Air quality and ventilation: exploring solutions for healthy and sustainable urban environments in times of climate change
Results in Engineering,
Год журнала:
2024,
Номер
unknown, С. 103157 - 103157
Опубликована: Окт. 1, 2024
Язык: Английский
Rotating mesh framework and dynamic wind direction variability effects on building ventilation with large eddy simulation
Physics of Fluids,
Год журнала:
2025,
Номер
37(4)
Опубликована: Апрель 1, 2025
Natural
ventilation,
a
critical
passive
design
strategy
for
indoor
environmental
regulation
and
urban
pollution
mitigation,
relies
heavily
on
dynamic
wind
patterns.
However,
existing
studies
predominantly
focus
steady
or
averaged
directions,
often
overlooking
transient
effects
caused
by
time-varying
direction
fluctuations.
This
study
addresses
this
gap
proposing
novel
meshing
framework
integrated
into
large
eddy
simulation
in
computational
fluid
dynamics
simulations
to
investigate
how
time-dependent
variations
influence
natural
ventilation
efficiency
pollutant
dispersion
isolated
buildings.
The
model
divides
the
domain
zone
dynamically
rotating
zone,
enabling
realistic
variability
while
preserving
efficiency.
Validation
against
tunnel
experiments
confirmed
high
accuracy.
Results
indicate
that
even
minor
directional
fluctuations
(1°
amplitude)
reduce
rates
13.13%
compared
conditions,
whereas
larger
amplitudes
(40°)
exacerbate
retention,
with
relative
concentration
errors
exceeding
150%.
Frequency
(5–40
s
periods)
exhibited
negligible
impacts
amplitude-driven
effects.
Dynamic
fields
altered
airflow
suppressing
shear
layer
separation
forming
low-pressure
vortices,
which
disrupted
diffusion
pathways.
A
linear
regression
quantified
amplitude-dependent
decay,
offering
predictive
capabilities
scenarios.
These
findings
highlight
necessity
of
incorporating
short-term
models
enhance
building
dispersion.
proposed
establishes
scalable
methodology
design,
providing
physical
insights
optimize
patterns
under
variability.
Язык: Английский
Year-round energy-efficient multi-stage fresh air treatment system utilizing lake water as energy source
Renewable Energy,
Год журнала:
2025,
Номер
unknown, С. 123089 - 123089
Опубликована: Апрель 1, 2025
Язык: Английский
Improving Indoor Air Quality in a Higher-Education Institution Through Biophilic Solutions
Sustainability,
Год журнала:
2025,
Номер
17(11), С. 5041 - 5041
Опубликована: Май 30, 2025
Schools
are
vital
infrastructures
where
students
acquire
essential
skills
and
foster
social
values.
Indoor
air
quality
(IAQ)
is
of
paramount
importance
in
schools,
given
that
spend
a
considerable
amount
time
indoors.
This
study
examines
the
influence
natural
green
structure
(NGS)
on
IAQ
an
Eco-Campus
classroom.
The
classroom
with
NGS
was
compared
to
adjacent
without
NGS.
thermal
conditions
were
monitored,
including
temperature
(T)
relative
humidity
(RH),
as
well
indoor
pollutants,
carbon
dioxide
(CO2),
volatile
organic
compounds
(VOCs),
particulate
matter
(PM2.5
PM10).
findings
indicated
substantial
improvement
installed.
lends
support
incorporation
biophilic
solutions
sustainable
approaches
fostering
healthier
learning
environments,
which
turn
can
lead
improvements
student
performance
well-being.
Язык: Английский
Multi-objectives occupant-centric control of thermostats and natural ventilation systems in cold climate conditions using real-time occupant-related information
Building and Environment,
Год журнала:
2024,
Номер
263, С. 111882 - 111882
Опубликована: Июль 27, 2024
Язык: Английский
Bioclimatic strategies in existing multifamily buildings to achieve cities decarbonization goals: Potential and relevance for Catalonia climates
Cities,
Год журнала:
2024,
Номер
154, С. 105335 - 105335
Опубликована: Авг. 20, 2024
Язык: Английский
An Analysis of the Ventilation Efficiency of Various Configurations of Inlet and Outlet Vents in a Residential Building by CFD Simulation
Buildings,
Год журнала:
2024,
Номер
14(11), С. 3449 - 3449
Опубликована: Окт. 30, 2024
Residential
buildings
in
South
Korea
have
equipped
an
energy
recovery
ventilation
(ERV)
system
to
improve
efficiency
as
well
dilute
indoor
air
pollution.
While
most
studies
focused
on
the
of
exchange
or
performance
ERV
itself,
can
be
improved
by
proper
location
inlet
and
outlet
vents.
For
present
study,
vents
was
investigated
using
CFD
simulation.
By
varying
locations
vents,
airflow
distributions
age
were
assessed.
In
addition,
effectiveness
analyzed
mean
quantitatively.
As
a
result,
higher
observed
when
moved
center
plan
along
wall
additional
vent
installed
kitchen.
highest
obtained
located
wall.
Considering
economic
perspective,
it
is
recommended
locate
at
least
performance.
Язык: Английский
Application of Mixed-Mode Ventilation to Enhance Indoor Air Quality and Energy Efficiency in School Buildings
Energies,
Год журнала:
2024,
Номер
17(23), С. 6097 - 6097
Опубликована: Дек. 4, 2024
Indoor
air
quality
and
energy
efficiency
are
instrumental
aspects
of
school
facility
design
construction,
as
they
directly
affect
the
physical
well-being,
comfort,
academic
output
both
pupils
staff.
The
challenge
balancing
need
for
adequate
ventilation
to
enhance
indoor
with
goal
reducing
consumption
has
long
been
a
topic
debate.
implementation
mixed-mode
systems
automated
controls
presents
promising
solution
address
this
issue.
However,
comprehensive
literature
review
on
subject
is
still
missing.
To
gap,
examines
potential
application
attaining
improved
savings
without
compromising
thermal
comfort
in
educational
environments.
Mixed-mode
systems,
which
combine
natural
mechanical
ventilation,
provide
versatility
alternate
between
or
merge
methods
based
real-time
outdoor
environmental
conditions.
By
analyzing
empirical
studies,
case
theoretical
models,
investigates
efficacy
minimizing
use
enhancing
quality.
Essential
elements
such
operable
windows,
sensors,
sophisticated
control
technologies
evaluated
illustrate
how
dynamically
optimize
sustain
comfortable
healthy
climates.
This
paper
further
addresses
challenges
linked
including
complexities
necessity
climate-adaptive
strategies.
findings
suggest
that
can
considerably
lower
heating,
conditioning
usage,
ranging
from
20%
60%
across
various
climate
zones,
while
also
advanced
data-driven
In
conclusion,
offer
approach
buildings
achieve
effective
sacrificing
environment
Язык: Английский