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Comparative analysis of different cooling systems for geothermal thermoelectric generators. (Article in Spanish.)

Number: pap. 1134

Author(s) : CATALAN L., ASTRAIN D., ARANGUREN P., et al.

Summary

The present paper presents the experimental development and the computational study of a project that aims to obtain electrical energy by means of thermoelectric generators in Lanzarote Island (Spain), where one of the most important hot dry rock fields in the world (with temperatures of 500°C at only 3 meters deep) is located. In particular, different heat exchangers for the cold side of the thermoelectric modules have been analyzed: fin dissipators assisted by a ventilator, heat exchangers with water as heat carrier and fancoils, and biphasic thermosyphons. The heat exchangers have been experimentally characterized and subsequently used in a prototype that simulates the favorable conditions of the island. As a result, it has been demonstrated that biphasic thermosyphons are the best alternative due to their low thermal resistance and, especially, due to their lack of auxiliary consumption that deteriorates net generation, leading to a 12.5% higher generation than fin dissipators.

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Pages: 7

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Details

  • Original title: Comparative analysis of different cooling systems for geothermal thermoelectric generators. (Article in Spanish.)
  • Record ID : 30024115
  • Languages: Spanish
  • Source: CYTEF 2018. IX Congreso Ibérico y VII Congreso Iberoamericano de Ciencias y Técnicas del Frío, Valencia, España, 19-21 junio 2018.
  • Publication date: 2018/06/19

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