Characterization of emission sources into the indoor environment. Annual report, March 1982-March 1983

Technical Report · Fri Apr 01 04:00:00 EST 1983

OSTI ID:5748676

Moschandreas, D J; Relwani, S; Cole, J T; Elkins, R H; Macriss, R A

Indoor air pollution in residences, offices, public access buildings, and the like may be as important a factor to public health as pollution in the outdoors and in indoor-industrial environments. The advent of energy conservation measures, new technologies, and new materials in buildings may exacerbate the potential indoor air pollution problem. In addition to others, unvented gas appliances are perceived to be sources of indoor nitric oxide (NO) and nitrogen dioxide (NO2). Two methods were used for determining emission rates of gas combustion products from unvented gas appliances: (1) Direct measurements that divert all products to the sampling port; and (2) estimations using a mass balance equation and data obtained from two sampling ports inside an environmental chamber. All experiments were performed with three gas ranges, using two combustion efficiencies. Experiments in the environmental chamber were performed using three air exchange rates: 1.0, 2.5, and 5.0 air changes per hour. All experiments were performed with three gas ranges, using two combustion efficiencies. Emission rates from unvented gas appliances have been obtained for NO, NO2, NOx, and CO by direct measurements and by calculations. Transformation rates were also estimated for NO2, NO, and NOx. These rates are very low indicating minimal chemical activity in the chamber. Emissions of volatile organic compounds and polynuclear aromatic hydrocarbons are found to be minimal. Emissions of total particulate matter and formaldehyde are low.

• Research Organization: IIT Research Inst., Chicago, IL (United States)
• OSTI ID: 5748676
• Report Number(s): PB-92-137561/XAB; CNN: GRI-5081-251-0575
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AIR POLLUTION MONITORING
ALDEHYDES
AROMATICS
BUILDINGS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ECOLOGICAL CONCENTRATION
ENERGY CONSERVATION
FORMALDEHYDE
HYDROCARBONS
INDOOR AIR POLLUTION
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION
POLLUTION SOURCES
POLYCYCLIC AROMATIC HYDROCARBONS
VENTILATION