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Jiangsu issued new policy: every house should be equipped with fresh air system, which will be implemented from July 1!
2021年07月12日 更新 | 共2105人阅读
Recently, Jiangsu Provincial Department of housing and urban rural development organized the revision of the local standard "design standard for thermal environment and energy saving of residential buildings" (hereinafter referred to as the "standard"), which will be implemented from July 1, 2021.
The standard revision mainly improves the following contents.
1. Optimize the indoor thermal environment and improve the quality of residential buildings
The standard further improves the requirements of indoor thermal environment. When heating is not adopted in winter, the average indoor temperature of residential buildings in hot summer and cold winter areas should not be lower than 14 ℃ and 12 ℃ respectively, and the temperature difference between the wall and the inner surface of the outer window should not exceed 4 ℃, so as to reduce the cold radiation to human body. At the same time, the energy-saving requirements of key parts such as external window, household wall and household floor are improved.
2. Add fresh air system to create comfortable and healthy environment
According to the standard, each house should be equipped with fresh air system to improve the indoor air quality. Fresh air fan, household fresh air system or centralized fresh air system can be selected according to local conditions. The influence of local exhaust of kitchen and toilet should be considered in the design of fresh air system.
3. Expand the application of renewable energy and improve building energy efficiency standards
According to the climate characteristics and resource endowments of Jiangsu Province, the energy-saving indexes and technical requirements of residential buildings have been further refined and improved, the application forms and scope of renewable energy buildings have been expanded, the application of renewable energy such as solar photovoltaic system, solar water heating system, air source heat pump system and ground source heat pump system has been promoted, and the dependence on traditional energy has been reduced, Fully support the energy saving rate of residential buildings from 65% to 75%.
Domestic well-known experts highly praised the revised standard. The standard review expert committee headed by National Engineering Survey and design master Xu Wei held that the standard filled the blank of 75% standard for residential building energy saving in hot summer and cold winter areas, and reached the international level as a whole. It was consistent with the principle and standard of residential building energy saving in Jiangsu Province's green building design standard The convergence of directional requirements plays an important role in supporting the high-quality development of green buildings in Jiangsu Province.
The standard revision mainly improves the following contents.
1. Optimize the indoor thermal environment and improve the quality of residential buildings
The standard further improves the requirements of indoor thermal environment. When heating is not adopted in winter, the average indoor temperature of residential buildings in hot summer and cold winter areas should not be lower than 14 ℃ and 12 ℃ respectively, and the temperature difference between the wall and the inner surface of the outer window should not exceed 4 ℃, so as to reduce the cold radiation to human body. At the same time, the energy-saving requirements of key parts such as external window, household wall and household floor are improved.
2. Add fresh air system to create comfortable and healthy environment
According to the standard, each house should be equipped with fresh air system to improve the indoor air quality. Fresh air fan, household fresh air system or centralized fresh air system can be selected according to local conditions. The influence of local exhaust of kitchen and toilet should be considered in the design of fresh air system.
3. Expand the application of renewable energy and improve building energy efficiency standards
According to the climate characteristics and resource endowments of Jiangsu Province, the energy-saving indexes and technical requirements of residential buildings have been further refined and improved, the application forms and scope of renewable energy buildings have been expanded, the application of renewable energy such as solar photovoltaic system, solar water heating system, air source heat pump system and ground source heat pump system has been promoted, and the dependence on traditional energy has been reduced, Fully support the energy saving rate of residential buildings from 65% to 75%.
Domestic well-known experts highly praised the revised standard. The standard review expert committee headed by National Engineering Survey and design master Xu Wei held that the standard filled the blank of 75% standard for residential building energy saving in hot summer and cold winter areas, and reached the international level as a whole. It was consistent with the principle and standard of residential building energy saving in Jiangsu Province's green building design standard The convergence of directional requirements plays an important role in supporting the high-quality development of green buildings in Jiangsu Province.