Combined heat power system

A combined heat power system comprising a Rankine cycle, said Rankine cycle using a fluid both in gaseous phase and liquid phase, said Rankine cycle comprising

• an evaporator for evaporating the fluid from liquid phase to gaseous phase;
• an expander for expanding the fluid in gaseous phase provided by the evaporator, the expander being suitable to transform energy from the expansion of the fluid in gaseous phase into mechanical energy;
• a condenser for condensing the fluid from gaseous phase from the expander to liquid phase;
• and
• a fluid pump for pumping the fluid in liquid phase provided by the condenser to the evaporator;
• the system further comprising a heat source providing exhaust gas, said exhaust gas providing thermal energy for evaporating the fluid from liquid phase to gaseous phase by said evaporator, said system further comprising a generator unit for converting mechanical energy from the expander to electrical energy to inject power into a grid or a battery, the expander being a volumetric expander, wherein said expander, said generator unit and said liquid pump are coaxially mounted.