czech technical university in prague faculty of civil engineering department of microenvironmental...

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Czech Technical University in Prague Faculty of Civil Engineering

Department of Microenvironmental and Building Services Engineering

Czech Technical University in Prague Faculty of Civil Engineering

Department of Microenvironmental and Building Services Engineering

Building Services Building Services Systems 20Systems 20

Building Services Building Services Systems 20Systems 20

Lecture 4Lecture 4Heat emmittersHeat emmitters

Lecture 4Lecture 4Heat emmittersHeat emmitters

Heat emittersHeat emitters

Fan convec tors N atura l

C onvec tors

B anks of P ipes O ff peak storage C olum ns R adiantpanels

P anels

R adiators

Heat emitters

ConvectorsConvectors

NaturalFan-convectorsFloorWall

                 

RadiatorsRadiators

Off-peak storageOff-peak storage

StaticStatic DynamicDynamic

ConvectorConvector Radiator Radiator

Heat emittersHeat emitters Design principlesDesign principles

Heating outputHeating output LocationLocation Covering - furnitureCovering - furniture Connection to the pipe systemConnection to the pipe system TypeType

HeaterHeater emitters emitters design design

Covering = changes in the outputCovering = changes in the output

100% 87%110%95%

100% 100% 90% 85%

Connection to the piping system

Low - temperature Low - temperature radiant heatingradiant heating

floor, wall and/or ceiling with floor, wall and/or ceiling with embedded pipes or el.wires in embedded pipes or el.wires in concrete slabconcrete slab Temperature distributionTemperature distribution

Underfloor heatingUnderfloor heating

History

Low - temperature Low - temperature radiant heatingradiant heating

Floor structureFloor structure

Insulating strip between wall and flooring

Finished flooringConcrete slab min 65mm

Thermal insulation20-80mm

Pipes

Humidity seal

Reinforcement

Supporting floor structure

Underfloor heating - Underfloor heating - structurestructure

TYP ATYP B

TYP C

Low - temperature Low - temperature radiant heatingradiant heating

Technical solutionTechnical solution Pipe layoutPipe layout

Low - temperature Low - temperature radiant heatingradiant heating

Output Output Limited surface temperature Limited surface temperature limited output limited output

cca 100 W.mcca 100 W.m-2 -2

Energy savings Energy savings Lower air temperature Lower air temperature lower heat losseslower heat losses

ControlControl Low temperature difference Low temperature difference autocontrol autocontrol

effecteffect

Underfloor heating - Underfloor heating - examplesexamples

Radiant panelsRadiant panels

Low temperatureLow temperature heaters max 110 °C (water, steam, heaters max 110 °C (water, steam,

el.power)el.power)

High temperatureHigh temperature dark - about 350°C - radiant tube heating dark - about 350°C - radiant tube heating

system (gas)system (gas) light - about 800 °C - flameless surface gas light - about 800 °C - flameless surface gas

combustioncombustion

Czech Technical University in Prague Faculty of Civil Engineering

Department of Microenvironmental and Building Services Engineering

Czech Technical University in Prague Faculty of Civil Engineering

Department of Microenvironmental and Building Services Engineering

www.korado.czwww.minib.czwww.rehau.nowww.jaga.cz

www.korado.czwww.minib.czwww.rehau.nowww.jaga.cz

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