Climate
variability
and
staff
mobility
have
exacerbated
the
vulnerability
of
indoor
environment,
which
calls
for
air-conditioning
units
can
accommodate
active
regulation
demand
changing
heat
humidity
loads.
The
identification
refrigerant
constitutes
an
essential
sector
system
design.
A
composition-adjustable
dual
cooling
source
(CADCS)
chiller
has
been
proposed
utilizing
characteristics
inefficient
condensation
non-azeotropic
mixture.
Separated
flows
working
fluid
with
flexible
mass
fraction
flow
rate
respectively
treat
waste
moisture.
Multi-criteria
screening
mechanism
is
established
from
aspect
application
field,
environmental
impact,
cycle
architecture
adaptability,
liquid
separation
potential,
pre-selects
R32/isobutane,
R32/R1234ze(E),
R32/R1234yf,
propane/isobutane
propane/R1234ze(E)
as
candidates.
Thermodynamic
performance
optimization
conducted
on
CADCS
basic
(BDCS)
under
design
off-design
conditions.
Propane/isobutane
outperforms
all
candidates
at
a
0.5:0.5
characterized
by
obvious
temperature
glide
close
to
change
transfer
medium.
maximum
coefficient
(COP)
reaches
5.2
BDCS
4.42
during
vapor
quality
0.436
cycle.
exergy
loss
evaporator
reduced
17.1%-73.7%
while
efficiency
improved
3%-59.7%
due
match
refinement
in
charge
be
saved
5.54%-15%.
dynamically
address
load
variation
employing
composition
adjustment.
accumulating
demands
lower
separation,
moisture
barely
exerts
effect.
Moreover,
effect
subcooling
degree
analyzed
suggested
1°C.
promising
prospect
dynamic
treatment
thermal
room
its
function
transfer.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 30, 2024
The
rising
sentiment
challenges
of
the
metropolitan
residents
may
be
attributed
to
extreme
temperatures.
However,
nationwide
real-time
empirical
studies
that
examine
this
claim
are
rare.
In
research,
we
construct
a
daily
temperature
index
and
metric
using
geotagged
posts
on
one
China's
largest
social
media
sites,
Weibo,
verify
hypothesis.
We
find
temperatures
causally
decrease
individuals'
sentiment,
extremely
low
more
than
high
temperature.
Heterogeneity
analyses
reveal
individuals
living
in
levels
PM2.5,
existing
new
COVID-19
diagnoses
low-disposable
income
cities
workdays
vulnerable
impact
sentiment.
More
importantly,
results
also
demonstrate
adverse
effects
minor
for
people
northern
with
breezes.
Finally,
estimate
one-standard
increase
(low)
temperature,
decreases
by
approximately
0.161
(0.272)
units.
Employing
monitor
public
can
assist
policymakers
developing
data-driven
evidence-based
policies
alleviate
impacts
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(50), P. 21978 - 21988
Published: Dec. 5, 2024
Environmental
factors
are
important
exposures
that
trigger
acute
coronary
syndrome
(ACS)
onset.
However,
the
interactive
and
joint
associations
of
multiple
on
ACS
onset
remain
unknown.
A
time-stratified
case-crossover
study
was
conducted
including
1,292,219
patients
who
were
selected
from
1,895
districts/counties
across
China
during
2015-2020.
The
conditions
included
ST-segment-elevation
myocardial
infarction
(STEMI),
non-ST-segment-elevation
(NSTEMI),
unstable
angina
(UA).
Conditional
logistic
regression
models
applied
to
estimate
particulate
matter
with
an
aerodynamic
diameter
≤2.5
μm
(PM2.5)
temperature
(TM)
risks
increased
by
0.38%
for
each
10
μg/m3
increment
in
PM2.5
concentration,
inverse
U-shaped
curve
TM
risk
observed.
greater
colder
days.
jointly
attributable
fractions
(AF)
nonoptimal
9.93%
all
patients,
10.31%
females,
12.91%
aged
≥65
years,
17.54%
NSTEMI
12.43%
Southern
China.
This
suggested
short-term
ambient
moderate
cold
may
substantially
increase
ACS.
Furthermore,
there
synergistic
interactions
among
higher
lower
peaks
