Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

An Improved Method Of Modeling Infiltration In Commercial Building Energy Models

Published

Author(s)

Lisa C. Ng, Steven J. Emmerich, Andrew K. Persily

Abstract

Different strategies for improving building envelope thermal performance are being implemented in commercial building design and construction as well as being incorporated into ASHRAE standards and other design requirements. The energy impacts of unintended infiltration on building energy use have been shown to be significant. As HVAC equipment and other building sytems continue to become more efficient, the energy loss asssociated with building envelope leakage is becoming an even greater percentage of the total building energy consumed. However, current energy simulation software and design methods are generally not able to accurately account for envelope infiltration and the impacts of improved airtightness. New strategies to incorporate airflow calculations into building energy calculations are proposed in this paper. These methods, based on infiltration rates calculated using detailed multizone airflow models, are more accurate than current approaches and easier to apply than multizone airflow modeling.
Proceedings Title
Noting from paper Tech Note #1829 Pub.#914500
Conference Dates
September 10-12, 2014
Conference Location
Atlanta, GA
Conference Title
2014 ASHRAE/IBPSA-USA Building Simulation Conference

Citation

Ng, L. , Emmerich, S. and Persily, A. (2016), An Improved Method Of Modeling Infiltration In Commercial Building Energy Models, Noting from paper Tech Note #1829 Pub.#914500, Atlanta, GA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915966 (Accessed April 16, 2024)
Created June 1, 2016, Updated February 19, 2017