Potential for Energy Conservation in China's Commercial Buildings Energy Consumption is Much Higher than International Norms 188 kwh/m2.a in Beijing 135 kwh/m2.a in Japan Big Difference among Similar Buildings energy audits for 16 luxury hotels in Beijing highest energy consumption intensity is three times the lowest Big Difference between Reality and Potential bad management,lack of automatic systems,and design failures
Potential for Energy Conservation in China’s Commercial Buildings Energy Consumption is Much Higher than International Norms 188 kwh/m2a in Beijing 135 kwh/m2a in Japan Big Difference among Similar Buildings energy audits for 16 luxury hotels in Beijing highest energy consumption intensity is three times the lowest Big Difference between Reality and Potential bad management, lack of automatic systems, and design failures
Commercial Building Big Differences among Similar Buildings 160 120 80 $ 40 0 12345678910111213141516 hotel Source:Tsinghua Tongfang Human Environment Engineering Company
Commercial Building Big Differences among Similar Buildings 0 40 80 120 160 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 hotel e n erg y c o n s u m ptio n in d e x (Y u a n/m 2 ) ﹩ ＄ Source: Tsinghua Tongfang Human Environment Engineering Company
Commercial Buildings Economic Analysis of Different Improvements Investment Return Return Time Management $1 $10~20 1~2 months Replace Fans and Pumps $1 $0.8≈1.0 1~1.2 years Add Automatic Control Systems $1 $0.3≈0.5 2~3 years Retrofit Whole Systems $1 $0.2~0.4 3~5 years Retrofit Construction Material $1 $0.1~0.2 5~10 years Source:Tsinghua Tongfang Human Environment Engineering Company
Commercial Buildings Economic Analysis of Different Improvements Investment Return Return Time Management $ 1 $ 10~20 1~2 months Replace Fans and Pumps $ 1 $ 0.8~1.0 1~1.2 years Add Automatic Control Systems $ 1 $ 0.3~0.5 2~3 years Retrofit Whole Systems $ 1 $ 0.2~0.4 3~5 years Retrofit Construction Material $ 1 $ 0.1~0.2 5~10 years Source: Tsinghua Tongfang Human Environment Engineering Company