Biomass EXERGY - Our solution for power generation from biomass

In small biomass plants, ORC technology is the ideal choice due to its high efficiency, availability and ability to follow load dependent on fuel supply.

In addition, the elimination of the steam turbine for traditional biomass solutions brings with it a number of maintenance and operational advantages.

The EXERGY solution for power generation from biomass is an ORC module utilizing the Radial Outflow Turbine coupled with a biomass boiler. The ORC module can be used to produce electrical power and thermal power, the latter utilized for combined heat and power production (CHP) purposes such as:

COGENERATION FOR INDUSTRIAL PROCESSES
COGENERATION FOR INDUSTRIAL PROCESSES
DISTRICT OR RESIDENTIAL HEATING
DISTRICT OR RESIDENTIAL HEATING
TRIGENERATION (PRODUCTION OF WARM AND COLD STREAMS FOR HEATING AND COOLING PURPOSES)
TRIGENERATION (PRODUCTION OF WARM AND COLD STREAMS FOR HEATING AND COOLING PURPOSES)
WHY INSTALL A BIOMASS PLANT
  • 1. ELIMINATE OR REDUCE WASTE DISPOSAL


    A biomass power plant utilizes waste organic matters from industrial processing to produce electricity, eliminating the issue and the costs of waste disposal.
  • 2. REDUCE ENERGY COSTS


    Biomass power plants generate electricity from waste organic resources replacing purchased energy, thereby reducing energy costs. 
  • 3. REDUCED OPERATING COSTS


    Reduced energy costs and waste disposal also contributes to reducing operating costs.
  • 4. MINIMIZE DEPENDENCY ON TRADITIONAL ELECTRICITY SYSTEM


    Biomass power plants produce electricity that can directly be employed to power industrial processes or residential needs representing an easier and more reliable access to electricity for those remote or isolated sites with difficult access to the grid.
  • 5. EXPLOIT THE VERSATILITY OF A WASTE RESOURCE


    Biomass plants can produce both electricity and thermal power for heating purposes thus performing two tasks and becoming a very profitable solution for your business.
  • 6. REDUCE ENVIRONMENTAL IMPACT OF THE INDUSTRIAL ACTIVITY


    Biomass power plants utilizing secondary or tertiary waste biomass for power production substitute the use of fossil fuels and thus reduce SOx, NOx and CO2 emissions as well as the amount of waste in landfills. 
Portfolio
Portfolio
2,9MW
PLANTS
PLANTS
5
AVARAGE PLANT SIZE
AVARAGE PLANT SIZE
500kW
OIL SAVED toe/y
OIL SAVED toe/y
4000
CO2 SAVED t/y 
CO2 SAVED t/y 
11000

The biomass feed of the boiler that can be exploited as "fuel" includes for example wood industry leftovers, olive waste or other secondary biomass.
 

An ORC biomass power plant offers several advantages:
POSSIBILITY TO FEED BOTH HEAT AND POWER NEEDS IN ONE SOLUTION
POSSIBILITY TO FEED BOTH HEAT AND POWER NEEDS IN ONE SOLUTION
  • Higher power and efficiency to capital cost ratio
  • Electrical efficiency up to 30%  
PROVEN AND WIDELY APPLIED TECHNOLOGY
PROVEN AND WIDELY APPLIED TECHNOLOGY
  • High reliability
FLEXIBILITY IN BIOMASS FEED QUALITY
FLEXIBILITY IN BIOMASS FEED QUALITY
  • Wider range of application possibilities
  • No need of biomass pre-treatment
SMALL MODULAR AND LIGHTWEIGHT PLANT
SMALL MODULAR AND LIGHTWEIGHT PLANT
  • Easy installation
  • Few civil works required
NO STEAM TURBINE
NO STEAM TURBINE
  • Simpler operations
  • Reduced maintenance
NO WATER CONSUMPTION
NO WATER CONSUMPTION
  • Reduced environmental impact
  • Possibility to locate plant far from water supply
ORC CYCLE FROM BIOMASS

The boiler, via the combustion process, converts the biomass in thermal power to feed the ORC module. The hot exhaust gas warms up the intermediate fluid in a heat exchanger. The ORC-boiler interface circuit transfers the thermal power from the boiler to the ORC evaporator.

The commonly employed intermediate fluids between the boiler and ORC are thermal oil, pressurized water or steam. The interface fluid transfers heat to the organic fluid in the ORC evaporator, where the organic fluid vaporizes. The vaporized fluid then passes to the turbine. Here the vapour expands causing the turbine to spin and create electricity into the generator.