On warming a country house, erdealer theory without practice :) Before erdealer trees were cut down

On warming a country house, erdealer theory without practice :) Before erdealer trees were cut down and put a frame or brick to build a castle, let's think, and how much heat is in this house? Will it comfortable - warm in winter and cool in summer? Obviously, the thicker the walls are, the more reliable will be home. However, the thick walls can quite happily eat a wholesome amount of interior and hurt to hit the snot budget. Accordingly, here we must look for a healthy compromise. Effective insulation and ventilation system allows you to: reduce heating costs (reduce erdealer boiler output and reduce costs Chubais) to create a comfortable environment inside, increase the service life of the bearing structures.
The ability of walls to resist the flow of heat emanating from the room outside, characterized by resistance to heat RO: RO = 1/aB + R + 1/aH, where: aB - heat transfer coefficient on the inner surface of the wall is equal to 8.7 W/m2 C ; aH - heat transfer erdealer coefficient at the outer surface of the wall is equal to 23 W/m2 C; R - thermal resistance of the wall material, m2 C / Watt. The higher thermal resistance Ro, the better heat-shielding properties of the wall and the less heat is lost through it. Thermal resistance R depends erdealer on the design thickness d and its thermal conductivity g. If the design is made of the same material, its thermal resistance is calculated by the formula: R = d / g; (If the wall is multilayered, its thermal resistance is made up of individual layers of thermal resistance Ri: R = sum Ri = R1 + R2 + ... + Rn, ie the sum of all di / gi) Thermal conductivity of the material describes shielding properties of materials and shows how much heat passes through 1 m2 of the outer fence thickness of 1 m with a temperature difference on the surface 1 C. The structures of materials with low values thermal conductivity with high heat resistance Ro, and hence high heat-shielding properties. The best material with high heat-shielding properties are foam and rock wool, see the schedule and sign below: Material Thermal conductivity, W / m * K for Concrete Stone Concrete rubble on sand 1,300 0,700 0,040 Wood stone wool 0.150 0.440 Hollow Brick Foam 0.810 0.300 0.037 Styrofoam Houses Should uteplyatysya based on the requirements of SNIP 02/23/2003 "Thermal protection of buildings." According to the SNP, the normalized heat transfer resistance of external walls for different regions of Russia will look like this: For Moscow heat resistance should not be below 3.16 m2 C / Watt. Substituting in the formula tsifirki get that to comply with this norm, we need to build a brick wall five feet in thickness. walls or wood 45 inches thick. most intelligent and thrifty choose basalt wool or foam - their thickness inside the wall will be only 10-12 inches! insulating materials of stone wool with a low coefficient of thermal conductivity due to the large number erdealer of pores filled with air. known that water is much better air conducts heat. Its thermal conductivity is 20 times larger than into the air. Spillage of moisture in the pores of the material air is bad conductor of heat, replaced water heater and crude begins to miss the heat better than dry and lose its shielding properties. erdealer Therefore, the use of insulation must be protected erdealer from moisture by proper steam unit and waterproofing layers. Usually this is done with the use of wind and parozahysnoyi films. The air always contains a certain amount of water vapor in the warm and always more than the cold. indoor air at a temperature of 20 C and a relative humidity of 55% air contains 8 grams of water pairs per 1 kg of dry air, creating a partial pressure of 1238 Pa. At a temperature of -10 C and a relative humidity of 83% in air containing about 1 g of steam per 1 kg of dry air, creating a partial pressure of 216 Pa. Due to the difference between the partial pressures internal and external air through erdealer the wall is a constant diffusion of water vapor from a warm room outside. As a result, actual use wall material is in some moist condition. dampening material degree depends on the temperature and humidity conditions inside and outside walls. As a result of the diffusion erdealer of water vapor in the wall of the movement erdealer of moist air from the interior. Passing through permeable construction fence, moisture evaporates out. But if the outer surface of the wall is a layer of material that does not transmit erdealer or bad pass water vapor, the moisture begins to accumulate at the boundary layer vapor tight, causing vidsyrivannyu walls and rotting. thermal design moisture decreases rapidly and it begins to freeze. erdealer Than stone wool is different from foam? First of all, it is non-flammable, and, most importantly, does not emit harmful erdealer substances in the fire. Styrofoam - organic material which the combustion of view