Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


A Comparison of Methods for Evaluating Ventilation Cooling Potential Building Program Based Climate Analysis for Early Design Decisions

Alpha Yacob Arsano and Christoph Reinhart
Massachusetts Institute of Technology, Cambridge, USA

Abstract: One of the most widely discussed passive building design strategies is using natural ventilation for cooling. In addition to providing fresh air, which enhances occupant productivity and comfort, strategic implementation of natural ventilation in buildings reduces the energy needed for cooling. And this reduction in energy consumption significantly reduces carbon dioxide emissions. During the initial design phase, designers routinely use climatefile based analysis to evaluate the potential for comfort ventilation against other passive building strategies. Following this initial screening, it is customary to conduct detailed simulations to further develop design ideas. At this point, inconsistencies can arise between the early climate-file based analysis and later-stage simulations. Major differences arise from limitations of climate-file based analysis to account for influences of construction assemblies, building program, and occupant comfort preferences. This manuscript presents a building performance-based climate analysis method where quick, single-zone simulations are run in EnergyPlus. The ventilation cooling potential for a site and a building program is calculated using a series of Python scripts.
Pages: 1284 - 1293