Research on temperature control and influence of the vacuum tubes with inserted tubes solar heater

2017 International Conference on New Energy and Future Energy System

Xiao, L.X.^1 ; He, Y.T.^1 ; Hua, J.Q.^1

Department of Physics and Electronic Science, Chuxiong Normal University, Chuxiong, Yunnan Province

675000, China^1

关键词: Heat characteristics;    Heat transfer characteristics;    Hot water storage;    Structural characteristics;    Thermal characteristics;    Thermal efficiency;    Tubes solar collectors;    Working temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012080/pdf
DOI  :  10.1088/1755-1315/93/1/012080

来源: IOP

【 摘 要 】

A novel snake-shape vacuum tube with inserted tubes solar collector is designed in this paper, the heat transfer characteristics of the collector are analyzed according to its structural characteristics, and the influence of different working temperature on thermal characteristics of the collector is studied. The solar water heater prototype consisting of 14 vacuum tubes with inserted tubes is prepared, and the hot water storage control subsystem is designed by hysteresis comparison algorithm. The heat characteristic of the prototype was experimentally studied under hot water output temperature of 40-45°C, 50-55°C and 60-65°C. The daily thermal efficiency was 64%, 50% and 46%, respectively. The experimental results are basically consistent with the theoretical analysis.