Armaflex Solutions For Heating and Plumbing

Heating and Plumbing

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  Insulation main target:

• Limit heat losses (energy savings)• Noise control• Condensation control (sanitary cold water, waste water pipes)• Reduce risk of freezing

In heating and plumbing both PEF and FEF materials (eg. Tubolit or SH/Armaflex) can be used as insulation

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  The main target is to limit heat losses.  Insulation with low λ-heat conductivity factor, are required.   Easy installation is a benefit.

Why ?

What is heat?

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Heat is the form of energy which is transferred from a body with higher temperature to a body with lower temperature. This process is called heat transfer.The bodies can transfer heat because they „contain” it in form of internal kinetic energy which is the energy of motions of all the body's particles, such as e.g. atoms or molecules.If a body gets a portion of heat which is then for some time fully or partially retained within the body, the immediate recation is increase of the temperature of the body which means that its internal energy has been increased too.

Heat transfer is driven by temperature difference 5

Temperature is one of the so called basic physical values, i.e. it has no definition.We can say that temperature is a measuring scale of the internal kinetic energy of a body. The higher temperature the bigger internal kinetic energy of a body. A fundamental condition for heat transfer is temperature difference between the bodies. The higher this difference the bigger is the rate of heat transfer, i.e. how much energy is transferred per unit of time.Knowing the temperature profile is an important part of the overall heat transfer calculation.

hot pipe insulation ambient air

heat transfer

temperature profile

Heat Losses

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Thermal conductivity λ7

Thermal conductivity is a material property representing the ability of the material to conduct heat.

The thermal conductivity is the heat in joules which, per unit of time , flows through 1 m² of a 1 m thick flat layer of a substance (heat flow density) when the temperature difference is 1 K.

λ [W/mK]

Some examples of thermal conductivity values8

[W/(mK)]• 0,024 air• 0,036

Armaflex• 0,20 wood• 0,40 plastic• 0,55 water• 0,84 concrete air Armaflex wood plastic water concrete

0.000

0.200

0.400

0.600

0.800

1.000

[W/(mK)]• 0,036 Armaflex• 50 steel• 200 aluminium• 380 copper

Armaflex steel aluminium copper0

100

200

300

400

Thermal conductivity is a material parameter, it does not depend on thickness or volume.

Why Armaflex has so low thermal conductivity?9

Armaflex has a closed cell structure of small air cells. Air is „trapped” in the cells, it can not flow and due to very small size of cells there is no convection in the cells.

Heat is transfered on the way of:• conduction in the structure of synthetic rubber (Flexible Elastomeric Foam),• conduction in air,• radiation through air between cell walls.

[W/mK]• 0,024 air• 0,036

Armaflex

Temperature profile (gradient) in insulation10

Heat loss from a pipe kl [W/mK] 11

The lower λ the lower heat lossesThe bigger outersurface of insulation the higher heat losses

λ

Heat loss from a pipe12

The bigger insulation thickness

The lower heat losses

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Heating and Plumbing

Products for Heating and Plumbing

TUBES SHEETS TAPES

1. Standard PEF Products:Tubolit DGTubolit STubolit S Plus

2. Special PEF ProductsTubolit ARTubolit AR Fonowave

3. FEF Products:SH/Armaflex

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Thank you