“In the field of infrastructure for waste handling,
in many cities today, refuse is simply collected
by waste trucks. Instead, by encouraging
households to separate their rubbish into
different coloured bags and then using a
pneumatic system, refuse can be mechanically
sorted at the collection point before entering
different recycling compartments.
“In Stockholm, we will use recycled waste to
produce biogas for running more vehicles.
Today, for every 100 people that use the toilet,
this produces enough waste to drive one car.
Yet if we collect the household waste, we only
need 50 people to fuel one car. If we combine
such steps with fuel efficiency, the waste of only
25 people may be needed. Through combining
systems where waste becomes fuel and
looking outside the box, we can find the
solutions that are part of our current
infrastructure,” Landahl said.
“Another area is open district heating, which is
a new business model. Many ICT companies,
for example Google and Facebook, place their
servers in the north of Sweden because of the
cool air. Yet one of the results of the now
warmer environment is attracting mosquitoes.
However, if you could sell the excess heat to
district heating companies that would buy it at
the same price that they are producing heat for,
a new business could be formed. Consequently,
instead of attracting mosquitoes, it would be
heating the homes and hot water of Stockholm
citizens – this makes more sense. There are
many cities that have a lot of waste heat,
especially in the eastern parts of Europe where
they have to renew their district heating
systems, and this could be a viable option for
using the waste heat from industries, instead
of using coal.”
Sustainable urban mobility
The final area of interest is urban mobility. The
project aims to realise: sustainable delivery,
smart traffic management, alternative fuel-
driven vehicles, and smart mobility solutions.
Landahl explained further: “On the mobility side,
we are working closely with finding alternatives
to the private car, for example car sharing, and
the better delivery of goods. Citizens are buying
more and more on the internet, and this project
is looking to help bring deliveries directly to the
staircases of residents’ homes, where there will
enhancing urban mobility, and integrating renewable energy sources
into the power network.
Low energy districts
As part of the energy area of action, the project aims for smart building
shell refurbishment, smart building logistics, smart energy-saving
tenants, and smart local electricity management, as Landahl explained:
“Many cities have growing populations with urbanisation: this is still
happening in Europe, but other parts of the world are witnessing a greater
pace. We need to create dwellings for a growing population, as well as
renew existing dwellings for new needs, for example smaller families or
elderly people that have problems with movement.
“With a big need for renovating existing buildings, this is a wonderful
opportunity for increasing energy efficiency and reducing costs – energy
efficiency makes sense from an economic point of view. One example is
lifts – lifts use more energy for lighting than for movement. Consequently,
putting in a sensor and controlling the light in the lift as to when a person
enters and exits saves a lot of energy. If this information is then passed
back to the tenants in their apartments, you can help them to behave in
better ways, reducing their energy needs.”
The second area of interest in the GrowSmarter project regards the
integration of infrastructures and seeks to establish smart street lighting,
waste heat recovery, smart waste collection, and Big Data management.
Landahl gave further details.
“Another area of interest is infrastructure for lighting and
communication – when you move from 3G to 4G and 5G on mobile
phones, there are shorter wavelengths. When you have shorter
wavelengths, you need to have more densely located transmission
poles. Through using the lamp posts as a place for transmitters, as
well as controlling the light bulbs and dimming them on cycle paths
when no-one is cycling, many measures can be implemented, bringing
together communications and lighting.
I S S U E S E V E N
H O R I Z O N 2 0 2 0 P R O J E C T S : P O R TA Lwww.horizon2020projects.com
S O C I E TA L C H A L L E N G E S : E N E R G Y
Realising smart energy
solutions in lifts is one
of the project’s goals