POTENTIAL THERMAL PERFORMANCE OF BIOCLIMATIC STRATEGIES IN HOUSING IN HOT AND HUMID CLIMATES
multifamily housing; bioclimatic; design parameters; design optimization; early design stages; INI-R metamodel
The local development of methods for determining design solutions through the creation of design spaces and sensitivity indices can contribute in several ways to match thermal performance goals, from briefing to testing design conjectures. One way is to quantify the impact of bioclimatic strategies and their respective architectural characteristics, since bioclimatology is part of architects' training. The objective of this ongoing dissertation is to demonstrate the thermal performance potential of bioclimatic strategies in housing in hot and humid climates. The research uses the INI-R metamodel to generate design combinations as design spaces and to identify solution spaces by combining sensitivity indices and interactive multivariate graphs. The design space encompasses envelope parameters and provides results for four performance indicators: cooling thermal load (CgTR), percentage of comfort hours within an operative temperature range (PHFT), maximum operative temperature (Tomáx), and minimum operative temperature (Tomín). Design spaces for bedrooms and living rooms were compared to assess the influence of space type, position within the typical floor plan, orientation, and the use of louvres and shading devices, across March, July, and December, to identify the most critical period of the year. The investigation explored eight solution fields for living rooms oriented at 135° in December, focusing on the most sensitive variables, and confirmed that qualitative bioclimatic recommendations can be quantified through the proposed method. The solution space proved to be restricted to a few parameters, with windows emerging as the primary elements responsible for thermal control in two ways: regulating heat gain and airflow. However, additional design requirements compatible with the local climate must be considered, such as the thermal properties of materials, environmental characteristics of the surroundings, and site layout.