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Revised version of the inertia concept in the utilization of heat gains: night ventilation.

Revisión del concepto de la inercia en el uso de las ganancias de calor: ventilación nocturna.

Author(s) : SALMERÓN LISSEN J. M., SÁNCHEZ DE LA FLOR F. J., RUIZ PARDO A., et al.

Summary

The utilization factor is a relative well-known concept used in some simplified calculation methods as CEN EN-13790, in this regulation this factor depends on the thermal inertia and the ratio heat gains/heat losses. In this paper the authors define the utilization factor for cooling. It starts analysing the energy stored and released in building components as walls. In this step the authors establish a load period and a discharge period. In the load period the component will release heat/cool load, while in the discharge period the component will storage heat/cool discharge. The duration of each couple of charge/discharge periods is 24 hours. If this period is repeated a sufficient number of times a quasi-steady-state will be obtained. In this way they are able to assess the absorbed energy by the component. Up to this point we have quantified how much heat is absorbed from the indoor space to the component as a consequence of the existence of night ventilation. Further, the authors explain how the heat absorbed is used to diminish the cooling requirements revisiting the concept of utilization factor. Next they analyse all the concerning parameter making special attention to the inertia of the component. Finally, the influence of the inertia of each component in the total inertia of the room is determined.

Details

  • Original title: Revisión del concepto de la inercia en el uso de las ganancias de calor: ventilación nocturna.
  • Record ID : 2008-1400
  • Languages: Spanish
  • Subject: General information
  • Publication date: 2006/11/20
  • Source: Source: Climamed 2006, Lyon
    PII-2.2; 207-216; fig.; tabl.; 9 ref.

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