The effects of different kinds of room ventilation were evaluated in an experimental chamber and in kitchens of four residences in Beijing. Carbon monoxide was used as a tracer gas in the chamber, and this together with nitric oxide and nitrogen dioxide concentrations from the gas appliances were measured in the chamber and the kitchens. The ventilation styles evaluated were natural ventilation, an exhaust fan and a kitchen range hood.
By supporting strategic energy-efficiency and associated indoor environmental quality options, the insurance industry could reduce near-term business risks caused by ordinary insured losses while making a considerable contribution to long-term reductions in greenhouse-gas emissions which also threaten their bottom line. These measures can reduce losses from: fire, ice, wind, and water damage; temperature extremes; occupational injuries; poor indoor air quality; equipment performance problems; theft; and various roadway hazards.
Fireplaces have occupied an important place in North American households for more than 400 years. They have acted as a place where the food was cooked, where people gathered around to talk at the end of the day and hopefully, where they could get warm. Even today, builders find it difficult to sell a new house which does not have a fireplace. However, housing characteristics have changed remarkably, particularly over the last 25 years.
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