Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
50176-93
Thermal Design Code for Civil Building
1993-03-17 Issued
1993-10-01 Implementation
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Thermal Design Code for Civil Building
50176-93
Editor Department: Ministry of Construction of the People's Republic of China Approval Department: Ministry of Construction of the People's Republic of China Implementation Date: October 1, 1993
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Notice on the Release of the National Standard "Civil Building Thermal Design Code"
Construction Standards [1993] No. 196
According to the requirements of the State Planning Commission's Document No. Jizong [1984305], the "Civil Building Thermal Design Code" formulated by the China Academy of Building Research in conjunction with relevant units has been reviewed by relevant departments and is now approved as a mandatory national standard "Civil Building Thermal Design Code" GB50176-93, which will be implemented on October 1, 1993. The Ministry of Construction is responsible for the management of this standard, the China Academy of Building Research is responsible for the specific interpretation, and the Ministry of Construction's Standards and Quotas Institute is responsible for organizing its publication and distribution. Ministry of Construction of the People's Republic of China
March 17, 1993
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Compilation Statement
This specification is compiled by the China Academy of Building Research in conjunction with relevant units in accordance with the requirements of the State Planning Commission's Document No. 1984305. During the compilation of this specification, the specification compilation team conducted extensive investigations and studies, carefully summarized the practical experience of my country in building thermal research and design since the founding of the People's Republic of China, referred to relevant international standards and advanced foreign standards, carried out scientific research and experimental verification work on major technical issues, and widely solicited opinions from relevant units across the country. Finally, our ministry and relevant departments reviewed and finalized the draft. In view of the fact that this specification is compiled for the first time, in the process of implementation, it is hoped that all units will combine engineering practice and scientific research, carefully summarize experience, and pay attention to accumulating data. If any modification or supplement is found, please send your opinions and relevant data to the Institute of Building Physics, China Academy of Building Research (Address: No. 19 Chegongzhuang Street, Beijing, Postal Code: 100044) for reference in future revisions. Ministry of Construction of the People's Republic of China
January 1993
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Main Symbols
Chapter 1 General
Chapter 2
Chapter 3
Outdoor Calculation Parameters·
Requirements for Thermal Design of Buildings
Section 1
Section 2
Section 3
Zoning and Design Requirements for Thermal Design of Buildings
Design Requirements for Insulation in Winter||tt ||Summer heat protection design requirements
Section 4 Thermal design requirements for air-conditioned buildings.
Chapter 4 Thermal insulation design of enclosure structures
Determination of the minimum heat transfer resistance of enclosure structures
Section 1
Section 2 Thermal insulation measures for enclosure structures
Section 3
Verification of internal surface temperature at thermal bridge locations and thermal insulation measuresSection 4
Regulations on thermal insulation performance, air tightness and area of windowsSection 5 Thermal requirements for floors of heating buildings
Chapter 5 Thermal insulation design of enclosure structures
Section 1 Thermal insulation measures for enclosure structures Requirements for heat insulation design of buildings
Section 2 Heat insulation measures for building envelopes
Chapter 6 Moisture-proof design of building envelopes Section 1 Verification of internal condensation and moisture in building envelopes·Section 2 Moisture-proof measures for building envelopes·
Appendix 1
Term explanation
Appendix 2
Calculation formulas and parameters for building thermal design
Appendix 3
Outdoor calculation parameters
Appendix 4
Calculation parameters for thermal physical properties of building materials
Engineering construction standard full text information system| |tt||：(10)
..(16)
：(17)
（20)
·(25)
（42)
Engineering Construction Standard Full-text Information System
Appendix 5 Correspondence between window-to-wall area ratio and minimum allowable thermal resistance of exterior wall
Appendix 6 Economic evaluation of thermal insulation of enclosing structure (73)
Appendix 7 Conversion table between legal measurement units and commonly used non-legal measurement units. (78) Appendix 8
National building thermal design zoning map. (Appendix IX Explanation of terms used in this specificationwww.bzxz.net
Additional explanation
Engineering Construction Standard Full Text Information System
·(80)
Engineering Construction Standard Full Text Information System
Main symbols
Outdoor calculated temperature amplitude
-Indoor calculated temperature amplitude
-Inner surface temperature amplitude
-Thermal conductivity, thermal conductivity and heat storage coefficient correction factor Ground heat absorption index
Thermal permeability coefficient of material layer
Specific heat capacity
-Warmth index
Number of heating period days
-Heat transfer area
Vapor permeability resistance
Solar radiation illuminance
-Heat transfer coefficient
-Outdoor air water vapor partial pressure
|Indoor air water vapor partial pressure
-Heat transfer resistance
-Minimum heat transfer resistance
Economic heat transfer resistance
Outer surface heat transfer resistance
-Inner surface heat transfer resistance
-Material heat storage coefficient
Outdoor calculated temperature
-Indoor calculated temperature
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
［4t]
Dew point temperature
Heating outdoor calculated temperature
Outdoor comprehensive temperature
Allowable temperature difference between indoor air and inner surface-Outer surface heat storage coefficient
Inner surface heat storage coefficient
Number of days in heating period
Outer surface heat transfer coefficient
-Inner surface heat transfer coefficient
Surface temperature, internal temperature
-Maximum temperature of inner surface
Material vapor permeability coefficient
Attenuation multiple
Attenuation multiple of indoor air to inner surface
-Delay time
Delay time of indoor air to inner surface
Solar radiation absorption coefficient
-Material dry density
-Relative humidity of air
Material humidity or moisture content
Allowable increase in weight and humidity of insulation materials
Material thermal conductivity
Engineering design standard full text information system
Engineering construction standard full text information system
Chapter 1 General
Article 1.0.1 In order to adapt the thermal design of civil buildings to the regional climate, it is necessary to ensure the basic indoor This specification is formulated to meet the requirements of the thermal environment, comply with the national energy conservation policy, and improve investment efficiency.
Article 1.0.2 This specification applies to the thermal design of newly built, expanded and renovated civil buildings.
This specification does not apply to underground buildings, buildings with special requirements for indoor temperature and humidity and special uses, and simple temporary buildings. Article 1.0.3 In addition to meeting the requirements of this specification, the thermal design of buildings shall also meet the requirements of the relevant current national standards and specifications. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 2
Outdoor Calculation Parameters
Article 2.0.1 The enclosure structure is divided into four types according to its thermal index D value, and its winter outdoor calculation temperature t shall be taken according to the provisions of Table 2.0.1. Enclosure structure winter outdoor calculation temperature t. (℃) Type Thermal index D value
t. The value of
te-0. 6tw+0. 4te.min
te=0.3tw+0.7te.min
to-to mta
Note: ① The thermal inertia index D value should be calculated according to the provisions of Appendix II (II) of this specification. Table 2.0.1
②t and temn are respectively the outdoor calculated temperature for heating and the lowest daily average temperature in the cumulative years. ③ Winter outdoor calculated temperature. Should be an integer value. ④ The winter outdoor calculated temperature t. values of four types of enclosure structures in major cities across the country can be adopted according to Appendix III, Table 3.1 of this Code.
Article 2.0.2 The average value of the outdoor calculated temperature t of the enclosure structure in summer shall be determined according to the average value of the daily average temperature of the hottest day in the past years. The maximum value of the outdoor calculated temperature t.mx of the enclosure structure in summer shall be determined according to the average value of the maximum temperature of the hottest day in the past years. The amplitude value of the outdoor calculated temperature fluctuation Ate of the enclosure structure in summer shall be determined according to the difference between the maximum value of the outdoor calculated temperature te.max and the average value of the outdoor calculated temperature t. Note: The values of te, temax, and Ate of major cities across the country can be adopted according to Appendix III, Table 3.2 of this Code. Article 2.0.3 Summer solar radiation illuminance shall be the cumulative average of the maximum direct radiation daily amount in July of various places and the total radiation daily amount on the corresponding date, and the hourly solar radiation illuminance and night check average value on the vertical and horizontal planes of the east, south, west and north shall be determined by calculation.
Note: Summer solar radiation illuminance in major cities across the country can be adopted according to Appendix 3, Table 3.3 of this code. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Chapter 3
Building Thermal Design Requirements
Section 1 Building Thermal Design Zoning and Design Requirements Article 3.1.1 Building thermal design shall be adapted to the regional climate. Building thermal design zoning and design requirements shall comply with the provisions of Table 3.1.1. National building thermal design zoning shall be adopted according to Appendix 8.1 of this code.
Building thermal design zones and design requirements
Zone name
Severely cold area
Cold area
Hot summer and cold winter
Hot summer and warm winter
Mid-temperature area
Main indicators
Average of the coldest month
≤-10℃
Average of the coldest month
0~-10℃
Average temperature of the coldest month
0~10℃, average temperature of the hottest month
25
~3 0℃
Average temperature of the coldest month
>10℃, average temperature of the hottest month
Average temperature of the coldest monthC
～13℃, average temperature of the hottest month18~25℃
Engineering Construction Standard Full-text Information System
Auxiliary indicators
Daily average temperature
Number of days with <5℃
≥>145d
Daily average temperature
Number of days with <5℃
90 ~145d
Days with daily average temperature <5℃
0~90d,
Days with daily average temperature ≥25℃
40~110d
Days with daily average temperature ≥25℃
100~200d
Days with daily average temperature <5℃
0~90d
Design requirements
Must fully meet the requirements of winter insulation, generally do not consider summer heat protection
Winter insulation should be met Temperature requirements, some areas should take into account summer heat protection
Summer heat protection requirements must be met, and winter insulation should be appropriately taken into account
Summer heat protection requirements must be fully met, and winter insulation can generally be ignored
Winter insulation should be considered in some areas, and summer heat protection can generally be ignored
Engineering Construction Standard Full Text Information System
Section 2 Winter Insulation Design Requirements
Article 3.2.1 Buildings should be located in windproof and sunny areas. Article 3.2.2 The shape design of buildings should reduce the surface area, and the concave and convex surfaces of the plane and facade should not be too many.
Article 3.2.3 Residential buildings should not have open stairwells and open corridors in severe cold areas; open stairwells and open corridors should not be set up in cold areas. Public buildings should be equipped with door vestibules or hot air curtains and other windproof facilities at the entrances and exits in severe cold areas; door vestibules or hot air curtains and other windproof facilities should be installed at the entrances and exits in cold areas. Article 3.2.4 The area of the external windows of the building should not be too large, the length of the window gaps should be reduced, and sealing measures should be taken.
Article 3.2.5 The enclosure structures such as the exterior walls, roofs, floors directly in contact with outdoor air, and partitions in unheated stairwells should be subjected to insulation verification, and their heat transfer resistance should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.6 When radiators, pipes, walls, etc. are embedded in the exterior walls, the heat transfer resistance of the exterior walls at that location should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.7 The thermal bridge parts in the enclosure structure should be subjected to insulation verification, and insulation measures should be taken.
Article 3.2.8
Insulation measures should be taken within a certain range around the ground floor of residential buildings in severe cold areas.
Article 3.2.9 The structural design of the enclosure structure shall take into account moisture-proof requirements. Section 3 Summer Heat Protection Design Requirements
Article 3.3.1 The summer heat protection of buildings shall adopt comprehensive measures such as natural ventilation, window shading, enclosure structure insulation and environmental greening. Article 3.3.2 The overall layout of the building, the plane and section design of the single unit and the setting of doors and windows shall be conducive to natural ventilation, and the main rooms shall be protected from the sun from the east and west as much as possible.
Article 3.3.3 The sunny side of the building, especially the east and west windows, shall adopt the full text information system of engineering construction standards1 is adopted.
Building thermal design zoning and design requirements
Zone name
Severe cold area
Cold area
Hot summer and cold winter
Hot summer and warm winter
Mid-temperature area
Main indicators
Average of the coldest month
≤-10℃
Average of the coldest month
0~-10℃
Average temperature of the coldest month
0~10℃, average temperature of the hottest month
25
~3 0℃
Average temperature of the coldest month
>10℃, average temperature of the hottest month
Average temperature of the coldest monthC
～13℃, average temperature of the hottest month18~25℃
Engineering Construction Standard Full-text Information System
Auxiliary indicators
Daily average temperature
Number of days with <5℃
≥>145d
Daily average temperature
Number of days with <5℃
90 ~145d
Days with daily average temperature <5℃
0~90d,
Days with daily average temperature ≥25℃
40~110d
Days with daily average temperature ≥25℃
100~200d
Days with daily average temperature <5℃
0~90d
Design requirements
Must fully meet the requirements of winter insulation, generally do not consider summer heat protection
Winter insulation should be met Temperature requirements, some areas should take into account summer heat protection
Summer heat protection requirements must be met, and winter insulation should be appropriately taken into account
Summer heat protection requirements must be fully met, and winter insulation can generally be ignored
Winter insulation should be considered in some areas, and summer heat protection can generally be ignored
Engineering Construction Standard Full Text Information System
Section 2 Winter Insulation Design Requirements
Article 3.2.1 Buildings should be located in windproof and sunny areas. Article 3.2.2 The shape design of buildings should reduce the surface area, and the concave and convex surfaces of the plane and facade should not be too many.
Article 3.2.3 Residential buildings should not have open stairwells and open corridors in severe cold areas; open stairwells and open corridors should not be set up in cold areas. Public buildings should be equipped with door vestibules or hot air curtains and other windproof facilities at the entrances and exits in severe cold areas; door vestibules or hot air curtains and other windproof facilities should be installed at the entrances and exits in cold areas. Article 3.2.4 The area of the external windows of the building should not be too large, the length of the window gaps should be reduced, and sealing measures should be taken.
Article 3.2.5 The enclosure structures such as the exterior walls, roofs, floors directly in contact with outdoor air, and partitions in unheated stairwells should be subjected to insulation verification, and their heat transfer resistance should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.6 When radiators, pipes, walls, etc. are embedded in the exterior walls, the heat transfer resistance of the exterior walls at that location should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.7 The thermal bridge parts in the enclosure structure should be subjected to insulation verification, and insulation measures should be taken.
Article 3.2.8
Insulation measures should be taken within a certain range around the ground floor of residential buildings in severe cold areas.
Article 3.2.9 The structural design of the enclosure structure shall take into account moisture-proof requirements. Section 3 Summer Heat Protection Design Requirements
Article 3.3.1 The summer heat protection of buildings shall adopt comprehensive measures such as natural ventilation, window shading, enclosure structure insulation and environmental greening. Article 3.3.2 The overall layout of the building, the plane and section design of the single unit and the setting of doors and windows shall be conducive to natural ventilation, and the main rooms shall be protected from the sun from the east and west as much as possible.
Article 3.3.3 The sunny side of the building, especially the east and west windows, shall adopt the full text information system of engineering construction standards1 is adopted.
Building thermal design zoning and design requirements
Zone name
Severe cold area
Cold area
Hot summer and cold winter
Hot summer and warm winter
Mid-temperature area
Main indicators
Average of the coldest month
≤-10℃
Average of the coldest month
0~-10℃
Average temperature of the coldest month
0~10℃, average temperature of the hottest month
25
~3 0℃
Average temperature of the coldest month
>10℃, average temperature of the hottest month
Average temperature of the coldest monthC
～13℃, average temperature of the hottest month18~25℃
Engineering Construction Standard Full-text Information System
Auxiliary indicators
Daily average temperature
Number of days with <5℃
≥>145d
Daily average temperature
Number of days with <5℃
90 ~145d
Days with daily average temperature <5℃
0~90d,
Days with daily average temperature ≥25℃
40~110d
Days with daily average temperature ≥25℃
100~200d
Days with daily average temperature <5℃
0~90d
Design requirements
Must fully meet the requirements of winter insulation, generally do not consider summer heat protection
Winter insulation should be met Temperature requirements, some areas should take into account summer heat protection
Summer heat protection requirements must be met, and winter insulation should be appropriately taken into account
Summer heat protection requirements must be fully met, and winter insulation can generally be ignored
Winter insulation should be considered in some areas, and summer heat protection can generally be ignored
Engineering Construction Standard Full Text Information System
Section 2 Winter Insulation Design Requirements
Article 3.2.1 Buildings should be located in windproof and sunny areas. Article 3.2.2 The shape design of buildings should reduce the surface area, and the concave and convex surfaces of the plane and facade should not be too many.
Article 3.2.3 Residential buildings should not have open stairwells and open corridors in severe cold areas; open stairwells and open corridors should not be set up in cold areas. Public buildings should be equipped with door vestibules or hot air curtains and other windproof facilities at the entrances and exits in severe cold areas; door vestibules or hot air curtains and other windproof facilities should be installed at the entrances and exits in cold areas. Article 3.2.4 The area of the external windows of the building should not be too large, the length of the window gaps should be reduced, and sealing measures should be taken.
Article 3.2.5 The enclosure structures such as the exterior walls, roofs, floors directly in contact with outdoor air, and partitions in unheated stairwells should be subjected to insulation verification, and their heat transfer resistance should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.6 When radiators, pipes, walls, etc. are embedded in the exterior walls, the heat transfer resistance of the exterior walls at that location should be greater than or equal to the minimum heat transfer resistance required in the area where the building is located. Article 3.2.7 The thermal bridge parts in the enclosure structure should be subjected to insulation verification, and insulation measures should be taken.
Article 3.2.8
Insulation measures should be taken within a certain range around the ground floor of residential buildings in severe cold areas.
Article 3.2.9 The structural design of the enclosure structure shall take into account moisture-proof requirements. Section 3 Summer Heat Protection Design Requirements
Article 3.3.1 The summer heat protection of buildings shall adopt comprehensive measures such as natural ventilation, window shading, enclosure structure insulation and environmental greening. Article 3.3.2 The overall layout of the building, the plane and section design of the single unit and the setting of doors and windows shall be conducive to natural ventilation, and the main rooms shall be protected from the sun from the east and west as much as possible.
Article 3.3.3 The sunny side of the building, especially the east and west windows, shall adopt the full text information system of engineering construction standards
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