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Thermal and effective efficiency based analysis of discrete V-down rib-roughened solar air heaters
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10.1063/1.3574430
/content/aip/journal/jrse/3/2/10.1063/1.3574430
http://aip.metastore.ingenta.com/content/aip/journal/jrse/3/2/10.1063/1.3574430

Figures

Image of FIG. 1.
FIG. 1.

Discrete V-down rib arrangement.

Image of FIG. 2.
FIG. 2.

Flow chart of mathematical model.

Image of FIG. 3.
FIG. 3.

Thermal efficiency as a function of Reynolds number and relative roughness pitch.

Image of FIG. 4.
FIG. 4.

Thermal efficiency as a function of temperature rise parameter and relative roughness pitch.

Image of FIG. 5.
FIG. 5.

Thermal efficiency as a function of Reynolds number and relative gap position.

Image of FIG. 6.
FIG. 6.

Thermal efficiency as a function of temperature rise parameter and relative gap position.

Image of FIG. 7.
FIG. 7.

Thermal efficiency as a function of Reynolds number and angle of attack.

Image of FIG. 8.
FIG. 8.

Thermal efficiency as a function of temperature rise parameter and angle of attack.

Image of FIG. 9.
FIG. 9.

Thermal efficiency as a function of Reynolds number and relative gap width.

Image of FIG. 10.
FIG. 10.

Thermal efficiency as a function of temperature rise parameter and relative gap width.

Image of FIG. 11.
FIG. 11.

Thermal efficiency as a function of Reynolds number and relative roughness height.

Image of FIG. 12.
FIG. 12.

Thermal efficiency as a function of temperature rise parameter and relative roughness height.

Image of FIG. 13.
FIG. 13.

Effective efficiency as a function of Reynolds number and relative roughness pitch.

Image of FIG. 14.
FIG. 14.

Effective efficiency as a function of temperature rise parameter and relative roughness pitch.

Image of FIG. 15.
FIG. 15.

Effective efficiency as a function of Reynolds number and relative gap position.

Image of FIG. 16.
FIG. 16.

Effective efficiency as a function of temperature rise parameter and relative gap position.

Image of FIG. 17.
FIG. 17.

Effective efficiency as a function of Reynolds number and angle of attack.

Image of FIG. 18.
FIG. 18.

Effective efficiency as a function of temperature rise parameter and angle of attack.

Image of FIG. 19.
FIG. 19.

Effective efficiency as a function of Reynolds number and relative gap width.

Image of FIG. 20.
FIG. 20.

Effective efficiency as a function of temperature rise parameter and relative gap width.

Image of FIG. 21.
FIG. 21.

Effective efficiency as a function of Reynolds number and relative roughness height.

Image of FIG. 22.
FIG. 22.

Effective efficiency as a function of temperature rise parameter and relative roughness height.

Image of FIG. 23.
FIG. 23.

Optimum values of relative roughness pitch on the basis of effective efficiency criterion.

Image of FIG. 24.
FIG. 24.

Optimum values of relative gap position on the basis of effective efficiency criterion.

Image of FIG. 25.
FIG. 25.

Optimum values of angle of attack on the basis of effective efficiency criterion.

Image of FIG. 26.
FIG. 26.

Optimum values of relative gap width on the basis of effective efficiency criterion.

Image of FIG. 27.
FIG. 27.

Optimum values of relative roughness height on the basis of effective efficiency criterion.

Tables

Generic image for table
Table I.

System and operating parameters used in analytical calculations.

Generic image for table
Table II.

Enhancement in thermal efficiency as a function of relative roughness pitch (P/e) at , , , , and .

Generic image for table
Table III.

Enhancement in thermal efficiency as a function of relative gap position (d/w) at , , , , and .

Generic image for table
Table IV.

Enhancement in thermal efficiency as a function of angle of attack at , , , , and .

Generic image for table
Table V.

Enhancement in thermal efficiency as a function of relative gap width (g/e) at , , , , and .

Generic image for table
Table VI.

Enhancement in thermal efficiency as a function of relative roughness height at , , , , and .

Generic image for table
Table VII.

Enhancement in effective efficiency as a function of relative roughness pitch (p/e) at , , , , and .

Generic image for table
Table VIII.

Enhancement in effective efficiency as a function of relative gap position (d/w) at , , , , and .

Generic image for table
Table IX.

Enhancement in effective efficiency as a function of angle of attack at , , , , and .

Generic image for table
Table X.

Enhancement in effective efficiency as a function of relative gap width (g/e) at , , , , and .

Generic image for table
Table XI.

Enhancement in effective efficiency as a function of relative roughness height at , , , , and .

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/content/aip/journal/jrse/3/2/10.1063/1.3574430
2011-04-06
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Thermal and effective efficiency based analysis of discrete V-down rib-roughened solar air heaters
http://aip.metastore.ingenta.com/content/aip/journal/jrse/3/2/10.1063/1.3574430
10.1063/1.3574430
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