next series oil-flooded compressors

High efficiency and Energy saving
,
11- 37kW
,
Evolution type of Air Compressor… Collaboration of economic
Series
efficiency with environmental performance
Higher economic efficiency and lower environmental burden... Technical challenge for this contradicting target is the most important
mission. HITACHI, accumulating technology for long years, quickly answers the needs of the age.
HITACHI strived to enhance the product line, for example, adding NEXT series which is the advanced energy saving compressor
seeking for the environmental performance to
which has already established the reputation.
Hitachi as the company to answer the needs from industries which are going after further development. Hitachi will continuously provide
advanced compressors as before with the new technologies as a core competence based on the customer satisfaction first.
Low pressure drop design
Big size air intake filter, Oil separator and cooler are installed.
Minimized the energy loss from unit pressure loss to maximize the energy saving performance.
Margin up with big size filter
Air intake filter is enlarged by one-size.
Effective filtration area ratio of air intake filter
(comparison with conventional model 2000 series)
11・15kW
1 Size up
150%
231%
22kW
Conventional
2000 series
NEXT series
37kW
126%
Long and simple maintenance
Easy check and maintenance is achieved by locating maintenance parts such as filter or regulator valves inside the removal front door.
● 8 year overhauling period
● 2 year exchange period for the lubricant
Overhauling period for Compressor
block (air end) is 8 years because of
the matching of the high load duty
bearing system and lubricant filtration
system with high precision.
Compressor oil, “NEW HISCREW OIL2000” with the
highest class durability is applied. Oil change period is
2 years.
Topping up period is also elongated by reducing oil
consumption.
● Oil separator
● Big size air intake filter
Spin-on type oil separator is adopted for
easy maintenance.
Cartridge type filter is adopted. Cleaning maintenance
period is elongated comparing to conventional models
2000 series by the combination of bigger size filter and
high filtration ratio which is achieved by 2 step method
of centrifugal separation and filtration.
Simple operation
Simple and easy-look instrumental panel is newly developed.
ECOMODE, PQ wide mode and remote control switching can be done on the instrumental
panel.
Additionally, in case of trouble, the information on the trouble is shown on the monitor and
quick trouble shooting can be taken.
● One-touch setting for target pressure setting/change.
Target pressure change for energy saving can be done on the instrumental panel.
● Instantaneous Power Interruption (IPI) restart function is standard.
Automatic restart is available after instantaneous power interruption.
(Standard for V type and M type)
● Cascade vector control logic by Hitachi original technology and PID control enable both high response and stability.
The control logic of variable speed control for V plus is all Hitachi uniquely developed.
The system can control discharge pressure within plus/minus 0.01 MPa, achieve high response performance and bring out the high
load following capability and stability.
Option
● High Grade (HG) option
・Enables energy saving functions such as schedule operation or lead-lag.
・Enables check the operation condition and various settings on LCD monitor.
Standard Specification
1 1- 37kW M type/S type
Cooling method
Air cooled
Model M type
OSP-11M5AN
OSP-15M5AN
OSP-22M5AN
OSP-37M5AN
S type
-
OSP-15S5AN
OSP-22S5AN
OSP-37S5AN
Motor output
kW
11
15
22
37
Discharge pressure
MPa
0.85
0.85
0.7
0.85
0.7
0.85
Capacity
m3/min
1.6
2.1
4.0
3.7
7.2
6.6
Item
Dimensions (W×D×H)
930×770×1,250
mm
Weight
1,200×1,100×1,650
590
830
350
340
kg
1,000×1,000×1,500
Note:
5. U type capacity control for 22 - 37kW M/S type is optional so
recommended size (or larger) air tank must be installed. In order to gain
enough energy saving effect from ECOMODE, recommended sized
(or larger) air tank is required to be installed.
Also, M type cannot run with U type fixed operation.
1. Capacity is the converted value at its inlet condition.
2. Discharge pressure shows in Gauge.
3. Motor output shows rating.
4. Discharge temperature may vary according to environment condition.
6. Leakage breaker is out of the scope and should be supplied by customer.
7.Hitachi may make improvements and/or changes in the appearance and / or
specifications described in this publication at anytime without notice.
11- 37kW Vplus (VSD)
Cooling method
Air cooled
Model
Item
Motor output
Rating
OSP-11VAN
OSP-15VAN
OSP-22VAN
OSP-37VAN
11
15
22
37
kW
Discharge
Pressure
MPa
Capacity
m3/min
0.85
0.7
1.6
2.1
4.0
6.8
Discharge
PQ wide Pressure
mode
Capacity
MPa
0.7
0.9
0.7
0.9
0.6
0.85
0.6
0.85
m3/min
1.75
1.5
2.35
2.0
4.2
3.5
7.1
6.2
Dimensions (W×D×H)
mm
Weight
kg
930×770×1,250
345
360
1,000×1,000×1,500
1,200×1,100×1,650
460
630
Note:
1. Capacity is the converted value at its inlet condition.
6. Leakage breaker is out of the scope and should be supplied by customer.
2. Discharge pressure shows in Gauge.
3. Motor output shows rating.
7.Hitachi may make improvements and/or changes in the appearance and / or
specifications described in this publication at anytime without notice.
4. Discharge temperature may vary according to environment condition.
8. Earth line should be independent line.
5. For V plus, when PQ wide mode is ON, separate dryer and/or filter may
have to be sized up. Contact Hitachi authorized distributor/dealer for details.
9. Imbalance between each phase of power supply must be within 1%. When
imbalance of input current at rated load operation exceeds 20%, AC reactor
for improvement of power cooperative at the power supply input line.
(Variable motor rotation speed control)
Variable speed control to bring out energy saving effect.
Evolutional system of NEXT generation to save all the wasting electrical consumption.
Vplus is variable speed control system to adjust to
necessary air flow demand.
Compared to conventional fixed speed models, Vplus controls the air capacity following the necessary air demand. So there is almost no
wasting electricity and achieves energy consumption savings.
Fixed Speed
Vplus 37kW model
1,120rpm
2.1m /min
3
2.1m3/min
11kW
2,135rpm
4.0m3/min
4.0m3/min
3,840rpm
7.2m3/min
7.2m /min
3
Conservation of discharge pressure
Stable discharge pressure control
enables to supply necessary air flow
at necessary pressure.
(JP No. 3262011: Japan regional award)
Because of the stable discharge pressure control which precisely
maintains the pressure within plus/minus 0.01MPa, the necessary
and optimal pressure air can be supplied efficiently.
Additionally, pressure setting can be done by 0.01MPa for significant
energy saving.
Mtype
Stype
（MPa）
Energy saving effect
Pressure
（MPa）
0.65
0.69
Pressure
Unique control logic enables to maintain the set pressure even
during the low load operation. Because the normal variable speed
control should have pressure under shoot when low load operation
or automatic starting, target pressure should be set in advance
whereas Vplus can surely save energy consumption with the
conservation of discharge pressure control function.
0.59
Conservation function of discharge pressure
0.6
Stable discharge
Constant pressure
control area
Normal VSD control
Pressure undershoot
±0.01MPa
（Pressure control）
Time
PQ Wide Mode to enlarge the working range
(JP No. 3516108 and others: Japan regional award)
PQ wide mode adjust automatically the maximum rotation speed of the compressor and enables to increase discharge air flow.
The compressor can run wider pressure range (P) and Air flow range (Q) compared to conventional variable speed control compressors.
Capacity table for PQ wide mode
Unit：m3/min
（MPa）
0.9
Pressure increase
Discharge pressure
MPa
0.5
0.6
0.7
0.83
0.9
11kW
1.75
1.75
1.75
1.6
1.5
15kW
2.35
2.35
2.35
2.1
2.0
22-37kW
Model
Discharge pressure
MPa
0.45
0.50
0.60
0.70
0.85
22kW
4.2
4.2
4.2
4.0
3.5
37kW
7.1
7.1
7.1
6.8
6.2
0.7
Pressure
Model
0.6
0.5
0.45
Conventional VSD
Pressure decrease
0
Air consumption ratio
Capacity increase
11-15kW
100 105（％）
Conventional VSD
(Fixed motor rotation speed control)
Still high efficiency with the fixed speed control.
M type has AUTO start /stop function and S type is standard model with continual running.
ECOMODE
● Energy saving operation control system, ECOMODE,
Cut off pressure
(Start unloading)
→
Pressure
is equipped as standard.
Cut off pressure is automatically reduced in accordance to load ratio of
demand side.
Cut the unnecessary running for increase of pressure and achieve energy
saving operation.
Cat in pressure
(Start loading)
Cut off pressure is automatically reduced
Load
Unload
Time→
Energy saving max.3%
Comparison of capacity control/energy saving characteristics among V, M and S type.
Capacity control
Type
Characteristics
Comparison/effect
Type
U type (suction throttle valve)
Discharge air capacity is controlled by nonstep
control of open ratio of the suction throttle valve.
Pressure fluctuation small
Energy saving small
S type
M type
I type (air purge)
Discharge air capacity is controlled by 0% or 100% open
of the suction throttle valve.
For low load ratio operation, shaft power input is reduced
by decreasing the pressure inside the oil tank/case.
Comparing to U type
Pressure fluctuation big
Energy saving big
S type
M type
V type
V plus
P type (motor auto start/stop)
Discharge air capacity is controlled by automatic motor
stop and restart according to pressure settings.
Comparing to I type
Pressure fluctuation big
Energy saving big
M type
V type
V plus
V type (variable speed control)
Discharge air capacity is controlled by variable motor
rotation speed according to the pressure settings.
V type
V plus
＊
Wide range of capacity setting is available for each pressure.
PQ wide mode Air capacity can be increased by max. 5% for low pressure setting.
＊ V type is Optional for 22kW and 37kW models.
Pressure fluctuation very small
Energy saving maximum
Pressure fluctuation very small
Energy saving maximum
V plus
Energy saving characteristics
Power consumption rate (%)
Hitachi always provides with advanced compressor. HISCREW Vplus with the proven performance is further enhanced.
Reference data of 37kW typical model
100
● Example of annual energy consumption (air consumption 50%)
90
Example: 37kW
80
60
Calculation condition
●
6,000 hr/year operation.
(with ECOMODE for M,S type)
●
Pressure(at compressor outlet)
: 0.6MPa,
60kWh difference
50
200
40
Conventional modulation control
Conventional modulation ＋ purge control
HISCREW NEXT Stype+ECOMODE
HISCREW NEXT Mtype+ECOMODE
HISCREW NEXT Vplus
30
20
10
0
,
300
70
0
10
20
30
40
50
60
70
80
90
230
kWh
100
70kWh difference
170
kWh
0
100
100
: 0.7MPa,
Modulation control: 0.7MPa
●
Energy consumption of auxiliary
devices (cooling fan, dryer etc) is
NOT included.
kWh
Conventional
modulation
control
Air consumption rate (%)
System setup (JP No. 3547314 and others)
Hitachi unique system setup with Vplus centralized flexibly answers the needs for energy saving, providing total merit as differential.
● V-M Combination system
● Single-V system Multi-V system
If the system consists of 2 or 3 compressors, Hitachi V-M
combination system is suitable. Hitachi V-M combination
system, that divides one unit into 2, brings a big merit.
Other than V-M combination system, it is possible to save energy
consumption with any combinations such as Single-V multi-unit
control system or Multi-V multi-unit control system etc.
Example effects of V-M combination system (reference data)
Initial Investment(%)
(Calculation condition: 6,000hr/year running)
100
25%
50
0
75kW
37kW
V-M combination system
Power consumption ratio (%)
1 Energy consumption has similar characteristics as 75kW Vplus.
2 Save 25% of the initial investment.
3 Reduce power consumption by 39% and 160kWh/year at 60% load ratio for 0.6MPa.
200
100
0
Conventional
modulation
100
200
Air consumption rate (%)
China
Hitachi (China) Ltd.
18th Floor Beijing Fortune Building
5 Dong San Huan Bei Lu
Chao Yang District,
Beijing 100004
TEL : +86 (10) 6590-8111
FAX : +86 (10) 6590-8110
(Shanghai Office)
(Hitachi (Shanghai) Trading Co., Ltd.)
12th Floor, Rui Jin Building
No.205, Maoming Road (S)
Shanghai, 200020
TEL : +86 (21) 6472-1002
FAX : +86 (21) 6472-4990
(Guangzhou Branch)
3406, Office Tower, CITIC Plaza
233 TianHe North Road,
Guangzhou 510613
TEL : +86 (20) 8752-1289
FAX : +86 (20) 8752-1301
Indonesia
Hitachi Asia Ltd. (Jakarta Office)
10th Floor, Mid Plaza 1, JL. Jend.
Sudirman Kav. 10-11, Jakarta 10220
TEL : +62 (21) 574-4313
FAX : +62 (21) 574-4312
Thailand
Hitachi Asia (Thailand) Co., Ltd.
18th Floor, Ramaland Building, 952
Rama IV Road Bangrak, Bangkok 10500
TEL : +66 (2) 632-9292
FAX : +66 (2) 632-9299
Malaysia
Hitachi Asia (Malaysia) Sdn. Bhd.
Suite 17.3, Level 17, Menara IMC (Letter Box
No.5) No. 8 Jalan Sultan Ismail, 50250,
Kuala Lumpur
TEL : +60 (3) 2031-8751
FAX : +60 (3) 2031-8758
Vietnam
Hitachi Asia Ltd. (Ho Chi Minh City Office)
7th Floor, The Landmark, 5B Ton Duc Thang
Street District 1, Ho Chi Minh City
TEL : +84 (8) 829-9725
FAX : +84 (8) 829-9729
(Ha Noi Office)
Sun Red River Bldg., 6th Floor,
23 Phan Chu Trinh Street
Hoan Kiem District Hanoi
TEL : +84 (4) 933-3123
FAX : +84 (4) 933-3125
Hitachi East Asia Ltd.
4th Floor, North Tower World
Finance Centre, Harbour City, Canton
Road, Tsim Sha Tsui, Kowloon Hong Kong.
TEL : +852 2735-9218
FAX : +852 2735-6793
Singapore
Hitachi Asia Ltd.
Power & Industrial Systems Group
24 Jurong Port Road, #03-05 Cwt Distripark,
Office Block, Singapore 619097
TEL : +65-6305-7400
FAX : +65-6305-7401
(Taipei Branch)
3rd Floor, Hung Kuo Building
No.167 Tun-Hwa North Road,
Taipei (105) Taiwan
TEL : +886 (2) 2718-3666
FAX : +886 (2) 2718-8180
Philippines
Hitachi Asia Ltd. (Philippines Branch)
25th Floor, Pacific Star Building, Cor. Makati & Sen.
Gil. Puyat Ave., Makati, Metro Manila
TEL : +63 (2) 819-7528, -7529
FAX : +63 (2) 819-7539