| 摘要: |
| 为研发适用于日光温室简易相变储热装置，本文提出一种基于硬脂酸丁酯相变材料的多管（PVC）阵列储热结构，改造新疆吐鲁番的一个既有日光温室，实验研究改造后的日光温室热环境。结果表明：相同光照时间（冬季光照6 h）条件下，黑表面储热装置的蓄热量比白表面大66.7%；对比三种直径PVC管材硬脂酸丁酯蓄热体，直径75 mm最为适合。与传统日光温室对照，采用多管阵列储热的日光温室的夜间平均温度提高1.2 ℃以上，硬脂酸丁酯的单位实际蓄热量可达163 kJ/kg（包含显热）。本文多管阵列储热结构具有造价低、安全可靠、简单易行等特点，可在日光温室规模化应用。 |
| 关键词: 日光温室 相变蓄热 多管阵列 硬脂酸丁酯 应用 |
| DOI： |
| Received:April 29, 2022Revised:July 29, 2022 |
| 基金项目:周远院士工作站（SZ20211166）专项经费资助。 |
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| Application of a Multi Tube Array Phase Change Thermal Energy Storage Device in Solar Greenhouses |
|
Li Weizhao1,2, Zhang Chong1, Wei Juan1, Yang Luwei1,2, Sheng Wei3, Pan Hongmin4
|
| (1.Technical Institute of Physics and Chemistry, Chinese Academy of Sciences;2.School of Future Technology, University of Chinese Academy of Sciences;3.College of Mechanical and Power Engineering, Henan Polytechnic University;4.Shandong Institute of Commerce and Technology) |
| Abstract: |
| This study proposed a multi-tube (polyvinyl chloride, PVC) array thermal energy storage structure based on butyl stearate phase change material, aiming to develop a simple and low-cost thermal energy storage device for solar greenhouses. The thermal environment of a greenhouse with a multi-tube array thermal energy storage device was studied through a series of experiments. The results indicated that the heat storage capacity of the device with a black surface was 66.7% higher than that with a white surface under similar irradiation conditions. Compared to devices with diameters of 50 mm and 110 mm, the discharging performance was the best when using a 75 mm PVC pipe containing butyl stearate. Moreover, in contrast to traditional solar greenhouses, the nighttime average temperature of the solar greenhouse with the multi-tube array thermal energy storage device was higher by more than 1.2 ℃, and the in-situ thermal energy storage capacity of the unit with butyl stearate reached 163 kJ/kg (including sensible heat). Therefore, multi-tube array thermal energy storage devices, which are economical, safe, and simple, can be widely applied in solar greenhouses. |
| Key words: solar greenhouse phase-change thermal energy storage multi-tube array butyl stearate application |
