WIRSBO“Wirsbo pePEX - An advanced Material for Underfloor Heating Applications”

• Aims

• Objectives

• Outcome

• Explain how underfloor heating worksExplain how underfloor heating works

• Examine advantages & disadvantages of various heating systemsExamine advantages & disadvantages of various heating systems

IntroductionIntroduction

• Provide solutions to common heating problemsProvide solutions to common heating problems

• Resolve factors affecting specificationResolve factors affecting specification

• Show how you and your clients can benefit from UFHShow how you and your clients can benefit from UFH

• Effect energy efficiency improvementsEffect energy efficiency improvements

How do modern heating systems How do modern heating systems work?work?

Ideal Htg

2.0m

0.2m

12 15 20 25 30

Underfloor

12 15 20 25 30 12 15 20 25 30 35 40 12 15 20 25 30 35 40 45 50

Temperature Distribution of Heating Systems

ºC

Basic principlesBasic principles

• Radiators Transfer heat from very small & very hot Transfer heat from very small & very hot

surfaces (75surfaces (7500C) to the room (20C) to the room (2000C).C). High rate of convection.High rate of convection.

• UFH• Transfers heat from a surface slightly warmer Transfers heat from a surface slightly warmer

than the room (29than the room (2900C to 20C to 2000C)C)• Very high rate of radiation. Very high rate of radiation. • Natural, comfortable warmth.Natural, comfortable warmth.

Modern Underfloor HeatingModern Underfloor Heating

• Mainly warm waterMainly warm water• High tech plastic pipe in or just below High tech plastic pipe in or just below

floorfloor• Water is 45-60Water is 45-60OOCC• Forms to suit most floor constructionsForms to suit most floor constructions• Well proven controlsWell proven controls• Economical to runEconomical to run• Reliable, long lasting Reliable, long lasting • Maintenance-freeMaintenance-free

Solid Floor ConstructionSolid Floor Construction

Pipe set in Pipe set in placeplace before screed is laid before screed is laid

Suspended Floor ConstructionSuspended Floor Construction

Cross-batten wooden suspended floorCross-batten wooden suspended floor

Floating Floor ConstructionFloating Floor Construction

Floor Cross SectionFloor Cross Section

S Plan layoutS Plan layout

Familiar TechnologyFamiliar Technology

20°c

How do Radiators Work?How do Radiators Work?

Stratification leads to higher temp. and thus high heat lossStratification leads to higher temp. and thus high heat loss

27°C 27°C 27°C

20°C 19°C

17°C

50°C

17°C 17°C

HIGH HEAT LOSS THROUGH WINDOWS

How does UFH Work?How does UFH Work?

Just like one big low temperature radiatorJust like one big low temperature radiator

27°C to 29°C 27°C to 29°C 27°C to 29°C

20°C 20°C 20°C

Energy Savings with Underfloor Energy Savings with Underfloor HeatingHeating

• No hot air in front of glass No hot air in front of glass == LessLess heatheat lossloss throughthrough windowwindow

• No hot air at ceiling level No hot air at ceiling level == LessLess heatheat lossloss throughthrough ceiling & wallceiling & wall

• Lower air temperature for same comfortLower air temperature for same comfort== Reduced number of air changes Reduced number of air changes

• Uses lower water temperature Uses lower water temperature = = LowerLower transmissiontransmission losseslosses

• Options to use non-fossil fuel heat sources Options to use non-fossil fuel heat sources and boilers in condensing modeand boilers in condensing mode

Advantages of UFHAdvantages of UFH

• Very comfortableVery comfortable• No ‘hot heads or cold feet’No ‘hot heads or cold feet’• Does not promote floor draughtsDoes not promote floor draughts• No drying of the airNo drying of the air• Reduced dust levelsReduced dust levels

• UnobtrusiveUnobtrusive• Walls left completely clearWalls left completely clear• Floors and walls are easier to cleanFloors and walls are easier to clean

Other Advantages of UFHOther Advantages of UFH

• QuietQuiet• No creaks and groans, especially in solid floorsNo creaks and groans, especially in solid floors

• SafeSafe

• No hot surfaces - important to HSE No hot surfaces - important to HSE • No sharp edges to cause injury No sharp edges to cause injury • This is the Ultimate low surface temperature radiatorThis is the Ultimate low surface temperature radiator• Nothing to vandalise Nothing to vandalise • (In Sweden only UFH is allowed, by law, in(In Sweden only UFH is allowed, by law, in

Children's nurseries)Children's nurseries)

ObservationObservation

Radiators were a great advance when the alternative Radiators were a great advance when the alternative was to have a open grate in every room ...was to have a open grate in every room ...

and now UFH is the ultimate radiatorand now UFH is the ultimate radiator

SummarySummary• Underfloor Heating today is:-Underfloor Heating today is:-

• Clean and ‘green’Clean and ‘green’• ComfortableComfortable• InvisibleInvisible• QuietQuiet• SafeSafe• Energy-efficientEnergy-efficient• Maintenance-freeMaintenance-free

UFH has come a long way, and is right for the UK too!UFH has come a long way, and is right for the UK too!

WHAT CANWHAT CAN

DO FOR YOU?DO FOR YOU?

We offer a complete packageWe offer a complete package

• QuotationQuotation• DesignDesign• InstallationInstallation• CommissioningCommissioning• Full system documentationFull system documentation• 25 year warranty25 year warranty• After Care SupportAfter Care Support

Your client will have the Your client will have the advantage of:advantage of:

• Running costs considerably lowerRunning costs considerably lower• Reduced heat loss at windows and Reduced heat loss at windows and

ceilingsceilings• Lower air temperature more Lower air temperature more

comfortcomfort• Lower water temperatureLower water temperature

What do we need from youWhat do we need from you• Design criteria and specificationDesign criteria and specification• Drawings – CAD formatDrawings – CAD format• Integration into your build programmeIntegration into your build programme• Unimpeded access to floor areas Unimpeded access to floor areas

(for a short time)(for a short time)• Systems need to be covered Systems need to be covered

immediately after installation to avoid immediately after installation to avoid damagedamage

• Communication – co-operationCommunication – co-operation

Wirsbo has the following Wirsbo has the following accreditation:accreditation:

• BBA Agrément Certificate (87/1799) for the full BBA Agrément Certificate (87/1799) for the full systemsystem

• ISO 9001 Quality Assured ISO 9001 Quality Assured

• ISO 14001 Environmentally AssuredISO 14001 Environmentally Assured

• WRAS ApprovalWRAS Approval

• BSRIA Approval – Market leaders in the UKBSRIA Approval – Market leaders in the UK

• DIN 16892 – Pipe manufacturing regulationDIN 16892 – Pipe manufacturing regulation

• 25 Year Written Warranty25 Year Written Warranty

• Industry leading accreditationIndustry leading accreditation