Reducing the air change rate of a house increases the concentration of pollutants in the indoor air. These pollutants are identified and located within the residential structure. Air-to-air heat exchangers are suggested tocontrol ventilation, and the three basic types described.
Notes the trend to installing windowless kitchens, bathrooms and W.C.s in the internal zones of dwellings. Describes a research project to measure for internal kitchens the energy consumption and emission of equipment, the total daily energy consumption, air temperatures, air humidity values during cooking, comfort and air speed. Illustrates the test kitchen and gives the results of measurements of around 100 days of simulated operation for a household of four. Notes the consequences for recommended normal and peak ventilation rates.
Reviews sources of indoor air pollution, factors which influence pollutant concentration, and health aspects. Reports on investigations into carbon monoxide concentrations in kitchens with geysers. Treats various factors including geyser type, state of maintenance, frequency of use, occupant type, cooking and ventilating behaviour, time and location of measurements etc.Reports nitrogen dioxide concentration measurements in kitchens and livingrooms relating to cooking and smoking.
Presents new data acquired by experiments on the ventilation rates and the indoor air pollution caused by combustion in the dining-kitchens of sound-insulated houses. Ventilation rates were measured by means of tracer gas decay, using CO2 and CO as the tracer gases. Indoor air pollution was estimated from the elevation of CO and CO2 levels, and the effect of supply or exhaust fan systems on the control of ventilation was deduced from the level of air pollution and ventilation rates.
Discusses indoor air quality in residences with low ventilation rates. Reports investigation of indoor air pollutant levels in a test kitchen with a gas stove under various air change rates. Results indicate that gas stoves generate high emissions of carbon monoxide, nitric oxide, nitrogen dioxide, formaldehyde and respirable aerosols. Recommends a kitchen ventilation rate of at least 170 cu.m.&h.< Also reports study of CO and NO2 emissions from gas appliances in an energy- efficient research house.
Discusses use of tracer gases for the measurement of natural ventilation rates States advantages of using radio isotopes are increased speed and sensitivity. Gives expressions for calculating air change rates using radio isotopes from thedecrease in signal. Suggests use of krypton 85 or Xenon 133 as tracers. Discusses errors in the method. Reports study of air quality in a naturally ventilated building in Yakutsk. Air change rates, temperatures and concentrations of carbon monoxide were measured in kitchens with gas stoves.
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