An empirical approach to improving preconstruction airtightness estimates in light framed, detached homes in Canada

Khemet, Bomani; Richman, Russell

doi:10.1016/j.jobe.2020.101433

Cited by 6 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several databases contain vast records of single family or detached homes in both the United States and Canada (Finch et al, 2009;Purdy, 2018;Khemet & Richman, 2019). This makes it difficult to predict the future performance of state-of-the-art buildings using simulations with outdated or notideal data.…”

Section: Airflow Leakage Pathsmentioning

confidence: 99%

A Parametric Analysis of Internal Airflow Patterns in Supertall Passive House Multi-unit Residential Buildings

Brown

2024

Preprint

View full text Add to dashboard Cite

<p>In the face of accelerating climate change, a growing need for high density housing, and the demand for excellent indoor air quality through suitable ventilation, this study simulates internal airflow patterns of a supertall, multi-unit residential building (MURB) using parametric analysis on 87 steady-state models in CONTAM. Research is expanded from prior investigations of cold climate MURBs to the CTBUH 300 m supertall height criteria, and Passive House level airtightness. Corridor pressurization and direct-to-suite ventilation systems are modeled to predict the suitability of each system for this typology. Stepped outdoor temperature ranges identify the cold climate impacts The findings suggest vertically compartmentalization of core shafts most effectively reduce stack pressures leading to internal airflow spread. Secondly, improved airtightness of internal pressure boundaries should be applied from the core outward, in conjunction with a slightly pressurized corridor and balanced in-suite ventilation. Improved airtightness of suite doors is highlighted as a concern where other mitigation measures have not been applied, as stack pressures can become too great for ease of door operability. This study emphasizes that a Passive House envelope alone will not eliminate stack-induced suite-originating contaminated airflow.</p>

show abstract

Section: Airflow Leakage Pathsmentioning

confidence: 99%

A Parametric Analysis of Internal Airflow Patterns in Supertall Passive House Multi-unit Residential Buildings

Brown

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Current research in many cases involves the analyses of places where leaks occur [24,25], which triggers the development of practical solutions such as: novel work execution details, technological or material solutions. Some authors focus on determining the impact of technical parameters on the tightness of a building envelope.…”

Section: Introductionmentioning

confidence: 99%

Tightness of Single-Family Buildings Made in Prefabricated Wood Frame Technology

2021

View full text Add to dashboard Cite

The overall objective of the study is to determine the influence of various factors on the tightness of frame-based buildings. The study presents airtightness tests—Blow Doors Tests of single-family residential buildings made in the prefabricated wood frame technology. Primarily, the impact of selected quantitative and qualitative parameters on the determined quantity n50 was defined. For that purpose, correlation analyses were performed and the statistical hypothesis stating that there is no statistically significant linear relationship between n50 (a multiplication factor of air exchange in the building effected by pressure difference of 50 Pa) and the specified qualitative and quantitative parameters was verified. The hypothesis was verified using the F and χ2 statistics. The studies demonstrated that there are no grounds to reject the research hypothesis. The obtained results formulate a comprehensive conclusion that allows to test the tightness of buildings made in the prefabricated wood frame technology and makes the tightness results independent of many features of the examined building. Ultimately, the tightness results are only dependent on the leak of the examined object. They do not depend on roof structure, wall system, floor area, cubature, number of window openings, porch.

show abstract

Guidelines for Predicting Airtightness in Residential Buildings under Climatic Pressure Conditions

Park,

Song

2024

Energy and Built Environment

View full text Add to dashboard Cite

An empirical approach to improving preconstruction airtightness estimates in light framed, detached homes in Canada

Cited by 6 publications

References 25 publications

A Parametric Analysis of Internal Airflow Patterns in Supertall Passive House Multi-unit Residential Buildings

A Parametric Analysis of Internal Airflow Patterns in Supertall Passive House Multi-unit Residential Buildings

Tightness of Single-Family Buildings Made in Prefabricated Wood Frame Technology

Guidelines for Predicting Airtightness in Residential Buildings under Climatic Pressure Conditions

Contact Info

Product

Resources

About