6 research outputs found
Analysis and optimization of energy usage in Supermarkets
Get PDFThe thesis performed in this research is focused on a particular type of energy system, energy systems in supermarkets. As supermarkets are high-energy using buildings, their energy system optimization has been investigated in recent years, with the main focus in the refrigeration system, which can take up to 50% of the total energy of the supermarket. However, the complexity and interconnections of the different systems increase the difficulty of the task.
The aim of this work is to contribute in SuperSmart project, an EU project which main objective is to reduce the impact of the supermarket sector overall Europe, through the development of an ecolabel criteria. To simulate the energy use in supermarkets, CyberMart software is bring forward. This tool is used both to determine the parameters which have a higher impact in the supermarket energy system and perform energy representation based on those parameters. Finally, the design of the most energy efficient store is also presented.
According to CyberMart, some of the most determinant parameters in the supermarket energy system are refrigeration capacities, plug in cabinets used, lights power, heating system technologies used and whether the cabinets are covered or not. Using some of these parameters plus other important characteristics from the store, two energy representations are performed. The linear energy representation provides the increase or decrease of kWh per each parameter, enabling supermarkets owners to compare different parameters within the global system.
These representations, which distinguish between heat recovery and floating condensing technologies, conclude that the most important parameters in the global system are the temperature inside at winter and the refrigeration capacity. However, some unreasonable events appear, like the decline of electricity demand when the height of the building increases or the drop of heat demand with the rise of opening hours. These facts occur due to the high complexity of the global system, implying different connections between the sub-systems within CyberMart.
Concerning the most energy efficient store located in Stockholm, the obtained results show the most energy efficient supermarket is composed by CO2 refrigeration and heating systems, and a R410_A air conditioning system. The optimal electricity use of each establishment size from large to small area is 382, 394, 390 and 281 kWh/m2*year respectively, with the highest values obtained in Supermarkets and Discount stores, due to their higher rate of refrigeration power per store area
Design of an efficient and renewable heating system of a family house
Get PDFThe
aim
of
this
project
is
designing
a
heating
system
in
a
family
house
in
order
to
achieve
the
satisfaction
of
the
owners.
This
heating
system
will
be
designed
to
provide
as
much
energy
as
possible
in
a
renewable
way.
The
work
of
the
project
is
going
to
be
divided
in
different
parts:
first
of
all
knowing
everything
about
the
building,
the
location,
the
dimensions,
the
number
of
rooms
it
has
and
also
about
the
features
of
the
weather
in
the
place
where
is
located,
Mallorca.
In
this
point
will
be
included
the
calculations
of
the
heat
transfer
through
the
walls,
the
windows
and
the
roof
and
heat
that
the
house
needs
in
order
to
provide
users
with
the
most
optimal
conditions
of
comfort.
The
second
and
the
most
important
part
of
the
project
is
the
designing
of
the
system.
In
this
part
all
the
features
of
the
system
will
be
described,
as
well
as
the
different
parts
it
has
and
the
way
it
works.
The
first
think
treated
is
the
different
elements
that
make
up
the
system
and
the
function
they
have.
Then
the
calculation
designs
are
made,
to
know
how
many
panels,
meters
of
floor
heating,
the
system
will
need.
Finally
it
is
made
a
description
of
the
way
the
controlling
temperature
system
works,
explaining
how
the
circuits
are
distributed,
the
processes
the
water
follows...
In
this
last
point
it
is
also
said
the
importance
to
design
a
complementary
system
so
that
it
can
help
the
main
in
cloudy/foggy
days
or
in
really
cold
days.
Finally,
the
last
part
of
the
project
includes
the
explanation
of
a
secondary
system
that
is
used
to
take
advantage
of
the
energy
from
the
solar
panels
in
summer.
In
conclusion
in
this
project
it
is
designed
a
controlling
temperature
system
for
a
house
in
Mallorca,
using
the
solar
energy
as
the
main
energy
source.
Other
systems
like
the
complementary
one
for
heating
the
water
and
the
ones
that
will
use
the
energy
in
summer
are
described,
to
help
the
house
be
more
self-‐
sufficient
and
make
the
living
in
it
easier
Analysis and optimization of energy usage in Supermarkets
No full textThe thesis performed in this research is focused on a particular type of energy system, energy systems in supermarkets. As supermarkets are high-energy using buildings, their energy system optimization has been investigated in recent years, with the main focus in the refrigeration system, which can take up to 50% of the total energy of the supermarket. However, the complexity and interconnections of the different systems increase the difficulty of the task.
The aim of this work is to contribute in SuperSmart project, an EU project which main objective is to reduce the impact of the supermarket sector overall Europe, through the development of an ecolabel criteria. To simulate the energy use in supermarkets, CyberMart software is bring forward. This tool is used both to determine the parameters which have a higher impact in the supermarket energy system and perform energy representation based on those parameters. Finally, the design of the most energy efficient store is also presented.
According to CyberMart, some of the most determinant parameters in the supermarket energy system are refrigeration capacities, plug in cabinets used, lights power, heating system technologies used and whether the cabinets are covered or not. Using some of these parameters plus other important characteristics from the store, two energy representations are performed. The linear energy representation provides the increase or decrease of kWh per each parameter, enabling supermarkets owners to compare different parameters within the global system.
These representations, which distinguish between heat recovery and floating condensing technologies, conclude that the most important parameters in the global system are the temperature inside at winter and the refrigeration capacity. However, some unreasonable events appear, like the decline of electricity demand when the height of the building increases or the drop of heat demand with the rise of opening hours. These facts occur due to the high complexity of the global system, implying different connections between the sub-systems within CyberMart.
Concerning the most energy efficient store located in Stockholm, the obtained results show the most energy efficient supermarket is composed by CO2 refrigeration and heating systems, and a R410_A air conditioning system. The optimal electricity use of each establishment size from large to small area is 382, 394, 390 and 281 kWh/m2*year respectively, with the highest values obtained in Supermarkets and Discount stores, due to their higher rate of refrigeration power per store area
Analysis and optimization of energy usage in Supermarkets
No full textThe thesis performed in this research is focused on a particular type of energy system, energy systems in supermarkets. As supermarkets are high-energy using buildings, their energy system optimization has been investigated in recent years, with the main focus in the refrigeration system, which can take up to 50% of the total energy of the supermarket. However, the complexity and interconnections of the different systems increase the difficulty of the task.
The aim of this work is to contribute in SuperSmart project, an EU project which main objective is to reduce the impact of the supermarket sector overall Europe, through the development of an ecolabel criteria. To simulate the energy use in supermarkets, CyberMart software is bring forward. This tool is used both to determine the parameters which have a higher impact in the supermarket energy system and perform energy representation based on those parameters. Finally, the design of the most energy efficient store is also presented.
According to CyberMart, some of the most determinant parameters in the supermarket energy system are refrigeration capacities, plug in cabinets used, lights power, heating system technologies used and whether the cabinets are covered or not. Using some of these parameters plus other important characteristics from the store, two energy representations are performed. The linear energy representation provides the increase or decrease of kWh per each parameter, enabling supermarkets owners to compare different parameters within the global system.
These representations, which distinguish between heat recovery and floating condensing technologies, conclude that the most important parameters in the global system are the temperature inside at winter and the refrigeration capacity. However, some unreasonable events appear, like the decline of electricity demand when the height of the building increases or the drop of heat demand with the rise of opening hours. These facts occur due to the high complexity of the global system, implying different connections between the sub-systems within CyberMart.
Concerning the most energy efficient store located in Stockholm, the obtained results show the most energy efficient supermarket is composed by CO2 refrigeration and heating systems, and a R410_A air conditioning system. The optimal electricity use of each establishment size from large to small area is 382, 394, 390 and 281 kWh/m2*year respectively, with the highest values obtained in Supermarkets and Discount stores, due to their higher rate of refrigeration power per store area
Design of an efficient and renewable heating system of a family house
No full textThe
aim
of
this
project
is
designing
a
heating
system
in
a
family
house
in
order
to
achieve
the
satisfaction
of
the
owners.
This
heating
system
will
be
designed
to
provide
as
much
energy
as
possible
in
a
renewable
way.
The
work
of
the
project
is
going
to
be
divided
in
different
parts:
first
of
all
knowing
everything
about
the
building,
the
location,
the
dimensions,
the
number
of
rooms
it
has
and
also
about
the
features
of
the
weather
in
the
place
where
is
located,
Mallorca.
In
this
point
will
be
included
the
calculations
of
the
heat
transfer
through
the
walls,
the
windows
and
the
roof
and
heat
that
the
house
needs
in
order
to
provide
users
with
the
most
optimal
conditions
of
comfort.
The
second
and
the
most
important
part
of
the
project
is
the
designing
of
the
system.
In
this
part
all
the
features
of
the
system
will
be
described,
as
well
as
the
different
parts
it
has
and
the
way
it
works.
The
first
think
treated
is
the
different
elements
that
make
up
the
system
and
the
function
they
have.
Then
the
calculation
designs
are
made,
to
know
how
many
panels,
meters
of
floor
heating,
the
system
will
need.
Finally
it
is
made
a
description
of
the
way
the
controlling
temperature
system
works,
explaining
how
the
circuits
are
distributed,
the
processes
the
water
follows...
In
this
last
point
it
is
also
said
the
importance
to
design
a
complementary
system
so
that
it
can
help
the
main
in
cloudy/foggy
days
or
in
really
cold
days.
Finally,
the
last
part
of
the
project
includes
the
explanation
of
a
secondary
system
that
is
used
to
take
advantage
of
the
energy
from
the
solar
panels
in
summer.
In
conclusion
in
this
project
it
is
designed
a
controlling
temperature
system
for
a
house
in
Mallorca,
using
the
solar
energy
as
the
main
energy
source.
Other
systems
like
the
complementary
one
for
heating
the
water
and
the
ones
that
will
use
the
energy
in
summer
are
described,
to
help
the
house
be
more
self-‐
sufficient
and
make
the
living
in
it
easier
Design of an efficient and renewable heating system of a family house
No full textThe
aim
of
this
project
is
designing
a
heating
system
in
a
family
house
in
order
to
achieve
the
satisfaction
of
the
owners.
This
heating
system
will
be
designed
to
provide
as
much
energy
as
possible
in
a
renewable
way.
The
work
of
the
project
is
going
to
be
divided
in
different
parts:
first
of
all
knowing
everything
about
the
building,
the
location,
the
dimensions,
the
number
of
rooms
it
has
and
also
about
the
features
of
the
weather
in
the
place
where
is
located,
Mallorca.
In
this
point
will
be
included
the
calculations
of
the
heat
transfer
through
the
walls,
the
windows
and
the
roof
and
heat
that
the
house
needs
in
order
to
provide
users
with
the
most
optimal
conditions
of
comfort.
The
second
and
the
most
important
part
of
the
project
is
the
designing
of
the
system.
In
this
part
all
the
features
of
the
system
will
be
described,
as
well
as
the
different
parts
it
has
and
the
way
it
works.
The
first
think
treated
is
the
different
elements
that
make
up
the
system
and
the
function
they
have.
Then
the
calculation
designs
are
made,
to
know
how
many
panels,
meters
of
floor
heating,
the
system
will
need.
Finally
it
is
made
a
description
of
the
way
the
controlling
temperature
system
works,
explaining
how
the
circuits
are
distributed,
the
processes
the
water
follows...
In
this
last
point
it
is
also
said
the
importance
to
design
a
complementary
system
so
that
it
can
help
the
main
in
cloudy/foggy
days
or
in
really
cold
days.
Finally,
the
last
part
of
the
project
includes
the
explanation
of
a
secondary
system
that
is
used
to
take
advantage
of
the
energy
from
the
solar
panels
in
summer.
In
conclusion
in
this
project
it
is
designed
a
controlling
temperature
system
for
a
house
in
Mallorca,
using
the
solar
energy
as
the
main
energy
source.
Other
systems
like
the
complementary
one
for
heating
the
water
and
the
ones
that
will
use
the
energy
in
summer
are
described,
to
help
the
house
be
more
self-‐
sufficient
and
make
the
living
in
it
easier
