This online course is meant for engineers, designers and utility owners who are dealing with pre-insulated district heating and district cooling networks. After passing the course participants will get all needed basic knowledge regarding pipeline design and engineering.

The course consists of 4 blocks - it is possible to pass all blocks or some specific blocks.

The course will be held online in English.

Description of the course

General presentation:
Pipe systems, materials, media Pipe
Temperature / Different pipe's catalogues / Valid areas / EN – codes

Definition of pipe systems:
Temperature / pressure – lifetime
Project classes: A-B and C, safety
Number of full load cycles

Fundamentals of bonded pipe systems in soil:
Friction, expansion, natural fixpoint

Straight pipe sections:
Allowable axial stress level, 150 / 170 / 190 MPa or higher
Limit stability
Use of different calculators, hand calculations on practical examples

Trench:
Trench backfill material – compaction, what to inspect on site
Pipes in protection pipe
Lifting several pipes
Max trench length exposed with heat on
Shallow installation
Max. soil cover

Change in direction:
Allowable axial stress level, limit stability
Compensated system
Preheated system (in open trench)
E-comp system
High axial stress level (without compensation)
Examples

Bends:
Calculation of expansion zone
80° to 90°, other angles 10° to 80°
Calculators and hand calculations for L / Z and U bends

Casing Joint:
Material properties
Shrink joints
Welded joints

Monitoring systems:
Detect principles (resistance / impulse)
Wiring
Commissioning

Branches:
45° branch – max distance to next expansion
90° branch - movement
Max length of branch
Examples

Reductions:
Reductions in media pipe

TwinPipe design:
Design (what is different to single pipe)
Merging from single to TwinPipe
Handling of Twinpipe

Flexible pipes:
Different types
Cu / Steel / PEX / AluPex – design rules