THE EFFICIENCY ANALYSIS OF A FINNED CROSS-FLOW HEAT RECOVERY UNIT

被引：4

作者：

Kotcioglu, I. ^{[1
]}

Cansiz, A. ^{[2
]}

机构：

[1] Ataturk Univ, Dept Mech Engn, TR-25240 Erzurum, Turkey

[2] Istanbul Tech Univ, Dept Elect Engn, TR-80626 Istanbul, Turkey

来源：

EXPERIMENTAL HEAT TRANSFER | 2015年 / 28卷 / 01期

关键词：

exergy loss; heat recovery; cross-flow; EXCHANGER; PERFORMANCE;

D O I：

10.1080/08916152.2013.803172

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A finned convergent-divergent plate-type cross-flow heat recovery unit is manufactured and tested for efficiency analysis. Temperature and pressure drop experiments are conducted with various working conditions of the boiler, fan, preheater, and reheater of the system. Variation of Nusselt number and friction factor with Reynolds number is analyzed. Variation of effectiveness and exergy loss with number of transfer units is calculated and discussed in terms of extant literature. Experimental results indicate that the most important parameter affecting the heat transfer is winglet geometry and fluid velocity. The efficiency can be improved successfully by controlling these parameters for thermal applications.

引用

页码：9 / 22

页数：14

共 20 条

[1]

Ayhan T., 1998, International Journal of Engineering and Environmental Science, V22, P185

[2] GENERAL CRITERION FOR RATING HEAT-EXCHANGER PERFORMANCE [J].

BEJAN, A .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1978, 21 (05) :655-658

[3]

Bejan A., 1982, J HEAT TRANSFER, V104, P616

[4] Heat transfer enhancement - The encouragement and accommodation of high heat fluxes [J].

Bergles, AE .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1997, 119 (01) :8-19

[5] Heat transfer and exergy loss in a concentric heat exchanger with snail entrance [J].

Durmus, A .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2002, 29 (03) :303-312

[6]

Egrican N., 1989, J ENG MACHINE, V30, P1

[7]

Kline S.J., 1953, MECH ENG, V75, P385

[8]

Kotcioglu I., 2011, J HEAT TRANSF, V133, P1

[9] Transient Turbulent Flow and Heat Transfer Phenomena in Plate-Fin Type Cross-Flow Heat Exchanger [J].

Kotcioglu, Isak ;

Cansiz, Ahmet ;

Caliskan, Sinan ;

Baskaya, Senol .

HEAT TRANSFER ENGINEERING, 2011, 32 (01) :20-32

[10] On the thermodynamics of cogeneration [J].

Lucas, K .

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2000, 39 (9-11) :1039-1046

← 1 2 →