Experimental and simulation studies on a novel gravity based passive tracking system for a linear solar concentrating collector

被引：10
|
作者：
Natarajan, M. [1 ]
Srinivas, T. [1 ]
机构：
[1] VIT Univ, Sch Mech Engn, Dept Thermal & Energy Engn, Res & Green Technol Ctr CO2, Vellore 632014, Tamil Nadu, India
来源：
RENEWABLE ENERGY | 2017年 / 105卷
关键词：
Load; Spring; Solar; Stiffness; Tracking; PERFORMANCE; DESIGN;
D O I：
10.1016/j.renene.2016.12.060
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A novel gravity based passive solar tracking mechanism; suitable to a linear solar concentrating collector has been conceptualized, developed, simulated, analyzed and tested experimentally. Attempt has been made to minimize the tracking load and error by controlling in dripping rate or filling rate of liquid in the gravity system. The identified key influencing design parameters in the proposed mechanism are sprocket wheel radios, spring stiffness and tracking radius. Large sprocket wheel, low stiff spring and small tracking radius minimizes the tracking loads. The recommended sprocket wheel radius and tracking wheel radius are 125 mm and 60 mm respectively. The simulation studies are validated with the experimental results. Practically obtained collector's incidence angle is compared with the minimum required (theoretical) incidence and found a satisfactory match. The improvement in thermal efficiency of the collector with the proposed tracking mechanism has been highlighted by 'comparing the efficiency of intermittent tracking collector. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：312 / 323
页数：12
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