A Novel Multiple Sources Heating System with Thermodynamic Analysis Based on a Biomass-Fired Cogeneration System

The feasibility and benefits of a novel biomass-fired cogeneration system are demonstrated. Different from the traditional heating mode, in the new concept proposed, three heat sources are selected as heating energy through a Li-Br absorption heat pump. Based on a 35MW biomass-fired combined heat and power plant, conduct thermodynamic analysis of the new system to clarify the internal mechanism of its efficiency improvement. The results show that due to the coupling and optimization, the net power generation of the novel system is increased by 1.36MW. Moreover, the total system efficiency and effective electrical efficiency can reach 41.88 and 34.56 percentage points. In terms of overall exergy damage, compared with the reference system, it was reduced by 1.36MW. The exergy efficiency of this heating process increased by 33.05 percentage points. In short, the proposed novel system is proven to be advanced.