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Table 1 Notation

From: A review on mathematical models for estimating indoor radon concentrations

Symbol

Unit

Description

C bm

Bq/m3

Radon concentration in building material (BM)

C i

Bq/m3

Indoor radon concentration

C o

Bq/m3

Radon concentration of outdoor air

C s

Bq/m3

Radon concentration in soil

C w

Bq/m3

Radon concentration in water supply

F s

Bq/(m2 · s)

Total radon flux from soil into building

k a

m/(s · Pa)

Advection transfer coefficient of soil

k d,bm

m/s

Diffusion transfer coefficient of BM

k d,s

m/s

Diffusion transfer coefficient of soil

q ij

m3/s

Air current from compartment i to compartment j

S bm

m2

Indoor surface area of radon containing BM

S g

m2

Building area towards ground

t w

dimensionless

Radon transfer efficiency of water supply

U w

m3/s

Use rate of water

V

m3

Volume of the indoor

ΔP s − i

Pa

Soil-indoor pressure difference

λ

1/s

Radon decay constant

λ v

1/s

Ventilation rate