<s>
ESP-r	B-Application
is	O
an	O
open-sourced	O
building	O
performance	O
energy	O
modeling	O
software	O
that	O
was	O
created	O
by	O
the	O
University	O
of	O
Strathclyde	O
.	O
</s>
<s>
ESP-r	B-Application
can	O
model	O
the	O
thermal	O
,	O
visual	O
and	O
acoustic	O
performance	O
of	O
a	O
building	O
as	O
well	O
as	O
to	O
estimate	O
the	O
heat	O
,	O
moisture	O
and	O
electrical	O
power	O
of	O
the	O
modeled	O
building	O
.	O
</s>
<s>
ESP-r	B-Application
calculates	O
building	O
performance	O
values	O
based	O
on	O
a	O
finite	O
volume	O
approach	O
where	O
it	O
solves	O
a	O
set	O
of	O
conservation	O
equations	O
.	O
</s>
<s>
It	O
was	O
developed	O
in	O
1974	O
and	O
was	O
converted	O
in	O
2002	O
to	O
the	O
GNU	B-License
Public	I-License
License	I-License
.	O
</s>
<s>
ESP-r	B-Application
is	O
designed	O
to	O
work	O
on	O
the	O
Unix	B-Application
operating	I-Application
system	I-Application
yet	O
can	O
be	O
run	O
in	O
Windows	O
using	O
a	O
Unix	B-Application
modulator	O
or	O
run	O
with	O
the	O
Windows	O
version	O
.	O
</s>
<s>
The	O
current	O
ESP-r	B-Application
Archivist	O
is	O
Ian	O
Beausoleil	O
Morrison	O
.	O
</s>
<s>
Some	O
advantages	O
that	O
ESP-r	B-Application
has	O
are	O
its	O
power	O
and	O
flexibility	O
enables	O
a	O
well-informed	O
user	O
to	O
optimize	O
a	O
house	O
.	O
</s>
<s>
The	O
power	O
behind	O
ESP-r	B-Application
is	O
its	O
holistic	O
nature	O
and	O
range	O
to	O
features	O
.	O
</s>
<s>
ESP-r	B-Application
is	O
still	O
mainly	O
a	O
research	O
tool	O
even	O
though	O
it	O
is	O
used	O
for	O
some	O
consulting	O
and	O
teaching	O
applications	O
.	O
</s>
<s>
ESP-r	B-Application
has	O
been	O
extensively	O
validated	O
and	O
there	O
are	O
various	O
studies	O
and	O
thesis	O
done	O
on	O
the	O
topic	O
.	O
</s>
