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Increase of COP in the thermoelectric refrigeration by the optimisation of heat dissipation.

Author(s) : ASTRAIN D., VIÁN J. G., DOMÍNGUEZ M.

Type of article: Article

Summary

A device for the dissipation of the heat from the hot side of Peltier pellets in thermoelectric refrigeration, based on the principle of a thermosiphon with phase change is presented. The device design was accomplished by analytic calculations on the base of a semi-empirical formulation and simulations with computational fluids dynamics. In the experimental optimisation phase, a prototype of thermosiphon with a thermal resistance of 0.110 K/W has been developed, dissipating the heat of a Peltier pellet with the size of 40 × 40 mm, what is an improvement of 36% in the thermal resistance, with regard to the commercial fin dissipater. With the construction of the two prototypes of thermoelectric domestic refrigerators, one of them with the device developed, and the other with a conventional fin dissipator, it could be experimentally proved that the use of thermosiphon with phase change increases the COP up to 32%.

Details

  • Original title: Increase of COP in the thermoelectric refrigeration by the optimisation of heat dissipation.
  • Record ID : 2004-2263
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 23 - n. 17
  • Publication date: 2003/12

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