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ENERGY IN BUILDINGS

Hygrothermal comfort | Energy efficiency

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Group of Energy in Buildings

 
As the group Energy in Buildings, we perform basic research with the aim to understand and describe heat and mass transfer, which affect the thermal performance of buildings. We also do applied research to achieve hygrothermal comfort inside buildings with the minimum energy for cooling or heating.
We have developed tools, methodologies and laboratories to evaluate the thermal performance of the envelope constructive systems and also to improve natural ventilation.
The research topics of the group are heat transfer in constructive systems, low energy climatization systems, natural ventilation and daylighting.

News

  • A methodology to evaluate the indoor natural ventilation in hot climates: Heat Balance Index

    Article by Castillo, J.A., Huelsz, G. in Building and Environment 114 (2017) 366–373. •A methodology to evaluate the thermal comfort by indoor natural ventilation in hot climates. •Heat Balance Index (HBI) with heat transfer models of the human body to the surroundings. •HBI for the comfort air velocity range and for the well-ventilated percentage of an indoor space. •CFD simulation of natural cross-ventilation in a room used as HBI application example. •CFD simulation with 3D steady RANS and SST k-ω turbulence model experimentally validated.
  • Effect of windexchanger duct cross-section area and geometry on the room airflow distribution

    Article by M.V. Cruz-Salas, J.A. Castillo, G. Huelsz in Journal of Wind Engineering & Industrial Aerodynamics 179 (2018) 514–523. •Natural ventilation of a room with a leeward or windward window and different windexchangers. •Windexchanger square or rectangular duct cross-section effect on the room airflow distribution. •Experiments with scaled models and SPIV technique in an open water channel. •Homogeneity index for assessing airflow distribution. •Windexchanger has better performance with an opposite function to that of the window.

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Contact

Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco S/N Temixco, Morelos 62580 México.