Initiatives and Track Records

Proposals for reducing electricity bills and CO₂ emissions – Energy saving and decarbonization measures for compressors –

Initiatives Industrial

Energy saving begins with “visualization” of compressor air

Compressors consume a surprisingly large amount of electricity, and are generally said to account for approximately 20 to 25% of the electricity consumption of the entire factory.
Air itself is "free". However, since a compressor is used to produce compressed air, electricity is consumed and electricity costs are incurred. In other words, compressed air is not free.
By taking energy-saving measures (reducing and optimizing compressed air) for compressors, which account for about 1/4 of electricity consumption, you can expect significant energy and cost savings.

We believe that reducing electricity bills through energy conservation is one way to achieve decarbonization (carbon neutrality) in Japan, which is highly dependent on fossil fuels.

Energy saving begins with “visualization” of compressor air

Original data

■ Review of compressor source pressure


If the supply pressure of 0.7MPa is reduced to 0.6MPa, the power consumption will be reduced by approximately 81,579kW, the electricity bill will be reduced by 1.55 million yen per year, and the CO2 reduction will be approximately 36,711kg.



*Calculation basis (our Okazaki factory 75kW compressor)
 CP operating time: 6000h/year・Electricity bill: 19 yen/kWh
Air unit price: 2 yen/m³・CO2 Emission factor: 0.45 kg/kWh

Flowmeters are installed at the base of the compressor, at the factory, and at each line to understand the amount of change in usage.
In addition, by introducing the system, it becomes easier to notice changes in usage and to compare before and after energy-saving measures.

By operating the compressor optimally according to the amount of air used (JIT air supply), efficiency can be improved and waste can be cut.




■ Review of operational methods during busy and off-season periods

■ Criteria for deciding when updating the compressor

■ Indicators for regular compressor maintenance timing




*Calculation basis (our Okazaki factory 75kW compressor)
 CP operating time: 6000h/year・Electricity bill: 19 yen/kWh
Air unit price: 2 yen/m³・CO2 Emission factor: 0.45 kg/kWh


If the filter is clogged at 100kPa, the amount of power lost will be approximately 13,421kW, the annual loss in electricity charges will be 255,000 yen, and the amount of CO2 emissions will be approximately 6,039kg.
 

Factory and line data

Measures down to minute flow rates

Air is colorless, transparent, odorless, and harmless, so the reality is that it is difficult to deal with air leaks. . Installing a flow meter makes it easier to identify leak points.


■ Identifying and repairing air leak piping


If there is a 3mm hole in the pipe, the amount of power lost will be approximately 21,053kW, the loss of electricity bill will be 400,000 yen per year, and the amount of CO2 emissions will be approximately 9,474kg.



*Calculation basis (our Okazaki factory 75kW compressor)
 CP operating time: 6000h/year・Electricity bill: 19 yen/kWh
Air unit price: 2 yen/m³・CO2 Emission factor: 0.45 kg/kWh
 

We engage in corporate activities that are considerate of the global environment and contribute to society through technology that is in harmony with the environment.


SDGs_7_12_13


|CSR|Contribution to SDGs|Introducing the connection between Aichi Tokei Denki's initiatives and Sustainable Development Goals (SDGs)