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GB/T 50466-2018 Code for Thermal Design of Civil Building

Standards48 clauses

General Provisions

第 1.0.1 条This code is formulated to implement national policies on building energy efficiency and environmental protec…
第 1.0.2 条This code applies to the thermal design of new, expanded, and renovated civil buildings (including hotel buil…
第 1.0.3 条Thermal design of civil buildings shall be coordinated with architectural design, energy efficiency design, H…
第 1.0.4 条Building thermal design should be adapted to local conditions, taking into account factors such as climate zo…
第 1.0.5 条The thermal design of hotel buildings shall meet indoor thermal comfort requirements and comply with the curr…

第 2.0.1 条Building thermal design: refers to the design of the thermal performance of building envelope structures base…
第 2.0.2 条Building envelope: includes exterior walls, roofs, doors and windows, floor slabs, etc. In hotel buildings, t…
第 2.0.3 条Thermal resistance: the ability of the building envelope to resist heat flow. In hotel buildings, high therma…
第 2.0.4 条Heat transfer coefficient: the heat flux density through the building envelope per unit temperature differenc…
第 2.0.5 条Thermal inertia index: reflects the ability of the building envelope to resist temperature fluctuations; hote…
第 2.0.6 条Building thermal bridge: A location in the building envelope where the heat flux density is significantly inc…
第 2.0.7 条Condensation: the phenomenon of water vapor condensing on the surface or within the building envelope; moistu…
第 2.0.8 条Air tightness: the ability of the building envelope to resist air infiltration. In hotel buildings, high air …

第 3.1.1 条The thermal design of hotel buildings shall determine the corresponding thermal design parameters according t…
第 3.1.2 条Hotel buildings should meet winter thermal insulation, summer heat insulation and moisture proof requirements…
第 3.2.1 条The heat transfer coefficient (K value) of the building envelope of a hotel building, such as exterior walls,…
第 3.2.3 条The heat transfer coefficient and shading coefficient (SC or SHGC) of exterior windows (including transparent…
第 3.2.5 条The heat transfer coefficient and shading coefficient of transparent roof sections (such as skylights) in hot…
第 3.3.1 条Hotel buildings shall be checked for internal condensation and moisture in the building envelope, and moistur…
第 3.4.2 条Thermal bridge locations in hotel buildings (such as ring beams, structural columns, window lintels, etc.) sh…
第 3.5.1 条Insulation should be provided for the floors of hotel buildings (especially ground floors), and their thermal…

第 4.1.1 条The thermal design of the hotel building envelope shall meet the requirements for winter insulation, summer h…
第 4.2.1 条The thermal performance parameters of the building envelope of the hotel, such as external walls, roofs, and …
第 4.2.3 条The heat transfer coefficient, solar heat gain coefficient (SHGC), and airtightness rating of exterior window…
第 4.3.2 条Insulation layers shall be provided for the roof and exterior walls of hotel buildings. The insulation thickn…
第 4.4.1 条Moisture proof verification shall be carried out for the interior and surfaces of the hotel building envelope…
第 4.5.2 条Insulation should be installed in hotel building floors (especially ground floors), with thermal resistance v…
第 4.6.1 条In hotel buildings, the thermal design of the building envelope for rooms with different functions (such as g…

第 4.1.1 条Hotel buildings shall undergo thermal energy efficient design, and the thermal performance parameters of thei…
第 4.2.1 条The building shape coefficient of the hotel shall comply with the limit requirements of the climate zone in w…
第 4.2.2 条The window to wall area ratio of hotel buildings in each orientation shall comply with the regulations: in se…
第 4.3.1 条The heat transfer coefficient and thermal inertia index of the hotel building's exterior walls shall comply w…
第 4.3.2 条The heat transfer coefficient of the hotel building roof shall comply with the limits: K≤0.25 W/(m²·K) in sev…
第 4.4.2 条The air permeability rating of exterior windows in hotel buildings shall not be lower than Grade 6 as specifi…
第 4.5.1 条The heat transfer coefficient of hotel building floors (elevated or cantilevered floor slabs exposed to outdo…
第 4.6.1 条Hotel buildings should avoid thermal bridges; insulation measures should be taken at thermal bridges such as …
第 4.7.1 条The thermal performance of the hotel building envelope should be comprehensively evaluated through the trade …

第 4.4.1 条The heat transfer coefficient and shading coefficient of exterior windows (including transparent curtain wall…

第 4.1.1 条The thermal design of hotel buildings shall meet the requirements for winter insulation, summer heat protecti…
第 4.2.1 条The window to wall area ratio for each orientation of the hotel building shall comply with the regulations, a…
第 4.2.2 条The thermal resistance or heat transfer coefficient of the building envelope of the hotel, including the roof…
第 4.2.3 条For exterior walls, roofs, floors and other parts of the hotel building, the inner surface temperature of the…
第 4.2.4 条Exterior windows of hotel buildings (including balcony doors) shall be classified for air tightness and meet …
第 4.3.1 条Thermal design of the hotel building envelope shall include winter and summer load calculations, based on whi…
第 4.3.2 条In hotel buildings, when lightweight composite walls or curtain walls are used, their thermal inertia index s…
第 4.4.1 条In hotel buildings, insulation layers shall be provided at floor slabs, partition walls and deformation joint…
第 4.4.3 条The hotel building floors (such as ground floors and basement roof slabs) shall be designed with thermal insu…
第 4.5.1 条The thermal design of the hotel building envelope should include a condensation and moisture check to ensure …

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