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the new energy efficient concepts developed
by Rautakesko and its partners.
“K-rauta Lahti's air tightness value was
0.4 1/h and K-rauta Uppsala's was 0.2 1/h.
These are very good results, because values
between 0–1 on the scale for one-family
houses, for example, mean 'very tight', those
between 2–5 are 'normal' and over 10 means
'very leaky',” says Rautakesko's Building
Manager Petri Mörk.
STORE REFRIGERATION
EqUIPMENT MAKES USE OF
CARBON DIOxIDE
The cooling of chest freezers and other
refrigeration equipment generates condensation
heat which can be used for heating.
The condensation heat from cooling units is
recovered in nearly all K-food stores. These
stores only need additional heat energy in
very low sub-zero temperatures.
Nowadays, increasingly many K-food
stores save energy also by using carbon
dioxide recovered from industry processes
as refrigerant.
“Recovered carbon dioxide is a safe refrigerant
and it does not deplete the ozone layer
like freons, which were used earlier but are
forbidden today. The stores using carbon
dioxide as refrigerant consume 30% less
heat energy than stores using other refrigerants,”
says Maintenance Manager Jari
Pihlajamaa of Kesko Food.
GROUND HEAT AS A SOURCE OF
HEAT IN ONE-FAMILy HOUSES
AND SHOPPING CENTRES
In recent years, ground heat pumps have
become increasingly popular as heating
systems. In 2011, ground heat was chosen
for some 45% of new buildings. Ground
heat pumps utilise the solar energy stored
just beneath the ground surface or water
systems.
K-rauta displayed ground heating and
other housing solutions which save energy
at its stand at the Housing Fair in Kokkola
in summer 2011.
Eco point pilot also accepts
plastic packaging
The waste legislation to be enforced at the beginning of May
2012 will change producers' liability for packaging and set
new requirements on the organisation of packaging recovery
by consumers. Kesko Food is participating in the Eco
Point Pilot research project on household waste run by the
packaging producer communities, the trading sector and
municipal waste treatment plants from January 2012 until
August-September 2012.
Five K-food stores in the Tampere and Kuopio areas are
involved in the project. The project is aimed at establishing
ClIMaTE CHaNgE
The ongoing climate change, which is the result of human activity, is primarily
caused by the increasing amount of greenhouse gases, especially carbon
dioxide (CO 2 ), in the atmosphere. If emissions continue to grow at the current
rate, the accelerating greenhouse effect will raise the global average temperature
by approximately 2–6 degrees by the end of the century. About one third
of emissions are produced by housing, one third by transport and the rest by
food and other consumer products.
Source: The Finnish Meteorological Institute, the Finnish Environment Institute
(SYKE).
“Residents of one-family houses are very
familiar with ground heat by now. It was
in record demand in 2011. Hybrid heating
solutions and solar energy in particular are
expected to become increasingly popular,”
says Sales Manager Vesa Saarenheimo of
Rautakesko.
A ground heating system was adopted
at the Veturi shopping centre in Kouvola
already at the construction stage. Half of the
cooling and heating power of the shopping
centre is derived from the ground. Veturi
also uses a carbon dioxide system for the
store refrigeration units.
“In the summer, Veturi is cooled with
ground cooling and, in the winter, the same
holes convey ground heat. The shopping
centre only needs district heat in very low
sub-zero temperatures. Veturi is situated on
a rocky, 14-hectare site with yard areas sufficient
for accommodating about 130 cooling/
heating wells. This gave us an opportunity
to adapt new technologies to our store site
construction. Not only does the shopping
centre benefit from them, but it also gives us
useful information for our future projects,
says Building Contractor Manager Seppo
Kemppainen of Kesko Food.
Read more about Veturi on page 17.
ClIMaTE CHaNgE WORK
STORES ENHANCE THEIR ENERGy
CONSUMPTION IN MANy WAyS
Energy management and energy efficiency
are emphasised in K-stores by means of
maintenance operations and continuous
monitoring conducted jointly by retailers.
The store site maintenance organisation
has been trained for effective energy
management.
The biggest energy savings in stores are
achieved by providing chest freezers with
lids, by ensuring correct use of technical
systems and by using LED illuminated signs.
The refrigeration equipment of all new
K-food stores has lids and doors. The total
length of lids and doors on K-food stores’
refrigeration equipment is nearly seven
kilometres.
In 2011, K-food stores added doors to
their juice and dairy cabinets. K-citymarket
Hämeensaari, opened in early September,
was one of the first stores to have doors on
dairy cabinets.
“We are very satisfied with our dairy cabinets
with doors. Protecting the environment
also saves money. The annual saving in electricity
achieved by this is about 30% compared
to not having doors on the cabinets.
An even temperature enabled by doors also
a recovery network and
an operating model
for discarded consumer
packaging which would be efficient in respect of the
environment and costs and fulfil the requirements of the new
waste legislation.
Eco Point Pilot encourages customers to return their
sorted household waste to the eco points at stores during
shopping trips. In addition, the pilot point also accepts consumers'
plastic packaging. The eco points will continue to
collect other sorts of waste, such as cardboard, glass and
metal, as before.
Kesko Corporate Responsibility Report 2011 25