, 28(S2): 113-117.
[9] ZHANG Y B, TAN X Y, QI G G, et al.Effective radiative cooling with ZrO2/PDMS reflective coating[J]. Solar energy materials and solar cells, 2021, 229: 111129.
[10] LIU J W, ZHANG J, ZHANG D B, et al.Theoretical and experimental research towards the actual application of sub-ambient radiative cooling[J]. Solar energy materials and solar cells, 2021, 220: 110826.
基金
2022年新疆维吾尔自治区自然科学基金（2022D01C413）
PDF(2045 KB)
