Case Studies in Thermal Engineering,
Год журнала:
2023,
Номер
53, С. 103784 - 103784
Опубликована: Ноя. 25, 2023
The
increasing
heating
demand
calls
for
a
correspondingly
augmented
capacity
of
the
primary
network.
However,
due
to
restriction
existing
pipes,
can
be
finitely
increased.
Therefore,
based
on
organic
Rankine
cycle
(ORC)
and
vapor
compression
(VCC),
novel
thermal
station
is
proposed
realize
self-augmented
capacity.
Based
laws
thermodynamics,
mathematical
model
constructed,
dynamic
performances
power
generation
are
analyzed.
Results
show
that
supply
water
temperature
network
greatly
influences
performance.
self-sufficient
electricity
achieve
approximately
2000
hours,
accounting
61.70%
period.
Additionally,
flexibly
reduce
return
20
°C,
thereby
achieving
rate
reach
53.56%.
demonstrates
excellent
capacity,
which
provides
new
path
satisfying
ever-increasing
demand.
Energy Conversion and Management X,
Год журнала:
2023,
Номер
20, С. 100439 - 100439
Опубликована: Авг. 18, 2023
This
paper
introduces
an
exergy-based
optimization
model
for
radiant
heating
or
cooling
panels
coupled
with
heat
pumps
minimum
carbon
dioxide
emissions
responsibility.
The
general
idea
that
there
exists
optimum
tube
spacing
in
emission
responsibility
terms
of
simple
life-cycle
analysis
and
the
first
law
thermodynamics
is
cahllenged.
Using
Rational
Exergy
Management
Model,
it
shown
a
real
unavailable
according
to
second
without
using
boilers
temperature
peaking
chillers
cooling.
It
hypothesized
use
temperature-adjusting
not
exergy-optimum
choice.
Through
twelve
sets
constraints,
identified
this
paper,
potential
optimality
conditions
concerning
increase
embodiments
panel
material
labor
respect
narrover
versus
coefficient
performance
pump,
thus
decrease
operational
emissions,
lies
outside
feasible
design
range.
also
reminds
destroy
part
high
unit
exergy
electrical
power
demand
by
generating
only
low-exergy
thermal
energy.
further
delegating
solar
photo-voltaic
supply
as
well
provides
optimal
solutions
both
pane
cooling,
enabling
wide
low-enthalpy
energy
sources.
Three
case
studies
are
presented.
Case
1:
Hydronic
floor
temperature-peaking
pump.
responsible
highest
among
other
cases.
+0.095
kg
CO2/kW-hexergy
delivered
per
area.
2:
Oversized
closer
+0.035
3-a:
Heat-piped
photo-voltaic-thermal
pipes.
has
negative
-0.010
delivered.
3-b:
ceiling
option
3-a.
+0.0010
sensible
Results
show
negative-carbon
may
be
achieved
roots
available
spacing.
Optimal
spacings
exist.
