This document is a psychrometric chart that shows temperature and humidity information at sea level under normal and low temperature conditions. It displays lines and scales for dry bulb temperature, wet bulb or saturation temperature, relative humidity, enthalpy, moisture content, and sensible heat factor.

1. PSYCHROMETRIC CHART
Normal temperatures -
Barometric pressure 101.325 kPa -
Sea level
y
dit
mi
u
v eh
ati
air
rel
ry
ir
gd
J/k
nk
/kg dry a
io
tu rat
sa
t
viation kJ
lp ya
de
tha
En
enthalpy
Sensible heat factor
, °C
ure
rat
pe
tem
ion
rat
satu
or
ulb
tb
We
Moisture content (x) g/kg dry air
Dry bulb temperature, °C
Below 0°C properties and enthalpy deviation lines are for ice Volume m3/kg dry air

2. PSYCHROMETRIC CHART
Low temperatures -
Barometric pressure 101.325 kPa -
Sea level n kJ/kg dry air
air
y
dr
/kg
kJ ty
(i) idi
n C m
a tio ,° hu
Moisture content (x) g/kg dry air
ur re
enthalpy deviatio
at ive
s ratu lat
at pe re
lpy em
tha ont
En r ati
s atu
or
lb
bu
et
W
Dry bulb temperature, °C
Below 0°C properties and enthalpy deviation lines are for ice Volume m3/kg dry air
51

3. PSYCHROMETRIC
En
tha
52
lpy
at
CHART
sa
tur
ati
High temperatures -
on
(i) Barometric pressure 101.325 kPa -
kJ
/kg Sea level
dr
ya
Wet b ir
ulb or
satur
ation
temp
eratu
re, °C
relat
ive h
um idity
Below 0°C properties and enthalpy deviation lines are for ice
ir
3
ry a
m /h d
me
volu
ir
g dry a
on kJ/k
Dry bulb temperature, °C
ti
y devia
enthalp
Moisture content (x) g/kg dry air