Design guidance for net zero energy mixed-use buildings in Seoul

Abstract

Current Net-Zero Energy Building (NZEB) design lacks specific guidance for seasonal climates like Seoul. This paper addresses this deficiency by proposing a step-by-step computational framework for mixed-use NZEBs in Seoul. Methods include sequential optimization of massing, volume, façade, HVAC systems, and BIPV integration via simulations. Results show optimized passive design and efficient active systems significantly reduce energy demand by 31%, then NZEB to be achieved through both onsite BIPVs design (21% of reduced energy demand) and offsite renewable sources (remaining 79%). The framework provides a practical, climate specific NZEB design pathway, contributing valuable guidance for sustainable building in similar urban contexts.

Key Innovations

• Provided Seoul-Specific NZEB Design Guideline: A structured, climate-tailored design methodology for Net-Zero Energy Buildings in Seoul.
• Urban Contextual Optimization: Demonstrates passive design strategies (such as massing and façade) accounting for dense urban shading effects.
• BIPV Potential Quantified: Quantifies the significant contribution of both rooftop and façade integrated photovoltaics

Practical Implications

For NZEB design in Seoul, simulation practitioners and building designers should always prioritize passive massing and facade optimization to minimize thermal loads. Consider cross-discipline collaboration with MEP engineers for climate-specific active system strategies. Be aware simulations inform net-zero operational energy saving measures, but expand research to embodied carbon, costs, and long-term performance for life-cycle environmental impact reduction.