Jilin Design Standard for Energy Efficiency of Residential Buildings (Energy efficiency 75%)

[DB22/T 5034-2019]

This Jilin Province Engineering Construction Standard “Jilin Residential Building Energy Efficiency Design Standard” is managed by Jilin Provincial Construction Standardization Management Office,and edited by Jilin Province JianYuan Design Group Co., Ltd.,which has been approved by the Jilin Provincial Department of Housing and Urban-Rural Development and the Jilin Provincial Market Supervision Administration to organize relevant departments and experts, and is now promulgated as the Jilin Provincial Construction Standards. The standard numbered DB22∕T 5034-2019 was implemented from Dec 5th 2019, which means the energy conservation standard has been further improved in this area. The standard increases the energy efficiency of residential buildings in Jilin Province from 65% 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 to1.9 W/m2・K.