Thermal
performance
of
densely
populated
underground
buildings
is
affected
by
factors
such
as
the
surrounding
rock,
ventilation
and
indoor
heat
source,
etc.,
but
few
experimental
studies
on
thermal
control
for
this
type
have
been
reported.
In
study,
a
full-size
50-person
mine
refuge
chamber
newly
constructed
to
test
under
natural
convection
ventilation,
with
assistance
using
ducts
simulate
human
release.
The
results
show
that
temperature
gradually
increases
from
bottom
top,
it
can
be
distributed
more
evenly
through
ventilation.
When
rate
equal,
air
inlets,
temperature,
whereas
number
inlets
has
weak
influence
trend
temperature.
transfer
intensity
between
rock
increase
source
decreases
initial
(ISRT).
For
30
people,
cooling
measures
are
required
ensure
safety
96
h
when
ISRT
over
21.3
°C.
27.6
°C,
0.36
m3/min
per
capita
26
°C
also
satisfy
requirement.
