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Compressed air consumption monitoring

 

 

The air, an expensive good

Even though the air can be found around us without any problem and completely free of charge, its use in the industry is a problem, if we talk about energy. From a simple tool running on air, to the most complex machine. A large number of devices, surround the industry with their air-filled pipes.

According to a recent study by the U.S. Department of Energy, in a typical industrial facility, approximately 10% of the electricity consumed is consumed for the generation of compressed air, and may even exceed 30%.

 

 
 

 

And the leaks?

Numbers are frightening even with the ideal situation with all the compressed air being used by the machines, but reality is never ideal. There are leaks in all installations, and although some of them are unavoidable, when produced in terminal elements, valves, fittings, actuators, etc., many others are produced in the pipes themselves and in defective elements of the installation.

Hole diameter (mm)Looses at 7,0 bar (l/s) Power consumption (KW)Yearly consumption (KWh)Yearly loose costs (€)
0,80,20,160078
110,31.600208
1,53,116.000780
3113,521.0002.730
526,78,349.8006.474
645,81590.00011.700
1010537222.00028.860


As may be seen in the above table, this type of leakage cannot be ignored, a simple 3mm hole in a compressed air line, can reach an expense of about 3000€ a year.

Optimization of the pressure used

Another of the points lagging behind in the industry, is in the pressure. The optimization in the working pressure, could avoid unnecessary costs to the industries. Many times, due to the above-mentioned leaks or bad installations, is established a higher pressure than that would be necessary.

 Consumption for a cylinder (7 bar)  Consumption for a cylinder (5,5 bar)
 Pressure (bar)75,5
Cylinder diameter (mm)5050
 Amount of cylinders1010
 Cylinder stroke (mm)400400
 Cycles/min55
 Air cost (€/Nm^3)0,10,1
Working hours/day1616
 Working hours/year250250
Nl/min628510
Nm^3/year150.720122.460
€/hour3,773,06
€/year15.07212.246


A bad management of the working pressure, causes an increase in consumption and a major deterioration of the installation for the generating part of the compressed air (Compressor, filters, etc.), the conveyor (Pipes), and the actuators.
 

 
 

 

Monitoring as tool for cost reduction


Today there is nothing that cannot be monitored or anything that cannot be controlled. Compressed air does not escape of this trend, from the flow to the pressure, measures that can help us detect leaks, optimize the working pressure and have a history of the air consumed and the energy we spend to produce it.
 

 
 

 
In Muutech we are experts in this type of measures and every day we are learning more. The combination of different types of flow sensors, pressure and consumption, helps maintain a more comprehensive control of compressed air facilities, offering the possibility to detect possible leaks, consumption and even malfunctioning parts.

Complementing the sensors, we provide a software solution based on Zabbix, able to handle all this data, obtain relations between them and show the data that may be of most interest for a process.

In general, Muutech's job is to monitor pneumatic installations information systems or production lines in a centralized and simple way.
 
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Muutech
Monitoring Solutions S.L.

Ed. Consorcio Zona Franca OF1 - Oficina C2
Área Portuaria de Bouzas s/n
36208 Vigo (Pontevedra) - SPAIN

Phone: +34 886 311 711
info@muutech.com

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