Geothermal utilization

Japan, one of the world's most volacanic country, has an abundance of available geothermal energy.
By convertig geothermal energy(hot water) into chilled water through Yazaki's waste heat recovery equipment, it is possible to significantly reduce the energy consumption and CO₂ emissions of existing air conditioners and chillers.

Geothermal utilization

Hotel　（Hot spring heat utilization）

  • Business type
    Hotel
    Model
    Water fired chiller 50RT(2 units)
    Available heat
    502kW(Hot spring)
    Chilled water application
    Hotel lobby, guest room cooling
    Energy saving
    244,300（kWh/year）

Proposal content

Replacing the existing heavy oil-fired absorption chiller with a waste heat utilization machine that used hot spring heat contributed to CO₂ reduction.

Hospital　（Hot spring heat utilization）

  • Business type
    Hospital
    Model
    Water fired chiller 10RT(2 units)
    Available heat
    101kW(Hot spring)
    Chilled water application
    Air conditioning in hospital
    Energy saving
    12,400（kWh/year）

Proposal content

Added a waste heat utilization machine(cooling output 70kW) to the existing electric air conditioner(cooling output 105kW).
Electricity consumption and CO₂ emissions are reduced by covering the base operation of existion equipment with waste heat utilization equipment.

Leather factory　（Geothermal use）

  • Business type
    Leather factory
    Model
    Water fired chiller 30RT
    Available heat
    151kW（Geothermal）
    Chilled water application
    Air conditioning in factory
    Energy saving
    72,900（kWh/year）

Proposal content

Added a waste heat utilization machine(cooling output 105kW)to the existing electric air conditioner(cooling output 175kW).
Electricity consumption and CO₂ emissions are reduced by covering the base operation of existing equipment with waste heat utilization equipment.

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