Natural gas heating technologies: energetic, environmental and economic analysis of modern local technologies in comparison with district heating

Generally, a CHP plant coupled with district heating is considered more efficient than traditional local heating systems from an economic and environmental point of view.This is certainly true for municipal waste CHP plants but for plants fuelled by natural gas the important developments intervened in these last years regarding both boilers (premixed and modulating burners, condensing boilers, etc.), mechanical vapour compression and absorption heat pumps can change the traditional view. At the same time also district heating plants improved.