Analysis of the Impact of Double-Skin Facade Materials on Energy Optimization in Solar Residential Buildings Designed for Cold Mountainous Climates
This research investigates the impact of double-skin facade (DSF) materials on optimizing energy consumption in solar residential buildings situated in cold mountainous climates. Given the climatic challenges of these regions, such as low temperatures and cold winds, the application of DSF systems is gaining attention as a sustainable strategy to reduce energy consumption and enhance thermal comfort. This study addresses how the selection of appropriate materials within DSFs can contribute to minimizing energy use and improving the thermal performance of buildings in this specific climate.
A primary challenge in residential buildings within cold mountainous areas is the high energy consumption driven by the constant need for heating. Building envelopes designed without considering climatic architectural principles often lead to increased energy loss and reduced heating system efficiency. Consequently, optimizing facade design and utilizing appropriate building materials for exterior envelopes can significantly decrease energy demand. The DSF system, as an efficient sustainable design solution, facilitates a better balance between heat gain and loss. However, a comprehensive understanding of how different materials used within this system impact energy reduction specifically in cold mountainous climates is lacking, underscoring the need for this investigation.
The primary objective of this research is to examine the influence of materials used in DSFs on reducing energy consumption in solar residential buildings designed for cold mountainous climates. The study aims to provide scientifically-backed recommendations for selecting optimal materials for double-skin envelopes to achieve energy savings while ensuring occupant thermal comfort . Key research questions explored include: What passive design strategies can enhance the thermal performance of residential buildings in cold mountainous climates? Which materials are most suitable for DSFs to minimize winter heat loss while preventing summer overheating? How can building orientation and form be optimized to mitigate negative effects of cold winter winds and reduce urban heat island effects in summer? What is the typical energy consumption pattern in conventional residential buildings in these areas, and how can DSF implementation optimize it?
The methodology employs energy simulation using specialized software, namely EnergyPlus and DesignBuilder. Key variables analyzed include the properties of DSF materials (type, thickness, structure, thermal absorptivity/emissivity), building orientation, solar radiation levels, and specific climatic conditions. These factors were assessed for their impact on building energy consumption and internal thermal comfort conditions. Additionally, the performance of four distinct double-glazed window types (standard double-glazing, double-glazing with 4mm and 6mm panes, vertical shaft window, and an integrated window system) was evaluated using the PMV (Predicted Mean Vote) thermal comfort index and heat exchange rate analysis
Simulation results demonstrate that buildings incorporating DSFs exhibit lower energy consumption compared to conventional buildings. The extent of energy reduction is contingent upon the specific materials employed in the facade layers and the overall system design. The findings indicate that strategic material selection can effectively control heat exchange between the interior and exterior environments, thereby reducing the need for heating in winter and cooling in summer. Buildings utilizing DSFs showed a marked reduction in heating demand while simultaneously improving thermal comfort conditions .
In essence, the DSF system contributes to reduced heating loads during winter and helps regulate internal temperatures during summer. The choice of materials and meticulous design significantly influence its optimal performance. These findings align with previous research, confirming the potential effectiveness of DSFs as a sustainable solution in cold climates. Research limitations include potential constraints in simulation data availability and the inherent accuracy limitations of software models .
The outcomes of this study offer valuable insights for architects and designers aiming to optimize energy performance and create sustainable buildings in challenging climates. Utilizing optimal materials within DSFs can substantially decrease energy consumption in residential buildings located in cold mountainous regions. Specifically, materials possessing high thermal insulation properties and appropriate solar energy absorption capabilities demonstrate the greatest potential for minimizing winter heat loss and preventing excessive indoor temperature increases in summer. Furthermore, optimizing building orientation and integrating natural ventilation strategies can further enhance thermal performance. It is concluded that DSF implementation plays a significant role in energy reduction and thermal comfort improvement. Further research focusing on optimizing the thickness and combination of materials within DSFs is recommended. Architects designing solar buildings for cold climates are strongly encouraged to consider the integration of double-skin facades .