Теплоізоляція. Масообмін. Фізичні величини та визначення понять

1 2 4 0 1 2 З? 4

—? —? —? —? —? 1) 2) 3) —? —? —? —? —? ISO 9229,

THERMAL INSULATION

MASS TRANSFER

Physical quantities and definitions
0 ISO 7345 Thermal insulation — Physical quantities and definitions
ISO 9251 Thermal insulation — Heat transfer conditions and properties of materials — Vocabulary
ISO 9346 Thermal insulation — Mass transfer — Physical quantities and definitions
ISO 9229 Thermal insulation — Thermal insulating materials and products — Vocabulary 1 *
ISO 9288 Thermal insulation — Heat transfer by radiation — Physical quantities and definitions 1 *.

ISO 7345 ISO 9251 ISO 9346 ISO 9229 ISO 9288 1

2 2.1

3.2 X 3.4 V Pv - Pv
content mass by mass)

W = g = -Dgradv, D V — а?) g = -8 V grad v
b) g =-8 8 V — p v — 3.17

3.18 g = -D w grad w ,
w — 3.19 9 = -X m grad s,
s —

coefficient of water vapour transfer)
a) g = б?) v a Pva ’ Pvs — . dw
flew — g = -Dj-grad 7,
/(m 2 -s-K)) 3.23 m s - Ay/t,
t — t —

/ S = l, 3.34

3.35

3.36 4 V — w — g — m — m — p — s — T — air permeance 3.28
air resistance 3.29
degree of saturation 3.9
density of air flow rate 3.26
density of gas flow rate 3.30
density of moisture flow rate 3.12
gas diffusion coefficient 3.33
gas permeability 3.32
gas permeability coefficient 3.36
gas permeance 3.31
gas solubility 3.34
gas solubility coefficient 3.35
humidity by mass 3.2
humidity by volume 3.1
hygroscopic sorption curve 2.6
mass transfer 2.1
moisture 2.2
moisture conductivity 3.19
moisture content mass by mass 3.8
moisture content mass by volume 3.6
moisture content volume by volume 3.7
moisture differential capacity 3.21
moisture diffusivity 3.18
moisture flow rate 311
moisture permeability 3.14
moisture permeance 3.15
moisture resistance 3.16
moisture resistance factor 3.17
partial water vapour pressure 3.3
permeability of a porous medium 3.27
relative humidity 3.4
specific enthalpy 3,5
specific latent enthalpy of evaporation or condensation 3.5.1
specific latent enthalpy of melting (or freezing) 3.5.2
suction 3.10
suction curve 2.7
surface coefficient of water vapour transfer 3.20
thermal diffusion coefficient of moisture 3.22
water penetration coefficient 3.24
water sorption coefficient 3.23
water vapour 2.3
water vapour convection 2.5
water vapour diffusion 2.4
water vapour diffusion coefficient in the air 3.13
’' 1