Ventilation Characterization of a New Manufactured House.
Ventilation Characterization of a New Manufactured
Persily, A. K.; Crum, E. C.; Nabinger, S. J.; Lubliner,
Ventilation, Humidity Control and Energy Proceedings.
Air Infiltration and Ventilation Centre (AIVC)
Conference and Building Environment and Thermal Envelope
Council (BETEC) Conference, 24th. Proceedings.
(International Energy Agency (IEA) Energy Conservation
in Buildings and Community Systems Program. Annex V: Air
Infiltration and Ventilation Centre.) October 14, 2003,
Washington, DC, 295-300 pp, 2003.
housing; ventilation; manufactured housing; mechanical
ventilation; residential buildings; instruments; indoor
A new, double-wide manufactured home has been installed
on the NIST campus for ventilation, energy and indoor
air quality studies. The primary purposes of the
facility are to study the mechanical ventilation
requirements for manufactured homes in the U.S. and to
investigate the systems used to meet these requirements.
In addition, the building will be used to investigate
moisture in buildings, indoor air quality impacts of
combustion appliances and VOC emissions from building
materials and furnishings. The first phase of this
multiyear research program has focused on, airtightness,
ventilation system airflows and building air change
rates. This paper describes the measurement results
including envelope and duct airtightness, ventilation
system airflow rates, and whole house air change rates
under different ventilation configurations and weather
conditions are also described. In addition, a model of
the building in the multizone airflow program CONTAMW is
presented along with comparisons between model
predictions and measurements of air change rates and
building and system pressures. The results indicate that
the envelope and air distribution ductwork are fairly
leaky, but not unusually high for typical U.S.
manufactured homes. In addition, the airflow rates of
the local exhaust fans (bath and kitchen) are
significantly below the HUD requirements. Finally, the
air change rates predicted with CONTAMW are in generally
good agreement with the measured values.