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Improvement of energy efficiency in heat production and distribution

Ernestas AbromasROCKWOOL Technical Insulation

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ROCKWOOL Technical Insulation

Global producer of stone mineral

wool

Key segments:

Process industry

Marine & offshore

Mission - To be your trusted

partner and strenghten market

leadership by offering:

innovative products

systems & solutions

partnership & service

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The reasons for usinginsulation

Stone wool insulation is a proven

technology that:

Increases personal protection

Improves working conditions (noise

reduction)

Reduces heat loss

Raises the equipment effectiveness

Limits the emissions (CO2)

Improves energy efficiency

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Focus on insulation

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Energy efficiency

■ One of the most important keys to a low

carbon future is energy efficiency

■ Improvement of energy efficiency can be

done by investing in high tech solutions as:

o Cogeneration of heat & electricity

o Heat recovery

o Process optimization & automation

■ Or reducing the heat loss to a minimum

■ The potential energy and CO2 savings by

using an existing ready solutions like

insulation is not fully recognized yet

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Size: H: 5.44 x W: 6.68 cm

16.1 x6,12, 16.1 x 12.2

The hidden potential

■ Many installations have 30-year old

insulation

■ Heat losses are greater than 150 W/m2

■ Leaking insulation cladding, in addition

to unexpected loss of energy, can cause

corrosion

■ Lack of insulation on fittings and valves,

increasing energy costs

■ In many cases the insulation is not promptly

and properly maintained, simply because it’s

not considered a risk or cost effective

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Heat losses from damaged insulation can be up to 8 times greater

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€ 1,546

billion

€ 1,864

billion

€ 1,496

billion

€ 1,836

billion

€ 1,572

billion

Uninsulated Pipe

Pipe Insulated with 50mm Rockwool

Pipe with damaged or missing insulation

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0.5

1

1.5

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2.5

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Heat loss, kW

/m

LP Steam pipe T 250oC: Pipe Diameter: DN80 (3inch), Ambient, temp.: 10oC, Energy costs: 0.03 EUR/kWh, Length=10km, static calculation

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Potential insulation effect

620 PJ

49 Mt C02

710 PJ

56 Mt C02

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Potential gain of an insulated valve

620 PJ

49 Mt C02

710 PJ

56 Mt C02

Steam pipe 220oC

Pipe diameter DN 150

Located outside 20oC

Average wind conditions

Annual energy losses without insulation 2900 €

Annual savings with insulation 2300 €

Improvement of energy efficiency 80%

Payback time < 2 months

Insulation cost ~200 €

Source: Nederlands Centrum Technische Isolatie

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How to tap the potential?

■ Inspect & repair: Insulate

uninsulated and damaged parts

■ Go all the way: Consider

insulating today beyond

todays’cost effect levels to be

prepared for the future

■ Get the knowledge: Involve

insulation experts during the

design phase

The lowest hanging fruit

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Technical support

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An infrared camera allows to pre-identify

potential overheats, lack of insulation under

cladding, temperatures exceeding personal

protection.

IR camera

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Heat transfer measurement

■ Heat losses estimation

■ Analysis of thermal energy flow

paths

■ Measurements made by a

certified engineer

■ The results and observations

presented in the Energy

Inspection Report

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Calculation program

■ Wide range of calculation options

■ Simultaneous calculations in a single

step

■ The inclusion of thermal bridges

associated with the insulation and

installation

■ Automatically recommends the most

optimal product solution

■ Calculation of CO2 reduction and

savings from insulation

■ Calculations in conformity with the

regulations: VDI 2055 and EN ISO

12241

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Summary

As professionals, we strive for the best possible result.

Our goal is to provide information taking into account the latest technical

advances and follow market trends.

Beside the sale of technical mineral wool products we offer also:

Design and selection of insulation

Energy inspections

Technical consultancy

Training

Please contact us: www.rockwool-rti.com

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