Measurements in the basement of our house indicate radon concentration of 6pCi/L. The outdoor air in...

Transcribed Image Text:

Measurements in the basement of our house indicate radon concentration of 6pCi/L. The outdoor air in our area has a radon concentration of 1pCi/L. The basement which has volume of 8000ft3, is believed to have an infiltration rate of outside air of 0.5 air change per hour. The air in the soil at which air from underneath the house has a radon concentration of 1000pCi/L. Assume Radon decay rate is negligible. a) Estimate the rate at which air from underneath the house leaks into basement b) If we decide to force outside air into the basement to increase ventilation, how much we need to make it to reduce radon concentration to 4pCi/L? c) What other alternative could we try to reduce radon concentrations in the basement? Measurements in the basement of our house indicate radon concentration of 6pCi/L. The outdoor air in our area has a radon concentration of 1pCi/L. The basement which has volume of 8000ft3, is believed to have an infiltration rate of outside air of 0.5 air change per hour. The air in the soil at which air from underneath the house has a radon concentration of 1000pCi/L. Assume Radon decay rate is negligible. a) Estimate the rate at which air from underneath the house leaks into basement b) If we decide to force outside air into the basement to increase ventilation, how much we need to make it to reduce radon concentration to 4pCi/L? c) What other alternative could we try to reduce radon concentrations in the basement?