Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Thermal resistance in building elements like walls, floors and roofs above and below the ground.
Thermal resistance in some common building elements are indicated in the table below. The values can be used to approximately
heat loss calculations from buildings.
Thermal Resistance - Inside and Outside Walls Thermal Resistance Inside and Outside Walls Resistance (m 2K/W) R i = 1/f i 1) R o = 1/f o 1) R i+ R o Building parts against the surrounding environment 0.13 0.04 0.17 Building parts others 0.13 0.13 0.26
Building Elements - Thermal Resistance against Earth Thermal Resistance for Building Elements against Earth Resistance (m 2K/W) R e Floors 0.5 m above to 0.5 below earth bound, 0-1 m from inside outside wall - without cold bridge protection 0.2 Floors 0.5 m above to 0.5 below earth bound - with cold bridge protection 1.0 Center-field above 1 m from inside outside wall 1.5 Basement floors 0.5 m below earth bound 2.0 Basement walls under earth bound, the whole wall against the earth, where h is the basement floors level below the earth bound (m) 0.2 + 0.3 h Basement walls under earth bound, basement floor against the earth and partly against air 2.0 1 K/W = 0.5275 (h oF)/Btu Related Topics Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more. Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods to reduce energy consumption. Related Documents Overall heat transfer loss from buildings - transmission, ventilation and infiltration. Hot water heating system design procedure with heat loss, boiler rating, heater units and more. Estimated infiltration heat losses from buildings. Heat loss through common building elements due to transmission, R-values and U-values - imperial and SI units.
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