Ventilation and air-conditioning
RU EN

Transport industry


Owing to its excellent thermal performance, RU-FLEX insulation is widely used in transport. Ventilation and air-conditioning systems in cars, noise insulation structures in motor vehicles, engineering systems of passenger ships with foam rubber insulation are modern solutions recognized all over the world.

Lightweight thermal insulation made of expanded rubber is optimally suited to transport applications. Increased fire performance requirements, environmental safety, up-to-date thermal conductivity values, easy application and lifetime reliability are the undisputed advantages of RU-FLEX products.

To help choose the right RU-FLEX VENT-SK insulation thickness, we have prepared ready-made solutions (basic calculations).

Problem and solution

Calculation of insulation thickness for the supply ventilation system.

Initial data

  • Heat transfer medium: air
  • tо = 20 ˚С – temperature in the shopping center;
  • tm = -25 ˚С – temperature of the heat transfer medium in the duct, winter time;
  • ϑв = 4 м/с – velocity of the heat transfer medium;
  • ϕ = 60 % — relative humidity in the shopping center.
Without cover layer:
Duct dimensions, mm Calculated insulation thickness RU-FLEX VENT-SK, mm Recommended insulation thickness RU-FLEX VENT-SK, mm
150х150 15,71 Р19
200х200 15,98
450х450 16,47
900х600 16,65
With foil-covered coating (METAL):
Duct dimensions, mm Calculated insulation thickness RU-FLEX VENT-SK METAL, mm Recommended insulation thickness RU-FLEX VENT-SK METAL, mm
150х150 22,87 Р 25
200х200 23,38
450х450 24,4 Р 25
900х600 24,78

P-Designation of the roll-fed material.
Calculations made according to SP 61.13.330.2012 RF