EETD's Kitchen Test facility - fume hood testing. EETD Researcher Woody Delp - 05/22/2013.
Roy Kaltschmidt EETD's Kitchen Test facility - fume hood testing. EETD Researcher Woody Delp - 05/22/2013.

Last September’s Passive House conference in San Francisco, Calif., featured a broad array of expert speakers—including many whose interests range much wider than Passive House. JLC was at the conference, and we sat in on a presentation by scientists from the Lawrence Berkeley National Laboratory (LBNL) about kitchen ventilation. LBNL researcher Brett Singer, the principal director of Indoor Air Quality efforts with the LBNL Residential Building Systems group, laid out the lab’s research into kitchen range hoods and exhaust fans—including some findings that will be as useful to remodelers working in old leaky houses as they are to builders who specialize in high-performance homes.

In the field, Singer and his colleagues have been taking a close look at the pollutants added to indoor air when we cook—including not just the emissions of gas burners, but also the particles generated by electric range elements, and even the particles formed from volatile gases given off by cookware and by the food itself. And in the lab, the...

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