High efficiency and Energy saving kW

Transcription

1 High efficiency and Energy saving 11-37kW,,

2 Evolution type of Air Compressor Collaboration of economic efficiency with environmental performance Series 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 which NEXT series 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 2 series) Conventional 2 series 1 Size up NEXT series 11 15kW 22kW 37kW 15% 126% 231% 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 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. 2 year exchange period for the lubricant Compressor oil, NEW HISCREW OIL2 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 Spin-on type oil separator is adopted for easy maintenance. Big size air intake filter Cartridge type filter is adopted. Cleaning maintenance period is elongated comparing to conventional models 2 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 is all Hitachi uniquely developed. The system can control discharge pressure within plus/minus.1 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.

3 Standard Specification 11-37kW M type S type Cooling method Air cooled M type OSP-11M5AN OSP-15M5AN OSP-22M5AN OSP-37M5AN Item S type - OSP-15S5AN OSP-22S5AN OSP-37S5AN Motor output kw Discharge pressure MPa.7.7 Capacity m 3 /min Dimensions (W D H) mm ,25 1, 1, 1,5 1,2 1, 1,65 Weight kg Note: 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. 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. 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 kW Vplus (VSD) Cooling method Air cooled Item OSP-11VAN OSP-15VAN OSP-22VAN OSP-37VAN Motor output kw Rating Discharge Capacity MPa m 3 /min PQ wide mode Discharge Capacity MPa m 3 /min Dimensions (W D H) mm ,25 1, 1, 1,5 1,2 1, 1,65 Weight kg Note: 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. 5. For, when PQ wide mode is ON, separate dryer and/or filter may have to be sized up. Contact Hitachi authorized distributor/dealer for details. 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. 8. Earth line should be independent line. 9. Imbalance between each phase of power supply must be within 1%. When imbalance of input current at rated load operation exceeds 2%, AC reactor for improvement of power cooperative at the power supply input line.

4 (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 2.1m 3 /min 11kW 4.m 3 /min 7.2m 3 /min 1,12rpm 2,135rpm 3,84rpm 2.1m 3 /min 4.m 3 /min 7.2m 3 /min Stable discharge pressure control enables to supply necessary air flow at necessary pressure. Because of the stable discharge pressure control which precisely maintains the pressure within plus/minus.1mpa, the necessary and optimal pressure air can be supplied efficiently. Additionally, pressure setting can be done by.1mpa for significant energy saving. Conservation of discharge pressure (JP No : Japan regional award) 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. MPa.69 Mtype Stype Energy saving effect MPa.65 Conservation function of discharge pressure.59 Stable discharge control ±.1MPa.6 Constant pressure control area Normal VSD control undershoot Time PQ Wide Mode to enlarge the working range (JP No 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. MPa Capacity table for PQ wide mode kW Discharge pressure MPa.5 11kW 15kW 22-37kW Discharge pressure MPa.45 22kW 37kW Unit m 3 /min increase Conventional VSD decrease Capacity increase 15 Air consumption ratio Conventional VSD

5 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, 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. Capacity control (Fixed motor rotation speed control) Cut off pressure (Start unloading) Cat in pressure (Start loading) Cut off pressure is automatically reduced Load Unload Energy saving max.3% Time Type Characteristics Comparison/effect Type U type (suction throttle valve) Discharge air capacity is controlled by nonstep fluctuation small control of open ratio of the suction throttle valve. Energy saving small S M I type (air purge) P type (motor auto start/stop) type. PQ Discharge air capacity is controlled by % or % open Comparing to U of the suction throttle valve. fluctuation big For low load ratio operation, shaft power input is reduced by decreasing the pressure inside the oil tank/case. Energy saving big Comparing to I Discharge air capacity is controlled by automatic motor fluctuation big stop and restart according to pressure settings. Energy saving big S M M V type V type Discharge air capacity is controlled by variable motor fluctuation very small V type (variable speed control) rotation speed according to the pressure settings. Energy saving maximum V type Wide range of capacity setting is available for each pressure. fluctuation very small wide mode Air capacity can be increased by max. 5% for low pressure setting. Energy saving maximum Comparison of capacity control/energy saving characteristics among V, M and S V type is Optional for 22kW and 37kW models. Energy saving characteristics Hitachi always provides with advanced compressor. HISCREW Vplus with the proven performance is further enhanced. Power consumption rate (%) Reference data of 37kW typical model 4 3 Conventional modulation control Conventional modulation purge control HISCREW NEXT Stype+ECOMODE 2 HISCREW NEXT Mtype+ECOMODE 1 HISCREW NEXT Vplus Air consumption rate (%) Example of annual energy consumption (air consumption 5%) Example: 37kW Conventional modulation control, 6kWh difference 17 7kWh difference Calculation condition 6, hr/year operation. (with ECOMODE for M,S type) (at compressor outlet) :.6MPa :.7MPa Modulation control:.7mpa Energy consumption of auxiliary devices (cooling fan, dryer etc) is NOT included. System setup (JP No 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 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. Example effects of V-M combination system (reference data) Single-V system Multi-V system 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. Energy consumption has similar characteristics as 75kW Vplus. Save 25% of the initial investment. Reduce power consumption by 39% and 16kWh/year at 6% load ratio for.6mpa. (Calculation condition: 6,hr/year running) Initial Investment(%) 5 75kW 25% 37kW V-M combination system Power consumption ratio (%) 2 Conventional modulation 2 Air consumption rate (%)

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