Resolving Stack Effect Problems in a High
In high-rise buildings , the stack effect causes various problems, especially problems related to excessive pressure differences across main entrance doors and elevator doors, particularly in heating seasons. To reduce the stack effect , this study aims to find effective operation schemes for the HVAC systems in a 60-story commercial building , located in Seoul, Korea. Field measurements were ...
Abstract The stack effect in high-rise buildings has become an increasingly important concern for building performance and occupant comfort, yet it is often overlooked in design and engineering practices. This review synthesizes 122 studies into three themes of the stack effect : fundamental theory, negative impacts, and associated evaluation ...
Seven ways to fight stack effect in buildings
Consider what stack effect does to a building . If you've ever lit a fireplace, you'll know that hot air rises up the chimney and cold air is drawn from every corner of the house towards the hearth. Most high rise buildings don't have chimneys, but they do have something similar: stairwells and elevators shafts.
In high-rise residential buildings , the winter stack effect is a significant driving force for the overall air movement. The stack -driven pressure distribution has a substantial impact on indoor air quality, heating loads, comfort, system performance, and habitability, exhibiting different patterns in each unit on each floor.
Reduction Characteristics of Stack
The stack effect in high-rise buildings is driven by buoyancy when the outdoor air temperature is significantly lower than the indoor air temperature. Under such conditions, vertical pressure differences develop along the building envelope and vertical shafts, and air is driven through elevator doors, stairwells, lobbies, and other leakage paths.
Although the stack effect arises naturally from physical laws, its unregulated intensification in high-rise buildings can produce various adverse outcomes, undermining building performance, occupant health, and long-term sustainability.
The stack effect
The stack effect in high-rise buildings can mean a loss of conditioned air, uncomfortable cold air coming in at lower floors, undesirable whistling of air blowing around doors, doors that are difficult to close or open and infiltration of undesirable odors.
During the cooling season, the stack effect is reversed, but is typically weaker due to lower temperature differences. [1] In a modern high-rise building with a well-sealed envelope, the stack effect can create significant pressure differences that must be given design consideration and may need to be addressed with mechanical ventilation.
Stack Effect Considerations for Stair Pressurisation Systems in High ...
1. Introduction Stack effect is one of the most significant and often underestimated challenges affecting the performance of stair pressurisation systems in tall buildings .
This guide provides a clear, expert-level explanation of what causes stack effect and the strategies building owners, engineers, and facility managers can use to mitigate it. What Is Stack Effect ? Stack effect is the vertical movement of air inside a building caused by temperature-driven density differences between indoor and outdoor air.