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Energies 2017, 10(11), 1873; https://doi.org/10.3390/en10111873

Seasonal Solar Thermal Energy Sand-Bed Storage in a Region with Extended Freezing Periods: Part I Experimental Investigation

1
Department of Mechanical Engineering, University of Alaska Anchorage, 3211 Providence Drive, ECB 301K, Anchorage, AK 99508, USA
2
Bristol Bay Campus, University of Alaska Fairbanks, P.O. Box 1070, Dillingham, AK 99576, USA
*
Author to whom correspondence should be addressed.
Received: 22 October 2017 / Revised: 5 November 2017 / Accepted: 10 November 2017 / Published: 15 November 2017
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Abstract

We present the first experimental study of sand-bed thermal energy storage conducted in a region with extended freezing period. The study was carried out on a home situated in Palmer, Alaska, 61.6° N, and 149.1° W. The home is equipped with evacuated tube solar thermal collectors that are connected to a seasonal sand-bed solar thermal energy storage system. Fourteen weeks of data was collected from a period of 28 January 2017 through 7 May 2017. Results suggest that seasonal sand-bed solar thermal storage systems are an excellent option for storing heat for climates in regions with long periods of freezing temperatures. The present study shows a proof of concept of a sand-bed seasonal solar thermal storage that needs additional controls for residential heating application. The system could also be used to provide heat for unoccupied spaces such as garages and greenhouses. View Full-Text
Keywords: thermal energy storage; sand-bed; cold region; solar energy thermal energy storage; sand-bed; cold region; solar energy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hailu, G.; Hayes, P.; Masteller, M. Seasonal Solar Thermal Energy Sand-Bed Storage in a Region with Extended Freezing Periods: Part I Experimental Investigation. Energies 2017, 10, 1873.

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