A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ener-Habitat: A Cloud Computing Numerical Tool to Evaluate the Thermal Performance of Walls/Roofs
Ener-Habitat is a cloud computing numerical tool designed to evaluate the thermal performance of building envelope walls/roofs. It solves the time dependent heat transfer equation in one or two dimensions with convective boundary on the inside and periodic outdoor temperature, solar radiation, and convective boundary condition on the outside. All the needed data is introduced through a Graphical User Interface. First, the user defines if the evaluation is for a constructive system (CS) composed by only homogeneous layers or for a CS that contains one no-homogeneous layer. A homogeneous layer is composed by only one material and has no air cavities in it. A no-homogeneous layer is composed by two or more materials or has air cavities in it. The user selects a city of Mexico where the evaluation is performed, the time period (typical day of month or annual evaluation), the type of CS (wall or roof) and the condition in which the CS is evaluated (air-conditioned or non-air conditioned). If the user selected a CS composed by homogeneous layers, Ener-Habitat can compare up to five CS at once and it last a couple of minutes, for CS with a no-homogeneous layer, the numerical analysis takes some hours, and the user can evaluate only one CS at once. Up to now, Ener-Habitat can evaluate three types of no-homogeneous layers. The materials and dimensions of the layers, and the solar absortance of the outdoor surface must be defined. When the CS is evaluated considering an air-conditioned room, with constant indoor temperature at the comfort temperature, the reported parameter is the energy per unit area per selected period needed to keep the room at the comfort temperature and the best CS configuration is the one with the lowest value. When the CS is evaluated considering a non-air-conditioned room, one of the reported parameters is the heat transfer through the CS per unit area per the selected period. In this case, the best CS configuration is the one with the lowest value. Three examples are presented, the first two include homogenous layers and the last one a constructive system with one no homogeneous layer.
Ener-Habitat: A Cloud Computing Numerical Tool to Evaluate the Thermal Performance of Walls/Roofs
Ener-Habitat is a cloud computing numerical tool designed to evaluate the thermal performance of building envelope walls/roofs. It solves the time dependent heat transfer equation in one or two dimensions with convective boundary on the inside and periodic outdoor temperature, solar radiation, and convective boundary condition on the outside. All the needed data is introduced through a Graphical User Interface. First, the user defines if the evaluation is for a constructive system (CS) composed by only homogeneous layers or for a CS that contains one no-homogeneous layer. A homogeneous layer is composed by only one material and has no air cavities in it. A no-homogeneous layer is composed by two or more materials or has air cavities in it. The user selects a city of Mexico where the evaluation is performed, the time period (typical day of month or annual evaluation), the type of CS (wall or roof) and the condition in which the CS is evaluated (air-conditioned or non-air conditioned). If the user selected a CS composed by homogeneous layers, Ener-Habitat can compare up to five CS at once and it last a couple of minutes, for CS with a no-homogeneous layer, the numerical analysis takes some hours, and the user can evaluate only one CS at once. Up to now, Ener-Habitat can evaluate three types of no-homogeneous layers. The materials and dimensions of the layers, and the solar absortance of the outdoor surface must be defined. When the CS is evaluated considering an air-conditioned room, with constant indoor temperature at the comfort temperature, the reported parameter is the energy per unit area per selected period needed to keep the room at the comfort temperature and the best CS configuration is the one with the lowest value. When the CS is evaluated considering a non-air-conditioned room, one of the reported parameters is the heat transfer through the CS per unit area per the selected period. In this case, the best CS configuration is the one with the lowest value. Three examples are presented, the first two include homogenous layers and the last one a constructive system with one no homogeneous layer.
Ener-Habitat: A Cloud Computing Numerical Tool to Evaluate the Thermal Performance of Walls/Roofs
Barrios, Guillermo (author) / Huelsz, Guadalupe (author) / Rojas, Jorge (author)
2014
10 Seiten, 9 Quellen
Conference paper
English
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