Adaptive Courtyard Typology for Hot-Dar Climate Resilience Housing

Thesis Abstract

This study addresses the growing need for climate-responsive housing in hot-dar regions by investigating how adaptive courtyard typologies can enhance thermal comfort, energy efficiency, and resilience against heat risks in dense urban settings. The problem centers on limited implementation of courtyard-based design strategies that integrate passive cooling, daylight optimization, and microclimate modification within contemporary construction constraints, leading to elevated indoor temperatures and increased energy consumption. The aim is to develop a design-implementation-evaluation framework for adaptive courtyard typologies that can be deployed in new and retrofit housing to improve thermal performance and occupant comfort under extreme heat conditions. Specific objectives are to (i) identify courtyard design variables that most influence thermal comfort and energy use; (ii) formulate an adaptive typology capable of modular deployment across varying plot sizes; (iii) prototype the typology through a scale model and a full-scale pilot in a representative urban block; (iv) quantify performance using calibrated simulations and empirical measurements; and (v) assess social acceptance, occupier behavior, and maintenance considerations to ensure practicable adoption. The methodology integrates a mixed-methods sequential design. The research uses a convergent parallel approach in three phases concept development, empirical validation, and implementation evaluation. In Phase I, a literature-informed design framework is developed, drawing on theories of bioclimatic architecture, vernacular courtyard systems, and adaptive thermal comfort (e.g., ASHRAE standards and ISO 7730). Phase II employs a mixed-method data collection strategy (a) quantitative data from 60 household-level surveys and 20 in-situ environmental sensors deployed across five pilot housing units to capture indoor air temperature, relative humidity, operative temperature, and solar heat gain over a 12-month cycle; and (b) qualitative data from 30 semi-structured interviews with residents, urban planners, and builders to examine usability, perceived comfort, and maintenance feasibility. Phase III involves performance evaluation of the adaptive courtyard typology through computational simulations (ENVI-met and EnergyPlus) calibrated with field data, followed by a controlled quasi-experimental study employing a 11 scale model tested under a climate chamber to compare baseline and adaptive configurations. Data analysis includes regression analysis to relate courtyard variables to thermal outcomes, ANOVA to compare pilot units under different climatic days, and thematic analysis of interview transcripts to identify design acceptance and operational challenges. The conceptual framework integrates the bioclimatic approach with adaptive systems theory and a socio-technical adoption lens, culminating in a conceptual model that links courtyard morphology, microclimate modification, energy performance, and occupant behavior. Expected findings indicate that adaptive courtyard configurations with high solar shading efficiency, strategically positioned water features, and vegetation belts can reduce peak indoor temperatures by 2.5–4.0°C, decrease cooling energy demand by 18–32%, and maintain acceptable thermal comfort across the hot-dar climate typology. The study anticipates identifying a modular typology with five core modules—perimeter shading, courtyard depth optimization, vertical greenery, reflective surfaces, and thermal mass modulation—demonstrating robust performance across a range of plot sizes (90–180 m²) and occupancy patterns. The research will determine threshold values for courtyard cross-section, shading ratios, and vegetation density essential for achieving target thermal metrics, and will provide design guidelines for retrofit applications. Policy and practice implications include recommendations for building bylaws, incentive mechanisms for courtyard retrofits, and training modules for local artisans. Contribution to knowledge encompasses (i) a transferable, evidence-based adaptive courtyard typology tailored to hot-dar climates, (ii) an integrative methodology combining design prototyping, empirical field testing, and simulation-driven evaluation, (iii) a validated set of performance benchmarks linking morphology to energy and comfort outcomes, and (iv) a socio-technical assessment addressing adoption barriers and maintenance considerations. The study concludes that well-designed adaptive courtyards offer a scalable path to resilient housing by combining passive cooling with minimal energy reliance, while emphasizing user-centered operation and low-maintenance maintenance protocols. Recommendations focus on codifying courtyard design parameters in building codes, promoting pilot projects in high-density neighborhoods, and expanding training programs for designers and builders to mainstream adaptive courtyard solutions in hot-dar urban environments.