Radon activity as a function of the controlled relative humidity ...
A change from 79% to 52% of the relative humidity produces a change of the radon concentration from 607 Bq/m 3 to 165 Bq/m 3 , representing a radon mitigation of 73%.
Download scientific diagram | Radon activity concentration [Bq m −3 ] as function of the relative humidity (%) for P1 data and AG1 in ICP I. from publication: Inter-comparison of commercial ...
Influence of humidity on radon and thoron exhalation rates from ...
Brick and granite specimens were used to study the changes of these rates as a function of the relative and absolute humidities. Measurement results showed that radon and thoron exhalation rates change to humidity with the same trends as well as effective dose could be changed by the factor of 2 due to this.
To mitigate the influence of humidity on accurate measurement of 220Rn activity concentration by radon monitors, a dynamic humidity control system based on dual gas-path mixing was developed. The system enables rapid and stable regulation of relative humidity over the range of 2.5-75.5% RH and was applied in 220Rn calibration experiments. Using flow-through 220Rn sources with activities of ...
Study on the influence of temperature and humidity on radon ...
The radon exhalation rate and transfer radon velocity between liquid and gas under different temperature and humidity conditions are investigated. The fitting formulas of radon exhalation rate and temperature and humidity are exponential functions , and each exponent is a 2nd-order polynomial. The fitting formula of transfer radon velocity and temperature is Boltzmann function , and the velocity ...
This paper focuses on effects of air change rate, indoor temperature and relative humidity on indoor radon concentrations in a one family detached house in Stockholm, Sweden. In this study a heat recovery ventilation system unit was used to control the ventilation rate and a continuous radon monitor (CRM) was used to measure radon levels.
High Indoor Radon Case Study
Indoor radon and meteorological parameters (temperature, humidity , pressure, precipitation, indoor dew point, wind direction, wind speed and heat index) were simultaneously monitored in an old residential house in a radon suspected area. Measurements were performed during the period from winter to summer (13 February 2021-15 August 2021). Indoor radon concentrations were measured with ...
The impacts of temperature, humidity , and air pressure on radon concentration in the experimental environment were specifically examined, along with the potential interactions among these factors.
