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Evacuated tube solar heat pipe collector model and associated tests
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10.1063/1.3690958
/content/aip/journal/jrse/4/2/10.1063/1.3690958
http://aip.metastore.ingenta.com/content/aip/journal/jrse/4/2/10.1063/1.3690958

Figures

Image of FIG. 1.
FIG. 1.

Heat pipe schematic.

Image of FIG. 2.
FIG. 2.

Evacuated heat pipe collector schematic.

Image of FIG. 3.
FIG. 3.

Thermal resistance model for an evacuated heat pipe collector.

Image of FIG. 4.
FIG. 4.

Schematic diagram of the test set-up.

Image of FIG. 5.
FIG. 5.

Test facility.

Image of FIG. 6.
FIG. 6.

Climate conditions for the two test days (a) August 8 and (b) August 15.

Image of FIG. 7.
FIG. 7.

Collector flow factor.

Image of FIG. 8.
FIG. 8.

Theoretical model and comparison with experimental results for outlet temperature.

Image of FIG. 9.
FIG. 9.

Variation in the working fluid temperature in a collector with 19 heat pipes for different flow rates.

Image of FIG. 10.
FIG. 10.

Variation in the working fluid temperature in a collector with 4 heat pipes for different flow rates.

Image of FIG. 11.
FIG. 11.

Comparison of theoretical and experimental heat gain for a collector with 19 heat pipes.

Image of FIG. 12.
FIG. 12.

Comparison of theoretical and experimental heat gain for a collector with 4 heat pipes.

Image of FIG. 13.
FIG. 13.

Predicted efficiency from the theoretical model vs. efficiency determined from the experimental results for the collector with 19 heat pipes.

Image of FIG. 14.
FIG. 14.

Predicted efficiency from the theoretical model vs. efficiency determined from the experimental results for the collector with 19 heat pipes.

Tables

Generic image for table
Table I.

Specifications of an evacuated collector.

Generic image for table
Table II.

Data table for the collector with 19 heat pipes and a working fluid flow rate of 0.042 kg/s.

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/content/aip/journal/jrse/4/2/10.1063/1.3690958
2012-03-06
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Evacuated tube solar heat pipe collector model and associated tests
http://aip.metastore.ingenta.com/content/aip/journal/jrse/4/2/10.1063/1.3690958
10.1063/1.3690958
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