Sustainability,
Journal Year:
2024,
Volume and Issue:
16(13), P. 5704 - 5704
Published: July 3, 2024
A
heating,
ventilation,
and
air-conditioning
system
is
designed
for
the
entire
space
but
falls
short
in
meeting
diverse
individual
needs.
Therefore,
personalized
environmental
control
proposed
to
address
thermal
requirements
it
has
been
widely
accepted
produced
have
significant
practical
value
humans.
In
order
enhance
comfort
level
based
on
PECS,
impact
of
airflow
direction
towards
head
terms
physiological
psychological
sensations
was
investigated.
Different
directions
were
considered
as
follows:
front
blowing
(FB-PV),
side
(SB-PV),
back
(BB-PV),
top
(TB-PV),
a
group
No-PV.
total
56
participants
invited
assess
environment,
their
skin
temperature
measured.
The
results
revealed
that
improved
reduced
mean
by
0.4–0.6
°C,
with
FB-PV
showing
particularly
promising
results.
TB-PV
demonstrated
highest
score
+1.05
(slightly
higher
than
“Just
comfortable
(+1)”)
scored
significantly
overall
willingness
at
+1.21
(higher
“Willing
(+1)”).
Conversely,
resulted
discomfort
due
restricted
breathing
under
continuous
condition.
Building and Environment,
Journal Year:
2024,
Volume and Issue:
265, P. 111925 - 111925
Published: Aug. 6, 2024
This
study
presents
a
methodological
framework
for
assessing
the
energy
performance
of
Personal
Environmental
Control
Systems
(PECS),
aiming
to
address
existing
gaps
in
standardized
evaluation
approaches.
Initially,
systematic
approach
delineate
distinct
spatial
control
volumes
associated
with
PECS
is
presented,
facilitating
classification
and
comparison
various
system
types.
Utilizing
this
framework,
introduces
definitions
efficiency
effectiveness
specific
PECS,
providing
procedure
experimental
assessment
quantities
related
these
definitions.
To
validate
proposed
method
was
applied
an
illustrative
case
involving
two
under
varying
operational
conditions
–
heating
cooling.
The
results
provide
insights
into
evaluated
highlighting
framework's
applicability
their
efficiency.
underscores
importance
systematically
evaluating
performance,
offering
robust
methodology
that
can
guide
future
research
development
efforts
domain.
