What is the impact of natural ventilation on indoor comfort and energy use?

Insung Kang - July 15, 2022

Long span (2 minutes)

What is the impact of natural ventilation on indoor comfort and energy use?

What is this graphic showing? Describe the different parts of the graphic and how it communicates the data.

This case study simulated natural ventilation in a midrise multi-family residential building in Chicago, IL. This study used computational fluid dynamics (CFD) and building energy simulations to explore the feasibility of natural ventilation in the case-study building, during shoulder seasons when natural ventilation is most appropriate. To the end, a parametric study on the energy consumption of the building was conducted to explore different natural ventilation scenarios with various environmental control set-points, compared to a mechanical ventilation system.

What type of graphic is this?

  • Case Study / Multiple

Design Variables

  • Passive strategies

Is this part of the ASHRAE-209 cycle?

  • Cycle 2 Conceptual Design
  • Cycle 6 Design Integration + Optimization
  • Cycle 7 Energy Simulation-Aided Value Engineering

What tools were used for the simulation analysis?

  • Computational Fluid Dynamics
  • OpenStudio

What tools did you use to create the graphic?

  • PowerPoint

What was successful and/or unique about the graphic in how it communicates information?

The methods and the results herein could be used to assess the effectiveness of natural ventilation in a building in the design phase. Future work could systematically explore a larger variety of building types with actual energy consumption data, implement both steady-state and transient CFD simulations with multidirectional and temporal variations, explore buoyancy-driven ventilation, and invest

Is there anything else you would like to mention?

Thank you so much for this opportunity!

Additional credits and other contributors:

Huge thanks to the whole Net-zero energy building design team on this project and Prof. Edoarda Corradi, Dr. Mohammad Heidarinejad, and Dr. Brent Stephens.

Included in the competition: