Improved energy efficiency with surface heating and coolingLars
NielsenIlari Aho
Uponor Group
REHVA Supporters SeminarAmsterdam, May 14, 2009
*Uponor*
Presentation outlineUponor in briefThe EPBD and its relation to
Uponor solutionsThe Exergy concept and LowEx solutionsRadiant
heating & cooling solutionsCase Study ZUBSummary and
Conclusions
*Uponor*
Uponor key facts: Company Leading provider of plumbing &
indoor climate systems in Europe and North AmericaMarket leader in
infrastructure pipe systems in the Nordic countriesNet sales for
2008: EUR 950 millionOperations in 30 countries with 11 factories
in 6 countriesPersonnel: ca 3,800 personsListed in NASDAQ OMX
Nordic in Helsinki
Chart5
0.3171369837
0.3417118296
0.2189310409
0.1222201458
Net sales 2008 by region
Nordic 34 %
Central Europe32 %
North America12 %
Europe- WES22 %
Sheet1
Sheet1
0.3171369837
0.3417118296
0.2189310409
0.1222201458
Net sales 2008 by region
Europe- WES22 %
North America12 %
Central Europe32 %
Nordics34 %
Sheet2
Sheet3
*Uponor*
Response measures to the EPBD recastEPBD Main Pillars:Energy
performance requirements for new buildingsEnergy performance
requirements for existing buildings that undergo major
renovationEnergy performance certificatesInspection of heating and
air-conditioning systemsPreference to:Decentralised energy supply
systems based on renewable energyCogenerationDistrict or block
heating or coolingHeat pumpsLow Exergy System DesignRadiant Heating
& Cooling SolutionsHigh energy efficiency improvement potential
(5-50%)Low temp. heating & high temp. cooling optimal for heat
pumps, district heating etc.Optimal utilisation of free and
renewable energy sourcesSuperior indoor comfort!
*Uponor*
The Exergy ConceptExergy is the ability of an energy flow to do
workExergy combines the quality and quantity of energyExergy
analysis is established practice in power plant optimisation,
industrial ecology, etcFirst applications to the building sector in
the 1990sExergy in practice:Match the quality of supplied energy to
the quality needs of the demand sideLow temperature heating and
high temperature cooling (Rehva guidebook no. 7)Optimal utilisation
of low quality energy in district heating and district cooling
systems
*Uponor*
Integrated water based systems ensure Exergy performanceLowEx
Supply structures District Heating, District
CoolingHigh-performance buildings Hydronic Heating & Cooling
system
*Uponor*
Uponor Indoor Climate SolutionsInvisible ComfortUnder floor
heating and cooling systemsThermally Active Building Systems
(TABS)Cooling panels and surface cooling elementsRadiant heating
and cooling controlsPre-insulated piping systemsGround energy
collector systemsVentilation ducting
*Uponor*
Radiant cooling solutionsCooling panelsBoth new build and
refurbishmentOffice, commercial and public buildings
Thermally Active Building SystemsOffice, commercial and public
buildingsFor new build only
Floor coolingOffice, commercial, public and residential
buildingsMainly for new buildCapillary matsOffice, commercial,
public and residential buildingsBoth new build and
refurbishment
*Uponor*
Thermally Activated Building Structuresstores and releases
effect when needed
*Uponor*
Low temperature heating yields optimal performance of heat pump
solutionsThe EPBD recast requires heat pumps to be considered for
new buildingsRadiant heating and cooling systems ensures optimal
heat pump performance with supply temperatures close to ambientThe
Seasonal Performance Factor depends on the COP and the entire
heating systemA rule of thumb for heating is that 1C higher supply
flow temperature causes up to 2.5% higher energy consumption per
yea
*Uponor*
Centre for Sustainable Building (ZUB), Kassel, GermanyThe
construction of the ZUB office, research and exhibition building is
an example of what today's state of the art of technology for low
energy demand and sustainable building can look like. Planned as an
example of a low energy building, the new office of about 1300 m is
attached to an existing preserved building and consists of three
different main parts:one for exhibitions and events, one for
offices, and an experimental part for different kinds of research
in innovative building techniques and building services.
A special focus was given to the realisation of a sustainable
cooling concept, using a renewable energy source: the coolness of
the ground underneath the building.
*Uponor*
The ZUB energy conceptMinimised thermal losses during heating
season and heat gains during cooling seasonArchitectural designHigh
insulation levelsSolar gain controlLowEx system solution25-40 C
supply temperature for heating16-20 C supply temperature for
coolingdistrict heating return line utilisation and ground-coupled
cooling
*Uponor*
Summary on Low Exergy systemsLowEx concepts and integrated
design provideindoor comfort and reliability for end-usersenergy
and cost performanceproductivity: more from lessImplementation
requiresa holistic and multidisciplinary approach through project
planning, design, construction and commissioningnew approaches,
skills and an open mindset from HVAC design but it doesnt
requirecompletely new technologieshigh upfront investments
*Uponor*
ConclusionsRadiant heating & cooling solutions providesgood
potential for improving energy performance in response to the
EPBDoptimal operating conditions for renewable energy sources high
comfortA total system approach is requiredfor optimal performance
of the building HVAC systeminterconnected water-based systems is a
key element for overall performanceSolutions for energy renovation
are requiredcost efficient Low Exergy renovation solutions are
required for the existing building massradiant system can provide
part of the response to increased future cooling loads
