International. Scientists from the universities of Granada, Seville and Almeria have developed a transfer system for the verification of energy savings in buildings. The methodology has been tested at the Madrasa Palace in Granada.
The researchers of the ETS of Building Engineering of the University of Granada (UGR) Julián Arco and David Hidalgo, together with the researchers of the University of Seville José Sánchez, Mari Carmen Guerrero and Servando Álvarez, and the professor of the University of Almería Francisco Gil, have developed a transfer system for the verification of energy savings in buildings based on the baseline.
This system is one of the basic pillars for measuring the savings that occur after the implementation of an energy efficiency measure. In this sense, researchers have provided various solutions to obtain it by reviewing mathematical models. These have required a very detailed knowledge of the building that, together with the analysis of a volume of data, have allowed to obtain an excellent adjustment in the results and therefore, of the energy savings achieved in the Palacio de la Madraza, a fourteenth-century building owned by the UGR.
The baseline methodology proposed by the researchers presents a combination of two models based on transfer functions. These are easily identifiable with the experimental data and also the monitoring required to adjust them is minimal. This has consisted of the placement of ambient temperature probes in the building's premises during the period of a full year. These data, together with the records of the beginning and end of the air conditioning and ventilation time have allowed the development of the same.
This developed formulation gives the models the ability to characterize the dynamic effects linked to the thermal inertia of the building and its operating conditions by variables that are. In addition, due to the linking of the coefficients of the models with the characteristic energy parameters of the building, it is possible to make quality estimates with input variables different from those used in their calibration.
This research, published in the journal Applied Energy, can be extrapolated to any building or use, allowing it to serve as a support tool for both energy reduction and the assessment of energy saving measures imposed at any given time.
