Design standard for energy efficiency of residential buildings in Hebei (75%)

[DB13(J) 185-2020]

This Hebei Province Engineering Construction Standard “Design standard for energy efficiency of residential buildings(75%)” is managed by Hebei Provincial Construction Standardization Compilation Research Center,and edited by NORENDAR international Ltd., and NGreen Architectural Design Co. Ltd.,which has been approved by the Hebei Provincial Department of Housing and Urban-Rural Development to organize relevant departments and experts, and is now promulgated as the Hebei Provincial Construction Standards. The standard numbered DB13(J) 185-2020 was implemented from Jan 1st 2021. The energy efficiency of residential buildings in Hebei Province has increased to 75%. According to the requirements of different climate zone, window-to-wall area ratios and floor heights, the K value for external windows is limited from 1.4 to 2.2 W/m2・K.

http://zfcxjst.hebei.gov.cn/cszsdw/bb/tfwj/202009/t20200929_291018.html