0
0.2
0.4
0.6
0.8
1
Supply pressure (MPa)
Pressure loss (MPa)
0
0.1
0.05
0.15
0.2
0.25
0.3
Pressure loss ···
Conventional model
Energy Saving Pneumatic System Proposal
• Blowing distance: 100 mm
• Impact pressure: 0.011 MPa
• Cost of electricity: 15 yen/kWh
• Blow time: 10 seconds
• Frequency: 12 times/hour
• Working hours: 10 hours/day
• Working days: 250 days/year
• Units used: 100
• Resulting total working hours: 8,300 hours
For example,
when you
compare
this:
with this:
This is
the result
Conventional
construction
Pressure loss:
0.005
MPa or less
with 0.5 MPa
VMG
(Nozzle size: ø2.5)
Effective
area
6
mm
2
Energy Saving Effects
Valve Construction and Pressure Loss
Straighter flowing fluid
“improves pressure loss!”
When the yearly total working hours spent on air blowing amounts to 8,300 hours, use of conventional models
results in power consumption costs totaling 194,220 yen. When using the SMC system (Blow gun + S coupler
+ Coil tube), however, the yearly cost is reduced to 155,625 yen, for
a total yearly saving of 38,595 yen, or
20% of the total
.
240
220
200
180
160
140
120
100
5,000
6,000
7,000
8,000
9,000
10,000
Total working hours of use
Cost of electricity consumed by
compressor (thousands of yen)
240
220
200
180
160
140
120
100
5,000
6,000
7,000
8,000
9,000
10,000
Total working hours of use
Cost of electricity consumed by compressor
(thousands of yen)
Calculation conditions
Work model
Series
VMG
PAT.PEND
Energy saving valve construction
Balance-poppet valve construction
Effective
area
30
mm
2
S coupler
Coil tube
+
+
Energy saving effects with
Blow gun (VMG)
Blow gun (VMG)
Energy saving effects with
only
Conventional
model
10
% reduction
Amount saved as a result
of energy saving effects
19,422
yen/year
Blow gun only
¥194,220
¥174,798
8,300 hours
¥194,220
Amount saved as a result
of energy saving effects
38,595
yen/year
¥155,625
8,300 hours
20
% reduction
Blow gun + S c Coil tube
Conventional
model
Conventional
model
Features 1
VMG-D.qxd 10.1.15 4:19 PM Page 2
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com
