sustainable
ease
pressure
biomass
resources
investments
must
applied. Thus,the concept of 4th Generation District Heating (4GDH) has been mentioned. Compared to the former three generations, 4GDH meets the challenge of more energy efficient buildings and is an integrated part of the operation of smart energy systems, i.e.integrated smart electricity, gas and thermal grids [2]. Therefore, Renewable energy and building integrated design has become a trend. The development experience of the world is worth for inspiring.