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Z1

Z1

.19

ENVIRONMENT AND ENERGY SAVING

Compressed air is clean energy but producing it requires electricity, which costs money and consumes environmental resources.

Below are some indicative averages of the energy ratio of compressed air to its sources.

The values vary as a function of the output of the compressor and other factors.

Specific power:

6.5

W/Nl/min

i.e. it takes 6.5 W to generate 1 normal litre per minute

of compressed air.

Oil factor:

0.254

lit oil/kWh

i.e. 0.254 litres of oil are burnt to produce

1 kW/h.

0.00165 lit oil/Nl/min/h

i.e. 0.00165 litres of oil are burnt to produce

1 Nl/min of compressed air.

CO

2

factor:

0.702

kg/kWh

i.e. 0.702 kg of carbon dioxide is dispersed

into the environment to produce 1 kWh.

0.00456 kg/Nl/min/h

i.e. 0.00456 kg of carbon dioxide is dispersed

into the environment to produce 1 Nl/min. for 1 hour.

Cost of air:

0.00065

/Nl/min/h

i.e. it cost

0.00065 to generate 1 normal litre/minute

of compressed air for one hour.

EXAMPLE:

Flow rate 100 Nl/min,

for

10 hours a day

for

230 days

a year:

Power:

6.5 x 100 Nl/min =

650 W

Electricity consumption:

650 W x 10 hours/day x 230 days/year = 1495.000 Wh =

1495 KWh/year

Oil

burnt equivalent:

0.254 l/kWh x 1495 kWh =

380 litres/year

Carbon dioxide

emissions:

0.702 kg/kWh x 1495 kWh =

1050 kg/year

ENERGY SAVING