Quantitative Assessment of CFD-Based Micro-Scale Renovation of Existing Building Component Envelopes
Yan Pan, Lin Zhong, Jin Xu
TL;DR
This paper explores how bionic designs can improve ventilation in old buildings, using simulations to find the best structures for better airflow and energy efficiency.
Contribution
The study introduces five bionic envelope structures for air conditioning units and evaluates their ventilation performance using CFD simulations at multiple scales.
Findings
The spider web structure significantly improves flow field uniformity and reduces low-speed stagnation areas.
The spider web structure reduces wake ranges and balances pressure distribution around buildings.
The spider web structure increases average wind speed by 1.1–1.4% at townhouse and community scales.
Abstract
With the acceleration of urbanization, environmental degradation is increasingly restricting the improvement of residents’ quality of life, and promoting the transformation of old communities has become a key path for sustainable urban development. However, existing buildings generally face challenges, such as the deterioration of the performance of the envelope structure and the rising energy consumption of the air conditioning system, which pose a serious test for the realization of green renovation. Inspired by the application of bionics in the field of architecture, this study innovatively designed five types of bionic envelope structures for outdoor air conditioning units, namely scales, honeycombs, spider webs, leaves, and bird nests, based on the aerodynamic characteristics of biological prototypes. The ventilation performance of these structures was evaluated at three…
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Taxonomy
TopicsWind and Air Flow Studies · Hygrothermal properties of building materials · Solar Energy Systems and Technologies