Woody biomass utilization

  • Plants such as trees absorb and fix carbon dioxide in the atmosphere through photosynthesis.
    Carbon dioxide is generated when trees are processed and burned as energy, but the carbon dioxide will be absorbed again by the trees in the process of growth if the forest is renewed aftter the trees have been felled.
    By using woody biomass fuel, which has such carbon-neutral characsteristic instead of fossil fuels. It is possible to reduce carbon dioxode and emissions and conribute to the prevention of regional warning.

Transition/Benefitsysystem

Examples by facility

Changes in domestic consumption of wood pellets

Demand for woody biomass energy is increasing aroun the world due to the recent rise in energy prices and the acceleration of the movement toward decarbonization.
Demand for wood pellets, one of the types of woody biomass energy, is expected to continue to grow in order to realize a carbon0-neutral society.

Advantages of using wood pellets

By using wood pellets as a heat source for air conditioners. we can expect to reduce CO₂ emissions and the running costs of air conditioning.

  • Target machine output
    211kW
    Electricity rate
    From Tokyo Electric Power Price Chart（October 2022 forecast）
    Gas rate
    From the Tokyo Gas tariff（October 2022 forecast）

System example of wood pellet fired chiller

System example of wood pellet fired chiller

Dormitory

  • Dormitory
  • Business type
    Dormitory
    Model
    Wood pellet fired chiller(2 units)
    Heat input
    201kW(wood pellet)
    Chilled water application
    Air conditioning in student dormitory
    Energy saving
    171,850（kWh/year）

Proposal content

At the time of construction of the student dormitory, we proposed a wood pellet fired absorption chiller that used local wood as a heat source. Achieving student dormitory air conditioning that reduces electricity consumption and CO₂ emissions.

Town hall

  • Town hall
  • Business type
    Town hall
    Model
    Wood pellet fired chiller(3 units)
    Heat input
    302kW(wood pellet)
    Chilled water application
    Air conditioning in the town hall
    Energy saving
    258,280（kWh/year）

Proposal content

When the town office was rebuilt, an air-conditioning system with a wood pellet fired absorption chiller using local wood pellets as fuel was introduced. Achieved town office air conditioning that reduces electricity consumption and CO₂ emissions.

Hospital

  • Hospital
  • Business type
    Hospital
    Model
    Wood pellet fired chiller(2 units)
    Heat input
    603kW(wood pellet)
    Chilled water application
    Air conditioning in hospital
    Energy saving
    922,400（kWh/year）

Proposal content

Added a wood pellet fired absorption chiller(cooling output: 637kW) to the existing kerosene fired absorption chiller(cooling outpu: 1,337kW). Reduce energy consumption and CO₂ emissions by covering the base operation of existing equipment with wood pellet fired absorption chiller.

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