Issues in the Field Measurement of VOC Emission Rates.
Issues in the Field Measurement of VOC Emission Rates.
(487 K)
Persily, A. K.
Indoor Air Quality and Climate, 7th International
Conference. Proceedings. Indoor Air '96. Volume 2.
July 21-28, 1996, Nagoya, Japan, 49-54 pp, 1996.
Keywords:
indoor air quality; volatile organic compounds;
emissions; sources; measurement; computer simulation;
equations
Abstract:
The measurement of VOC emission rates in the field can
be valuable in indoor air quality research, in
evaluations of the indoor air quality impacts of design,
and in the diagnosis of indoor air quality problems.
Current approaches to measuring these emission rates
have been based on a single-zone mass balance and have
employed a number of simplifying assumptions. This
paper reviews the mass balance theory employed in field
measurements of VOC emission rates. Some concerns
associated with these measurements are discussed
including the assumption of equilibrium VOC
concentrations and the neglect of adsorption and
desorption of VOC on building surfaces. Computer
simulations are described that provide an
order-of-magnitude assessment of the impacts of these
issues.
