Speed Of The Coolant In The Pipes; Thickness Of The Pipes; Pipe Identification - Mitsubishi Electric MEGR Manual

LYRA compensator
4.4.3

Speed of the coolant in the pipes

OBLIGATION:
The designer of the plant is responsible for the precise sizing of the pipes in accordance with the
speed of the fluid in the pipes as shown below.
It is necessary to consider sufficiently high fluid speeds to allow an effective return of the lubricating oil to the compressor.
At the same time, sufficiently low fluid speeds must be evaluated to avoid pipe erosion and water hammer due to electric valve
closures.
4.4.4

Thickness of the pipes

Pipe thicknesses must be respected otherwise the warranty will be forfeited.
4.4.5

Pipe identification

The coolant inlet and outlet pipes can be identified by the labels applied directly on the machine:
Installation, use and maintenance manual
Circuit line Minimum Speed (m/s)
Coolant
Delivery
R410A
Liquid
Pipe external diameter (Ø mm)
ATTACCO GAS
CALDO
HOT GAS
CONNECTION
HEISSGASLEITUNG
RACCORDEMENT
ЛИHИЯ ЖИДКOCTИ
GAZ
OMEGA compensator
Maximum Speed (m/s)
5
0.5
Thickness (mm)
12
16
18
22
28
35
ATTACCO LIQUIDO
LIQUID CONNECTION
FLUSSIGKEITSLEITUNG
RACCORDEMENT
ЛИHИЯ ГOPЯЧEГO
LIQUIDE
ГА3А
18
2.5
1.0
1.0
1.0
1.0
1.5
1.5
25