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Non-Intrusive Measurements to Incorporate the Air Renovations in Dynamic Models Assessing the In-Situ Thermal Performance of Buildings

Author

Listed:
  • María José Jiménez

    (Energy Efficiency in Buildings R&D Unit, CIEMAT, 28040 Madrid, Spain)

  • José Alberto Díaz

    (Energy Efficiency in Buildings R&D Unit, CIEMAT, 28040 Madrid, Spain)

  • Antonio Javier Alonso

    (CIESOL Research Center on Solar Energy, Joint Center University of Almería-CIEMAT, 04120 Almería, Spain)

  • Sergio Castaño

    (Energy Efficiency in Buildings R&D Unit, CIEMAT, 28040 Madrid, Spain)

  • Manuel Pérez

    (CIESOL Research Center on Solar Energy, Joint Center University of Almería-CIEMAT, 04120 Almería, Spain)

Abstract

This paper reports the analysis of the feasibility to characterise the air leakage and the mechanical ventilation avoiding the intrusiveness of the traditional measurement techniques of the corresponding indicators in buildings. The viability of obtaining the air renovation rate itself from measurements of the concentration of the metabolic CO 2 , and the possibilities to express this rate as function of other climatic variables, are studied. N 2 O tracer gas measurements have been taken as reference. A Test Cell and two full size buildings, with and without mechanical ventilation and with different levels of air leakage, are considered as case studies. One-month test campaigns have been used for the reference N 2 O tracer gas experiments. Longer periods are available for the analysis based on CO 2 concentration. When the mechanical ventilation is not active, the results indicate significant correlation between the air renovation rate and the wind speed. The agreement between the N 2 O reference values and the evolution of the metabolic CO 2 is larger for larger initial values of the CO 2 concentration. When the mechanical ventilation is active, relevant variations have been observed among the N 2 O reference values along the test campaigns, without evidencing any correlation with the considered boundary variables.

Suggested Citation

  • María José Jiménez & José Alberto Díaz & Antonio Javier Alonso & Sergio Castaño & Manuel Pérez, 2020. "Non-Intrusive Measurements to Incorporate the Air Renovations in Dynamic Models Assessing the In-Situ Thermal Performance of Buildings," Energies, MDPI, vol. 14(1), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:14:y:2020:i:1:p:37-:d:467297
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    References listed on IDEAS

    as
    1. Yessenia Olazo-Gómez & Héctor Herrada & Sergio Castaño & Jesús Arce & Jesús P. Xamán & María José Jiménez, 2020. "Data-Based RC Dynamic Modelling to Assessing the In-Situ Thermal Performance of Buildings. Analysis of Several Key Aspects in a Simplified Reference Case toward the Application at On-Board Monitoring ," Energies, MDPI, vol. 13(18), pages 1-30, September.
    2. Tian, Wei & Heo, Yeonsook & de Wilde, Pieter & Li, Zhanyong & Yan, Da & Park, Cheol Soo & Feng, Xiaohang & Augenbroe, Godfried, 2018. "A review of uncertainty analysis in building energy assessment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 93(C), pages 285-301.
    3. Heidi Paola Díaz-Hernández & Pablo René Torres-Hernández & Karla María Aguilar-Castro & Edgar Vicente Macias-Melo & María José Jiménez, 2020. "Data-Based RC Dynamic Modelling Incorporating Physical Criteria to Obtain the HLC of In-Use Buildings: Application to a Case Study," Energies, MDPI, vol. 13(2), pages 1-22, January.
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