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Experimental and Computational Model for a Neonatal Incubator with Thermoelectric Conditioning System

Author

Listed:
  • Alejandro Rincón Casado

    (Department of Mechanics and Industrial Design, College of Engineering, University of Cadiz, 11510 Puerto Real, Spain)

  • Mauricio Larrodé-Díaz

    (Department of Mechanics and Industrial Design, College of Engineering, University of Cadiz, 11510 Puerto Real, Spain)

  • Francisco Fernandez Zacarias

    (Department of Mechanics and Industrial Design, College of Engineering, University of Cadiz, 11510 Puerto Real, Spain)

  • Ricardo Hernández Molina

    (Thermal Engines and Machines Department, College of Engineering, University of Cadiz, 11510 Puerto Real, Spain)

Abstract

This work describes the design, construction and testing of a thermo-electric conditioning device installed in a neonatal incubator with the aim of improving the precision in the regulation of the interior air temperature, reducing noise and interior vibration, and improving the life of the neonate. A simplified one-dimensional thermal model has been developed, made up of resistances and thermal capacities that simulate the thermal behaviour of all the elements of the system from end to end. All the equations of the model are obtained in a nodal way, allowing the mathematical relationship between the input and output to be known. This model makes it possible to improve temperature control, avoiding the deviations that occur in the traditional model controlled by sensors at both ends. The computational model allows to predict the variation of temperatures in transient and permanent regime. This model allows the design and sizing of the thermoelectric system for different outdoor environmental conditions and the selection of the number of Peltier modules needed to satisfy the heating demand of other incubators with different geometry and capacity. The results of the computational model show good agreement with the experimental tests, despite being a simplified 1D nodal model. The results obtained show a coefficient of operation (COP) of 1.38, achieving higher performance than the current traditional electrical resistance system (COP = 1). In addition, a CFD study has been carried out to check the air patterns, to see the temperature uniformity and to estimate the number of air changes per hour (HVAC) inside the incubator.

Suggested Citation

  • Alejandro Rincón Casado & Mauricio Larrodé-Díaz & Francisco Fernandez Zacarias & Ricardo Hernández Molina, 2021. "Experimental and Computational Model for a Neonatal Incubator with Thermoelectric Conditioning System," Energies, MDPI, vol. 14(17), pages 1-16, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5278-:d:621996
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    References listed on IDEAS

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    1. Enescu, Diana & Virjoghe, Elena Otilia, 2014. "A review on thermoelectric cooling parameters and performance," Renewable and Sustainable Energy Reviews, Elsevier, vol. 38(C), pages 903-916.
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