Geothermal utilization

Overview

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.

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.