Effects of Operational Factors on Pollutant Emission Rates from Residential Gas Appliances

Emission factors from residential combustion appliances burning Portuguese biomass fuels.

Smoke from residential wood burning has been identified as a major contributor to air pollution, motivating detailed emission measurements under controlled conditions. A series of experiments were performed to compare the emission levels from two types of wood-stoves to those of fireplaces. Eight types of biomass were burned in the laboratory: wood from seven species of trees grown in the Portu...

Non-Intrusive Submetering of Residential Gas Appliances

A new technique was developed to non-intrusively monitor the use of individual gas appliances in homes. It relied on a very sensitive master gas meter equipped with a pulse meter, data logger, and software. The procedure involves two steps: decomposition and identification of the end uses. The technique is about 95% accurate but the algorithms can still be confused by some relatively common sit...

Effect of Various Parameters on Emission Factors of Gas Flares

Impact of H2S Content and Excess Air on Pollutant Emission in Sour Gas Flares

In sour gas flares,  content like any other components in inlet gas influences adiabatic flame temperature, which, in turn, impacts on the pollutant emission. Wherever flame temperature increases, the endothermic reaction between  and  is accelerated, which means higher  emission to the atmosphere. In this work, we developed an in-house MATLAB code to provide an environment for combustion calcu...

On-road measurement of gas and particle phase pollutant emission factors for individual heavy-duty diesel trucks.

Pollutant concentrations in the exhaust plumes of individual diesel trucks were measured at high time resolution in a highway tunnel in Oakland, CA, during July 2010. Emission factors for individual trucks were calculated using a carbon balance method, in which pollutants measured in each exhaust plume were normalized to measured concentrations of carbon dioxide. Pollutants considered here incl...