Dimensionado de intercambiadores de calor horizontales enterrados para instalaciones de energía geotérmica de muy baja entalpíaUn caso práctico

  1. Joaquín del Pino Fernández 1
  2. Miguel Ángel Martínez Bohórquez 1
  3. José Manuel Andújar Márquez 1
  4. Antonio Javier Barragán Piña 1
  5. Arturo Aquino Martín 1
  6. Juan Manuel Enrique Gómez 1
  1. 1 Universidad de Huelva
    info

    Universidad de Huelva

    Huelva, España

    ROR https://ror.org/03a1kt624

Book:
XLIV Jornadas de Automática: libro de actas: Universidad de Zaragoza, Escuela de Ingeniería y Arquitectura, 6, 7 y 8 de septiembre de 2023, Zaragoza
  1. Ramón Costa Castelló (coord.)
  2. Manuel Gil Ortega Linares (coord.)
  3. Óscar Reinoso García (coord.)
  4. Luis Enrique Montano Gella (coord.)
  5. Carlos Vilas Fernández (coord.)
  6. Elisabet Estévez Estévez (coord.)
  7. Eduardo Rocón de Lima (coord.)
  8. David Muñoz de la Peña Sequedo (coord.)
  9. José Manuel Andújar Márquez (coord.)
  10. Luis Payá Castelló (coord.)
  11. Alejandro R. Mosteo (coord.)
  12. Raúl Marín (coord.)
  13. Vanesa Loureiro-Vázquez (coord.)
  14. Pedro Jesús Cabrera Santana (coord.)

Publisher: Servizo de Publicacións ; Universidade da Coruña

ISBN: 9788497498609

Year of publication: 2023

Pages: 138-143

Congress: Jornadas de Automática (44. 2023. Zaragoza)

Type: Conference paper

Abstract

Currently, a fundamental parameter for the correct sizing of very low enthalpy geothermal energy (VLEGE) facilities especially in those with horizontal burial, is to know the right value of the thermal diffusivity (α) of the ground (ratio between the conduction capacity and the thermal capacity, expressed in m2/s) at the depth at which the geothermal heat exchanger is to be buried. Numerous methods are used for its calculation, both theoretical and approximate, as well as more accurate, through costly tests carried out in the ground where the exchanger is to be buried. Rarely does the theoretical calculation come close to reality, causing the designed facility to never work properly. This is especially serious if the facility is located, as is usual, under the building or dwelling, as it does not allow for subsequent improvement actions. This work demonstrates in a practical way, with a real example, how the use of a very low-cost in situ ground temperature measurement system, such as the one designed and presented in the article, provides a useful and accurate tool for the right sizing of this type of facilities. The developed method is compared with the theoretical one, and the error is quantified.