Commercial real estate
Commercial real estate properties are the principal users of RU-FLEX foam rubber insulation. Heating, ventilation and air-conditioning systems, cold and hot water supply systems – for each area there is a ready-made solution to increase the efficiency of buildings and structures.
Ventilation and air-conditioning in modern buildings is a prerequisite for their successful operation. RU-FLEX thermal insulation structures are ready-made, tried and tested solutions based on the experience of world leaders in the field. Aesthetic appearance and ease of installation are important criteria in choosing RU-FLEX materials for the design and construction of commercial buildings
To help choose the right RU-FLEX VENT-SK and RU-FLEX ST insulation thickness, we have prepared ready-made solutions (basic calculations).
Problem and solution
- 01Prevention of condensation on the outside surface of the duct.
- Calculation of insulation thickness for the supply ventilation system
- 02Prevention of condensation on the inside surface of the duct.
- Calculation of insulation thickness for the exhaust ventilation system
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.
| 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 |
| 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
* If a ready-made thermal insulation solution is a construction consisting of two or more layers, it is recommended to use thermal insulation material ST with ALU coating.
Calculation of insulation thickness for the exhaust ventilation system
Initial data
- Heat transfer medium: air
- tm = +20 ˚С – temperature of the heat transfer medium in the duct;
- tокр = -25 ˚С –ambient temperature (coldest five-day period (0.92) in Moscow);
- ϑв = 4 м/с – coolant velocity;
- φ = 80 % — relative humidity of the ambient air.
According to the technical specifications (TS), RU-FLEX outdoor installation is possible if coatings are used to protect the surface of the products from weathering.
| Duct dimensions, mm | Calculated insulation thickness RU-FLEX ST PROM ALU, mm | Recommended insulation thickness RU-FLEX ST PROM ALU, mm |
|---|---|---|
| 150х150 | 16,6 | Р19 |
| 180х180 | 16,79 | Р19 |
| 200х200 | 16,87 | Р19 |
| 450х450 | 17,37 | Р19 |
| 900х600 | 17,6 | Р19 |
Calculations made according to SP 61.13.330.2012 RF