<s>
Thermodynamic	B-Application
diagrams	I-Application
are	O
diagrams	O
used	O
to	O
represent	O
the	O
thermodynamic	O
states	O
of	O
a	O
material	O
(	O
typically	O
fluid	O
)	O
and	O
the	O
consequences	O
of	O
manipulating	O
this	O
material	O
.	O
</s>
<s>
For	O
instance	O
,	O
a	O
temperature	O
–	O
entropy	B-Algorithm
diagram	O
(	O
T	O
–	O
s	O
diagram	O
)	O
may	O
be	O
used	O
to	O
demonstrate	O
the	O
behavior	O
of	O
a	O
fluid	O
as	O
it	O
is	O
changed	O
by	O
a	O
compressor	O
.	O
</s>
<s>
The	O
main	O
feature	O
of	O
thermodynamic	B-Application
diagrams	I-Application
is	O
the	O
equivalence	O
between	O
the	O
area	O
in	O
the	O
diagram	O
and	O
energy	O
.	O
</s>
<s>
Specific	O
to	O
weather	O
services	O
,	O
there	O
are	O
mainly	O
three	O
different	O
types	O
of	O
thermodynamic	B-Application
diagrams	I-Application
used	O
:	O
</s>
<s>
Thermodynamic	B-Application
diagrams	I-Application
usually	O
show	O
a	O
net	O
of	O
five	O
different	O
lines	O
:	O
</s>
<s>
The	O
path	O
or	O
series	O
of	O
states	O
through	O
which	O
a	O
system	O
passes	O
from	O
an	O
initial	O
equilibrium	O
state	O
to	O
a	O
final	O
equilibrium	O
state	O
and	O
can	O
be	O
viewed	O
graphically	O
on	O
a	O
pressure-volume	O
(	O
P-V	O
)	O
,	O
pressure-temperature	O
(	O
P-T	O
)	O
,	O
and	O
temperature-entropy	O
(	O
T-s	O
)	O
diagrams	O
.	O
</s>
