Exergetic investigation and optimization of arc shaped rib roughened solar air heater integrated with fins and baffles

被引：78

作者：

Saravanakumar, P. T. ^{[1
]}

Somasundaram, D. ^{[2
]}

Matheswaran, M. M. ^{[3
]}

机构：

[1] Hindusthan Inst Technol, Dept Automobile Engn, Coimbatore 641032, Tamil Nadu, India

[2] Sri Ramakrishna Inst Technol, Dept Mech Engn, Coimbatore 641010, Tamil Nadu, India

[3] Jansons Inst Technol, Dept Mech Engn, Coimbatore 641659, Tamil Nadu, India

来源：

APPLIED THERMAL ENGINEERING | 2020年 / 175卷

关键词：

Solar air heater; Exergetic efficiency; Genetic algorithm; Arc shaped roughness; Extended surface; PERFORMANCE EVALUATION; FLAT-PLATE; THERMOHYDRAULIC PERFORMANCE; TRANSFER ENHANCEMENT; THERMAL PERFORMANCE; ENERGY; ROUGHNESS; CHANNEL; SINGLE; GROOVE;

D O I：

10.1016/j.applthermaleng.2020.115316

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Present work focuses on exergetic performance and parameter optimization of arc shaped rib roughened solar air heater integrated with fins and baffles. Theoretical analysis based on exergy loss has been considered to study the effect geometrical and operating parameters on exergy efficiency of SAH. Energy and exergy balance equations have been solved by developed code using MATLAB. Variations of exergy destruction and losses with reference to decisive parameters are presented. Further, Genetic algorithm has been invoked to optimize the design and operating parameters of SAH. It is revealed that the maximum exergy efficiency of proposed SAH is 5.2% at optimized conditions. From the plots, it is evident that the maximum exergy is obtained for number of fins of 8, baffle length of 0.2 m, baffle width of 0.015 m and mass flow rate of 0.012 kg/s. Simulations results of present model for proposed SAH has been validated with models available in the literature and found to be in good agreement.

引用

页数：13

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