Cost comparison: Airknife drying system vs. compressed air

Cost comparison: Airknife drying system vs. compressed air

Drying Solutions

Compressed air is an expensive medium. In the distribution of costs for compressed air systems, the energy cost is the biggest cost. Huge savings can be achieved by avoiding the inappropriate use of compressed air.

Of all applications with compressed air, drying is the least efficient. Apart from the energy consumption and cost of filtering oil and condensate the maintenance costs for continuous operating compressor can increase considerably.

A comparison between an airknife drying system and a compressed air system shows that the airknife systems will produce considerable savings on an annual basis.

 
AIRKNIFE DRYING SYSTEM
COMPRESSED AIR

AREA

# Flat Jet Nozzles

 

16

# airknives

4

 

Length

200 mm

50 mm

Total Area

800 mm²

800 mm²

USEAGE

Hours/shift

8

8

Shift/week

5

5

Weeks/year

48

48

Hours/week

40

40

Total Hours

1.920

1.920

COST

Flow/nozzle @ 5 Bar

 

 

 

36 m³/h

Total flow/hour

576 m³/h

Cost to produce 1m³

0,015 €

Power installed

7,5 kW

 

 

 

Power absorbed

5,5 kW

Cost to produce 1kWh (1)

0,12 €

Operational Cost/hour

0,66 €

8,64 €

Operational Cost/week

26,4 €

345,6 €

Operational Cost/year

1.267,2 €

16.588,8 €

   

Annual saving

€ 15.321,60

 
(1) Estimated production cost of compressed air, taking into account the consumption, maintenance, etc.