Exchange rate project of RSK residential building

Report

Thermal engineering calculation of the enclosing structure was made: according to SNiP 23022003 "Thermal protection of buildings," SP 231012004 "Design of thermal protection of buildings," SNiP 230199 * "Construction climatology"

Determine the required thickness of the layer in the structure of the Outer Wall in the Residential building, school, hotel or dormitory located in the city of Rostov-on-Don (humidity zone - Dry).

Estimated outside air temperature in cold season, t _ ext = 22 ° С;

Design average internal air temperature of the building, t _ int = 20 ° С;

Average outside air temperature of the heating period, t _ ht = -0.6 ° С;

Heating period duration, z _ ht = 171 days;

Normal humidity mode of the room and operating conditions of enclosing structures - A.

Coefficient taking into account the dependence of the position of the outer surface of the enclosing structures with respect to the outer air, n = 1;

Heat transfer coefficient of the outer surface of the enclosing structure, α _ ext = 23 W/( m ²· ° С);

Heat transfer coefficient of the inner surface of the enclosing structure, α _ int = 8.7 W/( m ²· ° С);

Normalized temperature difference, Δt _ n = 4 ° С;

Normalized heat transfer resistance, R _ req = 2.633 m ²· ° C/W;

No. Name, density?, W/( m· ° С) t, mm

1 Cement sand mortar, 1800 kg/m ³ 0.76 20

2 Common clay on cement sand mortar (GOST 530), 1800 kg/m ³ 0.7 250

3 Polystyrene foam (GOST 15588), 40 kg/m ³ 0.041 0

4 Ceramic hollow with density of 1400 kg/m3 (gross) on cement sand mortar (GOST 530), 1600 kg/m ³ 0.58 120

5 Cement sand mortar, 1800 kg/m ³ 0.76 40

Thickness of the desired layer, t = 75 mm;

Total thickness of the structure, ∑t = 505 mm;