COMPARATIVE TABLE OF ECONOMIC EFFICIENCY
the use of mineral wool and ultrathin thermal insulation Bronya as a thermal insulation material on the example of a section of the DN 159mm pipeline with a length of 1 p.m., temperature 100 ° C, ambient temperature -30 ° C
| Indicator name | Ed. Ed. | Mineral wool | Bronya | Difference (%) |
| Layer thickness* | mm | 60 | 2 | 58(96,7%) |
| Thermal conductivity | Vtm/°C | 0,041 | 0,001 | 0,040(97,6%) |
| The cost of installation, including the cost of materials and works | rub/p.m. | ≈1200** | ≈600** | 1000(50%) |
| Service life | years | 5 | 15 | 10 |
| Heat loss |
kcal/h m
(Gcal/h m)
|
76,4 (0,0000764) | 55,9 (0,0000559) | 20,5 (36,8%) |
|
Heat loss during the heating period (215 days •24 hours = 5160 hours***) from one P.M. |
kcal/5160hm | 394 224 (0.394 Gcal) | 288 444 (0.288 Gcal) | 105 780 (36,8%) |
1. Based on the data in the table, it can be seen that the savings in the installation of thermal insulation Bronya can be up to 50% due to the low complexity of the work and the timing of its application. For example, for a pipeline of 100 p.m. the cost of installation, including the cost of thermal insulation materials, will be: Min.cotton wool: 100 p.m. * 1200 rubles/p.m. = 120,000 rubles. Bronya: 100 p.m. * 600 rub./p.m. = 60,000 rub.
2. Heat loss during the heating period (5160 hours) from one linear meter of the pipeline, when using Bronya insulation with a layer thickness of 2 mm, is 36.8% (or 0.106 Gcal) lower compared to mineral wool insulation.
For example, for a pipeline of 100 p.m. heat loss will be:
Min.wool: 0,394 (Gcal/5160ч m) ∙ 100 (m) ∙ 640,7 (RUB/Gcal) = 25 RUB 244/5160ч Bronya: in 0.288 (Gcal/5160ч m) ∙ 100 (m) ∙ 640,7 (RUB/Gcal) = 18 452 RUB/5160ч
Savings during the heating period, when using Bronya insulation, will amount to 6,800 rubles, which is 36.85% less than when using mineral wool as a thermal insulation material. total: Savings during installation of 60,000 rubles. + savings for the heating period of 6,800 rubles =66800 rubles.
Thus, the use of ultra-thin thermal insulation Bronya allows you to get savings not only during installation, but also after application, immediately during operation. Considering the above, as well as the service life of the Bronya material, it can be concluded that the material is highly efficient not only in its thermophysical properties, but also from an economic point of view.
* - the thickness of the Bronya layer is calculated based on the material consumption of 1L per 1 m2 with a thickness of 1 mm. Thus, for DN 159mm (1 p.m. = 0.5 m2), the layer thickness will be 2 mm. The calculation of the insulation thickness based on the norms of SNiP 41-103-2000 showed the thickness of the Bronya layer of 1.6 mm.
** - for new pipelines that do not require dismantling of the old insulation
*** - number of days of the heating period according to the website of the Upper Volga UGMS