program
Výrobní program O firmě Certifikáty Ceník Kontakty
1. Pre-insulated Pipeline Systems
Introduction – General Information
Applied Materials
Medium-Conducting Pipeline
Insulating Layers
Outer Protective Layers
Pipeline and Fittings
PIP 130 A, B, C
PIP 180 A, B, C
PIP 210, 240, 270
PIP 300 A, B, C
Elbows, Branches, Reducers, Compensators, Fixed Points
Accessory Parts - Entries, Pipeline Ends, Expansion Cushions
Mounting Instructions for Pipeline Connection, Coupling Design
Safety Regulations
Handling, Storage
Planning Activity Documents
Earth Works
Thermal Losses of Distribution Systems – k-Coefficient
Solution of Heat Dilatation
Compensating Bodies L, Z, U
Heat Tensioning of Pipeline
Axial Compensators
Steam Distribution System
Installation Length, Friction Forces, Pipe Cross-Sections
Monitoring System
2. Production Assortment of the Company IZO

Heat Dilatation of Pipeline

If we intend to bed the single pre-insulated pipe freely, we determine the temperature growth from the formula:

ΔL = L . 103 . αt . Δt        [mm]

where:  αt  -  expansion ratio [K-1]
L  -  pipeline length [m]
Δt  -  maximum difference of temperatures of the medium and environment    [K]

For channelless bedding, where this movement is limited by friction, it is valid:

Lz = L . 103 . αt . Δt = 
Fft . L3 . 103

2 . A . E
        [mm] 
where:  Lz  -  elongation of PIP at channelless bedding   [mm]
Fft  -  friction force (see charts) [Nm-1]
A  -  pipeline cross section [mm2]
E  -  modulus of elasticity, e.g. steel 2,1 x 105 [Nmm-2]

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