An Innovative Enhanced Wall to Reduce the Energy Demand in Buildings

34th UIT Heat Transfer Conference 2016

Fantozzi, F.^1 ; Filipeschi, S.^1 ; Mameli, M.^1 ; Nesi, S.^1 ; Cillari, G.^1 ; Mantelli, M.B.H.^2 ; Milanez, F.H.^2

Department of Energy, Systems Land and Construction Engineering, University of Pisa, Largo L. Lazzarino, Pisa

56122, Italy^1

Mechanical Engineering Department, Federal University of Santa Catarina UFSC, Brazil^2

关键词: Domestic environments;    Dynamic thermal modeling;    Energy;    saving in buildings;    Energy-saving rates;    European Countries;    Indoor temperature;    Prefabricated house;    Two phase loop thermosyphon;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/796/1/012043/pdf
DOI  :  10.1088/1742-6596/796/1/012043

来源: IOP

【 摘 要 】

Energy saving in buildings is one of most important issues for European countries. Although in the last years many studies have been carried out in order to reach the zero-consumption house the energy rate due to passive solar heating could be further enhanced. This paper proposes a method for increasing the energy rate absorbed by opaque walls by using a two phase loop thermosyphon connecting the internal and the external façade of a prefabricated house wall. The evaporator zone is embedded into the outside facade and the condenser is indoor placed to heat the domestic environment. The thermosyphon has been preliminary designed and implanted into a wall for a prefabricated house in Italy. An original dynamic thermal model of the building equipped with the thermosyphon wall allowed the evolution of the indoor temperature over time and the energy saving rates. The transient behaviour of the building has been simulated during the winter period by using the EnergyPlusTMsoftware. The annual saving on the heating energy is higher than 50% in the case of a low consumption building.