Performance analysis of parallel flow flat plate solar air heater having arc shaped wire roughened absorber plate

被引：30

作者：

Yadav, Kapil Dev ^{[1
]}

Prasad, Radha Krishna ^{[1
]}

机构：

[1] Natl Inst Technol, Mech Engn Dept, Jamshedpur 831014, Jharkhand, India

来源：

RENEWABLE ENERGY FOCUS | 2020年 / 32卷

关键词：

FRICTION FACTOR; THERMOHYDRAULIC PERFORMANCE; ARTIFICIAL ROUGHNESS; TRANSFER ENHANCEMENT; DUCT;

D O I：

10.1016/j.ref.2019.10.002

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：

This paper deals with the theoretical analysis of a parallel flow solar air heater having an absorber plate roughened with arc shaped wires. The absorber plate that forms the upper and lower ducts is roughened on its upper side only. A mathematical model describing the fluid flow and heat transfer characteristics of such a parallel flow roughened absorber plate solar air heater has been developed to study the effects of various operating and systems parameters on thermal performance of the solar air heater. The governing energy equations have been solved by iterative method using computer codes in MATLAB. A comparison between the theoretical results obtained and experimental results available in the literature has been made which shows a good agreement between the results. The thermal efficiency of parallel flow roughened solar air heater has been found nearly 8-10% higher than the smooth parallel flow solar air heater operating under similar conditions. It has been found that based on the thermohydraulic efficiency criteria, parallel flow roughened solar air heater is not beneficial for higher Reynolds number (Re > 29000) as compared to solar air heater having smooth absorber plate and this fact can be considered for designing roughened parallel flow solar air heaters.

引用

页码：23 / 44

页数：22

共 20 条

[1] Experimental investigation on heat-transfer enhancement due to a gap in an inclined continuous rib arrangement in a rectangular duct of solar air heater [J].

Aharwal, K. R. ;

Gandhi, B. K. ;

Saini, J. S. .

RENEWABLE ENERGY, 2008, 33 (04) :585-596

[2] Thermal and thermohydraulic performance of roughened solar air heater having protruded absorber plate [J].

Bhushan, Brij ;

Singh, Ranjit .

SOLAR ENERGY, 2012, 86 (11) :3388-3396

[3]

Duffie J.A., 1980, Solar Engineering of Thermal Process

[4] Experimental analysis of double flow solar air heater with multiple C shape roughness [J].

Gabhane, Mohitkumar G. ;

Kanase-Patil, Amarsingh B. .

SOLAR ENERGY, 2017, 155 :1411-1416

[5]

Gill R.S., 2015, INT J ENG RES TECHNO, V4

[6] Thermohydraulic performance of solar air heaters with roughened absorber plates [J].

Gupta, D ;

Solanki, SC ;

Saini, JS .

SOLAR ENERGY, 1997, 61 (01) :33-42

[7] Performance evaluation of solar air heater having expanded metal mesh as artificial roughness on absorber plate [J].

Gupta, M. K. ;

Kaushik, S. C. .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2009, 48 (05) :1007-1016

[8] Heat transfer and friction factor correlations for a solar air heater duct roughened artificially with multiple v-ribs [J].

Hans, V. S. ;

Saini, R. P. ;

Saini, J. S. .

SOLAR ENERGY, 2010, 84 (06) :898-911

[9] Analytical models of thermal performance of solar air heaters of double-parallel flow and double-pass counter flow [J].

Hernandez, Alejandro L. ;

Quinonez, Jose E. .

RENEWABLE ENERGY, 2013, 55 :380-391

[10] Heat-transfer enhancement in double-pass flat-plate solar air heaters with recycle [J].

Ho, CD ;

Yeh, HM ;

Wang, RC .

ENERGY, 2005, 30 (15) :2796-2817

← 1 2 →