| Title |
A Study on the Building Envelope Design Guidelines for Energy Conservation Considering Thermal Storage Capacity |
| Abstract |
The purpose of this study is to suggest building envelope design guidelines to reduce energy-load in buildings considering Thermal Storage Capacity of building envelopes.In this study, thermal storage capacity of eight different building materials was calculated through the laboratory experiments of specific-heat, density and thermal conductivity. Based upon these values, computer simulation using MICRO-DOE2 program was conducted on the composite walls of each orientation made up of various building materials having different thermal storage capacities in order to determine building energy-load, Statistical analysis was carried out to determine the correlation between the decrement-factor of subject walls and the energy-load of buildings.The results of the study can be summarized as follows.1.According to the results of simulations, the energy-loads in buildings composed of walls having different thermal storage capacities are different even if the walls have the same K-Value.2.In heating-load-dominated buildings, it it suggested that the heavy-weight walls with high thermal storage capacities be employed in the east, west and south walls, to store solar radiation positively. And the exterior insulation is recommended as the decrement-factor of the exterior insulating wall is relatively smaller than that of the interior insulating wall.3.In cooling-load-dominated buildings, it is favorable that the lightweight walls with low thermal storage capacities be adopted in the east, west and south walls, to block solar radiation actively. And the lucrative location of insulation in the walls is interior due to the larger decrement-factor of interior insulation.4.According to the computer simulation and the statistical analysis, the energy-load fluctuation of the south wall was especially larger than that of other orientation walls. Therefore, the control of solar radiation through the south wall has a great importance and must be considered importantly in energy-conscious building design. |