Step 2 new for Compressed Air Analysis : Measurement of Compressed energy costs
To accurately measure the specific performance of a compressed air system, a measurement interval of at least seven days is recommended, as it take account into diverse operating conditions and ensures reliable data.
Example of a 2 compressor system measurement
Specific power of compressor 1
= active power meter_1/VD 500_1
= 17.472 kWh/145.600 m³ = 0.12 kWh/m³
Specific power of compressor 2
= active power meter_2/VD 500_2
= 4.368 kWh/27.300 m³ = 0.16 kWh/m³
Total specific power
= (Compressor energy 1 + Compressor energy 2)/ meter reading VA 500
= (17.472 kWh + 4.368 kWh)/ 172.900m³
= 0.126 kWh/m³
Basing on a operating hour of 8h/day and 26 days/month, then:
Compressed air energy costs per month
= 0.3370MYR/kWh x 0.126 kWh/m³ x 172.900m³ x 8h/day x 26 days
= 1527.07MYR
As compressed air consists around of 75% cost of generation, then the cost of generation is approximately 2036.09 MYR.
To effectively monitor the condition of the system, the following sensors are used:
- IAC 500 - Measures atmospheric pressure, humidity and temperature.
- CS PM 5110 - Measures current consumption and active power
- VD 500 - For volume flow on wet site of compressor
- FA 500 - Dew point measurement immediate reaction in case of dryer failure, avoiding corrosion and machine breakdowns.
- VA 500 - Achieve accurate flow measurements, optimize energy costs and leakage monitoring.