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EMIRATES PREINSULATEDPIPES INDUSTRIES LLC

www.eppi.ae

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Using of Preinsulated PipingSystem will:

Reduce Heat Transfer

Reduce Size of Chiller Used

Reduce Energy Consumption

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Preinsulated Piping Systems:

A preinsulated piping system is a factoryA preinsulated piping system is a factory

preinsulated, prefabricated pipe systempreinsulated, prefabricated pipe systemconsisting of:consisting of:

PIP

Core Insulation Casing

Steel HDPEPE100

Other PUR HDPE GRP Other

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PIP

Insulation Casing

PUR HDPE

Extruded High Density PolyethyleneExtruded High Density Polyethylene

UV ResistantUV Resistant

HDPE with Carbon Black HDPE without Carbon Black

UVUV

Minimum Density of 950 Kg/mMinimum Density of 950 Kg/m33

Tensile Strength of 25 MPaTensile Strength of 25 MPa

Rigid, ClosedRigid, Closed--Cell, CFC Free PolyurethaneCell, CFC Free Polyurethane

Density of 48Density of 48 60 Kg/m60 Kg/m33

Thermal Conductivity of 0.03 W/m.KThermal Conductivity of 0.03 W/m.K

Operating Temperature is betweenOperating Temperature is between --17 to +12017 to +120 CC

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Core PipeCore Pipe

Core Pipe

Carbon SteelHDPEPE100

SMLS ERW SAW

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Carbon Steel

SMLS ERW SAW

Most commonly used/specified systemMost commonly used/specified system

SeamlessSeamless normally for diameters below 4normally for diameters below 4

ERWERW for diameters 4for diameters 4 2424

SAWSAW for diameters > 24for diameters > 24, Longitudinally or Spirally welded, Longitudinally or Spirally welded

Conforming to ASTM A53 / API 5LConforming to ASTM A53 / API 5L

Standard Wall Thickness for diameters up to 32Standard Wall Thickness for diameters up to 32 -- inclusiveinclusive

Extra Strong Wall Thickness for diameters larger than 32Extra Strong Wall Thickness for diameters larger than 32

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PE 100

New Trend in the UAE MarketNew Trend in the UAE Market

Pioneered byPioneered by TabreedTabreed since the year 2000, others aresince the year 2000, others arefollowingfollowing

Technology is developing: PE63Technology is developing: PE63 PE80PE80 PE100PE100 PE110PE110

HDPE is manufactured locallyHDPE is manufactured locally

Made in UAE!Made in UAE!

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PE 100

ADVANTAGES

-- More economical than steel for diameters 20More economical than steel for diameters 20 & below& below

-- FlexibleFlexible can accommodate small angular changescan accommodate small angular changes

-- Lower Thermal coefficient than carbon steel material whichLower Thermal coefficient than carbon steel material whichresults in less insulation thicknessresults in less insulation thickness

-- Can be supplied in 100Can be supplied in 100--150m rolls for diameters up to 110mm150m rolls for diameters up to 110mm

-- Lower friction coefficient than steel pipesLower friction coefficient than steel pipes

-- Corrosion free, Inert to most chemicalsCorrosion free, Inert to most chemicals

-- HDPE has a design life of 50 yearsHDPE has a design life of 50 years

-- Lighter weight, easier damage repairLighter weight, easier damage repair

-- Easier to flush the system when installation is completedEasier to flush the system when installation is completed

-- No scale build up on internal pipe wall when the chilled waterNo scale build up on internal pipe wall when the chilled wateris runningis running

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PE 100

DISADVANTAGES

Large diameters (more than 500mm) may not beLarge diameters (more than 500mm) may not be

economical when compared to steeleconomical when compared to steel

Lack of large diameter fittingsLack of large diameter fittings

Site welding of large diameters is not easySite welding of large diameters is not easyunavailability of welding machines and/or experiencedunavailability of welding machines and/or experiencedcontractorscontractors

Verification of site weld integrity is not accurate as inVerification of site weld integrity is not accurate as insteel (NDT: RT & UT)steel (NDT: RT & UT)

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Heat Transfer ComparisonHeat Transfer ComparisonThe rate of heat flow through three concentric cylinders can beThe rate of heat flow through three concentric cylinders can be expressedexpressed

with the following formula:with the following formula:

j

rji

j

f

c

ji

c

ci

c

oi

k2

r

rln

k2

r

rln

k2

rr

ln

TT

q

+

+

=

MATERIALMATERIAL

HDPEHDPE

K (W/K (W/m.Km.K))

0.430.43

PURPUR

SteelSteel

0.030.03

45.0045.00

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Site Field Insulation MethodsSite Field Insulation Methods11-- Traditional GI roll up with PUR chemicals & heat shrink sleeveTraditional GI roll up with PUR chemicals & heat shrink sleeve

Disadvantages:Disadvantages:

-- Time consumingTime consuming-- Needs well trained installersNeeds well trained installers

-- Higher failure rateHigher failure rate

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Site Field Insulation MethodsSite Field Insulation Methods

22-- RayjointRayjointTMTM with injected PUR Chemicalswith injected PUR Chemicals

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Site Field Insulation MethodsSite Field Insulation Methods

33-- Welding of HDPE Sleeve:Welding of HDPE Sleeve:

-- This method has been used in Europe since 15This method has been used in Europe since 15--20 years ago20 years ago

-- Local Professional contractors are available in UAE marketLocal Professional contractors are available in UAE market

Foaming Unit:Foaming Unit:

The mobile unit is selfThe mobile unit is self--dependent at site, equipped with a High Pressuredependent at site, equipped with a High Pressure

foaming machine to produce high quality foamfoaming machine to produce high quality foam

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Site Field Insulation MethodsSite Field Insulation Methods

33-- Welding of HDPE Sleeve:Welding of HDPE Sleeve:

Extrusion Welding of HDPE Sleeve:Extrusion Welding of HDPE Sleeve:

Foam Injection into the joint:Foam Injection into the joint:

Destructive Test of the joint:Destructive Test of the joint:

High quality joint foamHigh quality joint foam

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www.eppi.ae

THANK YOU!gmail@eppi.ae