Sustainability and Cost Effectiveness Analysis of Staggered Jet Impingement on Solar Thermal Collector

被引：8

作者：

Maithani, Rajesh ^{[1
]}

Kumar, Anil ^{[1
]}

Kumar, Manoj ^{[2
]}

Sharma, Sachin ^{[1
]}

机构：

[1] Univ Petr & Energy Studied, Dept Mech Engn, Dehra Dun 248007, Uttarakhand, India

[2] DIT Univ, Dept Mech Engn, Dehra Dun 248009, Uttarakhand, India

来源：

ENERGIES | 2022年 / 15卷 / 19期

关键词：

jet impingement; protrusion roughness; sustainability index; waste heat recovery; ARC PROTRUSION RIBS; HEAT-TRANSFER; AIR HEATER; PERFORMANCE; EXERGY; FLOW; OPTIMIZATION; PARAMETERS; OBSTACLE; SURFACE;

D O I：

10.3390/en15197345

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The sustainability index, waste energy ratio and improvement potential of a staggered air jet impingement on the staggered spherical protrusions of a roughened absorber plate were derived for the present study to evaluate exergy losses and irreversibility in the system. The experimental analysis was carried out for selected parameters: relative streamwise pitch, relative spanwise pitch and relative jet diameter to hydraulic diameter ratio. The flow Reynolds number ranged from 4000-18,000. The augmentation in Nusselt number and friction factor compared to a smooth surface was 4.9 and 12.4 times, respectively. The statistical correlation developed determined the maximum thermohydraulic performance parameter and exergetic efficiency be 3.02 and 3.87%, respectively. The magnitude of the sustainability index, waste energy ratio and improvement potential was found to be 1.0347, 0.962 and 10.84, respectively, for the entire range of tested parameters. A cost analysis was also performed to evaluate the cost-effectiveness of the solar thermal system with and without turbulent promoters.

引用

页数：19

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