RKE Compact DC Inverter Chiller (Air Cooled / Water Cooled) High Energy Savings and Precision Control. High-Spec Model.
RKE750A2-V / RKE1500B2-V(W) /
RKE2200B1-V(W)
- Cooling
Capacity - 2.7 - 8.7 kW (Air Cooled)
6.0 - 10.4 kW (Water Cooled)
- Ambient Temp. Range
- –5 - 43 ℃ (Air Cooled)
2 - 43 ℃ (Water Cooled)
- Operable Temp. Range
(Liquid temp) - 5 - 35 ℃
- Temp. Control Precision
- ±0.1℃
- Minimum 30% Energy Savings AND Precise Temperature Control of ±0.1 ℃! (Compared with our earlier models.)
Features
No Trade-Off between Low Energy and High Accuracy Control-Now Orion Offers Both!
Our inverter controlled compressor responds to fluctuating workloads linearly, achieving highly accurate temperature control while using the least amount of energy.
Plus, thanks to ORION's distinctive capacitycontrol system, accurate temperature control can still be maintained during normally difficult to control low load situations.
(User can choose between "High-accuracy" and "Energy saving" modes in response to low-load conditions.)
As much as 65% Energy Savings Possible
Even compared with power saving ON/OFF type chillers, our DC Inverter control models offer energy savings of 30% at full load.
And when compared with temperature-stable hot gas bypass or PID proportional valve controlled chillers, a 65% reducyion in energy requirements is possible.
Temperature Control Accuracy to ±0.1 ℃※
Precise control even for applications that have severe temperature management requirements.
Its extreme versatility makes it suitable for a wide range of applications, including precision-production-use lasers, analytical devices, semiconductor manufacturing, and many others.
- Under stable load and ambient temperature.
Wide Range of Operating Conditions
Liquid Temp. Control Range: 5 - 35 ℃ allows for wide-ranging applications. High temp. operation possible for piping condensation prevention, etc. Works in an increased range of ambient temperatures※ from –5 to +43 ℃. (Water cooled types from +2 ℃.) This means our chiller can do its job under even harsher working conditions.
- For ambient temperature below 5 ℃, measutrs must be taken to ensure that piping outside the chiller does not freeze.
Built for Improved Ease of Use
Accessories (Sold Separately)
Wealth of Accessories (Sold Separately) and Multi-Function Parameters
Operation and control functions, as well as water temperature control condition monitoring all from your PC via a single cable hookup.
Users have many options to choose from such as Remote control, Heaters, Communication software, and others to further suit their application requirements and operating environment.
- CE certification on built-to-order models is available.
Using the Multi-Function Parameters, users can tailor the chiller operation to best suit their many needs and operating conditions.
| Function | Description |
|---|---|
| Power Outage Recovery Setting | "No recovery", "Auto recovery", "Remote switch priority", and "Either Local or Remote Switch On" options available. |
| Local or Remote Operation | Choose from: "Local Only", "Remote Only", "Both Local/Remote". |
| Alarm Signal Output | Can select signal contacts to be "Open" or "Closed" during an alarm condition. |
| Alarm State Operation Control | Options "Continue" or "Halt" operation of still-working components under warning conditions. |
| Audible Alarm | Audible alarm "Enabled" or "Disabled" during alarm condition. |
| Audible Warning | Audible alarm "Enabled" or "Disabled" during warning condition. |
| Freeze Prevention Operation | To prevent freezing, auto pump operation "Enabled" and "Disabled" options available. |
| Warm-Up Mode | Option to keep pump running even when chiller is off, in order to maintain a (set) minimum liquid temperature. |
| Energy Saving Mode | Option to shut off compressor when cooling load falls below 40% for increased energy savings. |
| Low-Noise Mode | Option to reduce noise output by lowering the maximum fan speed to 40 Hz or lower. (Cooling power reduced about 20%.) |
| 500-Hour Filter Timer | Warning alarm to replace the filter after 500 hours can be enabled or disabled. |
| Liquid Temp High/Low Warning | 5 patterns of water temperature limit setting are available. |
Example of Energy Saving Configuration
Energy Saving Points
Got a Big Heat load? Change to an Inverter Chiller!
RKS1500F-V ⇒ Changing to the RKE1500B2-V
| Energy Saving | 44% |
|---|---|
| Reduced Output of CO₂ | −1,013kg CO2 / Year |
| Effective Savings | 37,050 JPY / Year |
Comparison Conditions
| Compared Models | RKS1500F-V (ON/OFF Control) | RKE1500B2-V (DC Inverter Chiller) |
|---|---|---|
| Set Water Temp. | 20℃ | |
| Average Load | 3.2kW | |
| Operating Time | 10 Hours/Day (250 Days/Year) | |
| Electricity Cost | 15 JPY/kWh | |
Power Consumption Rate Based On Chiller Load Factor
- The power consumption rate is a value achieved when the RKS1500F-V is oprating under 60 Hz rated conditions at 100% (2.6kW) power consumption.
Amount of CO₂ Emission Reduction
- CO₂ emission coefficient used is 0.410, the average of 8 power companies.
Yearly Power Consumption Comparison
Specifications
| Air Cooled | ||||||
|---|---|---|---|---|---|---|
| RKE750A2-V-G1 / G2 (W / casters) |
RKE1500B2-V-G1 / G2 (W / casters) |
RKE2200B1-V-G1 / G2 (W / casters) |
||||
| Performance Specifications |
Cooling Capacity |
Room Temp: 32 ℃, Set Water Temp: 20 ℃※1 |
kW | 2.7 | 5.3 | 8.7 |
| Room Temp: 25 ℃, Set Water Temp: 20 ℃ |
kW | 2.9 | 5.8 | 9.5 | ||
| Ambient Temp. Range | ℃ | –5 - 43 | ||||
| Operating Temp. Range (Liquid Temp.) | ℃ | 5 - 35 | ||||
| Control Precision※4 | ℃ | ±0.1 (Under stable load, ambient temperature and power source.) |
||||
| ±0.5 (When the current load is continuously within ±10%.) |
||||||
| Min. Operating Circulation Rate (50/60 Hz) |
L/min | 10 (Head: 20/30 m) |
12/21 (Head: 50 m) |
28/43 (Head: 50 m) |
||
| Power Specifications |
Power Source※2 | V(Hz) | Three-phase 200±10%(50/60), 220±10%(60) | |||
| Power Consumption※1 | kW | 1.2/1.3, 1.3 | 2.3/2.4, 2.4 | 4.6/4.7, 4.7 | ||
| Electric Current※1 | A | 4.5/5.3, 4.7 | 8.7/9.0, 9.0 | 16/17, 17 | ||
| Power Capacity※3 | kVA | 2.1 | 4.2 | 6.5 | ||
| Breaker Capacity | A | 10 (With heater installed: 15) Current sensitivity: 30 mA, High-speed |
15 (With heater installed: 20) Current sensitivity: 30 mA, High-speed |
30※6 Current sensitivity: 30 mA, High-speed |
||
| Operation Control Method | Compressor Speed Control | |||||
| Equipment Details |
Compressor | Construction | Fully sealed rotary type (Inverter driven) | |||
| Output | kW | 0.7 | 1.7 | |||
| Condenser | Fin and tube heat exchanger | |||||
| Heat exchanger | Construction | Plate type heat exchanger | ||||
| Material | SUS316 (Brazing: Cu) | |||||
| Discharge Pump | Construction | Cascade type | ||||
| Output | kW | 0.25 | 0.40 | 0.75 | ||
| Water Tank Capacity | L | approx. 15 | approx. 20 | |||
| Refrigerant | R410A | |||||
| Charge Amount | kg | 0.75 | 1.10 | 1.40 | ||
| CE Marking | -※7 | Built To Order | ||||
| External Dimensions (HxDxW) | mm | G1: 840×688×400 G2: 927×688×400 |
G1: 879×850×400 G2: 966×850×400 |
G1: 993×970×530 G2: 1080×970×530 |
||
| Product Mass (Dry weight) | kg | G1: 68 / G2: 73 | G1: 96 / G2: 100 | G1: 135 / G2: 140 | ||
| Operating Noise Level (50/60 Hz)※5 | dB | 55/57 | 56/60 | 62/64 | ||
| Water Cooled | |||||
|---|---|---|---|---|---|
| RKE1500B2-VW-G1 / G2 (W / casters) |
RKE2200B1-VW-G1 / G2 (W / casters) |
||||
| Performance Specifications |
Cooling Capacity |
Room Temp: 32 ℃, Set Water Temp: 20 ℃※1 |
kW | 6.0 (Chilled water temp.: 20℃) |
10.4 (Chilled water temp.: 20℃) |
| Room Temp: 25 ℃, Set Water Temp: 20 ℃ |
kW | ||||
| Ambient Temp. Range | ℃ | 2 - 43 | |||
| Operating Temp. Range (Liquid Temp.) | ℃ | 5 - 35 | |||
| Control Precision※4 | ℃ | ±0.1 (Under stable load, ambient temperature and power source.) | |||
| ±0.5 (When the current load is continuously within ±10%.) | |||||
| Min. Operating Circulation Rate (50/60 Hz) | L/min | 12/21 (Head: 50 m) | 28/43 (Head: 50 m) | ||
| Power Specifications |
Power Source※2 | V(Hz) | Three-phase 200±10%(50/60), 220±10%(60) | ||
| Power Consumption※1 | kW | 1.7/1.8, 1.8 | 3.5/3.7, 3.7 | ||
| Electric Current※1 | A | 6.5/7.1, 6.6 | 14/14, 14 | ||
| Power Capacity※3 | kVA | 3.0 | 5.5 | ||
| Breaker Capacity | A | 15 (With heater installed: 20) Current Sensitivity: 30 mA High-Speed Model |
30 (Current sensitivity: 30 mA, High-speed)※6 | ||
| Operation Control Method | Compressor Speed Control | ||||
| Equipment Details |
Compressor | Construction | Fully sealed rotary type (Inverter driven) | ||
| Output | kW | 0.7 | 1.7 | ||
| Condenser | Double pipe water cooling | ||||
| Heat exchanger | Construction | Plate type heat exchanger | |||
| Material | SUS316 (Brazing: Cu) | ||||
| Discharge Pump | Construction | Cascade type | |||
| Output | kW | 0.4 | 0.75 | ||
| Water Tank Capacity | L | approx. 15 | approx. 20 | ||
| Refrigerant | R410A | ||||
| Charged Amount | kg | 0.80 | 1.10 | ||
| CE Marking | Built To Order | ||||
| External Dimensions (HxDxW) | mm | G1: 879×850×400 G2: 966×850×400 |
G1: 993×970×530 G2: 1080×970×530 |
||
| Product Mass (Dry weight) | kg | G1: 95 / G2: 98 | G1: 135 / G2: 140 | ||
| Operating Noise Level (50/60 Hz)※5 | dB | 55 | 59/60 | ||
- For operation on air-cooled machines when the chilled water temperature is 20 ℃ and the ambient temperature is 32 ℃, or for water-cooled machines when the chilled water temperature is 20 ℃ and the cooling water temperature is 32 ℃. Cooling capacity is at least 95% of listed figures.
- Source voltage phase unbalance should be less than ±3%.
- The figure noted is when operating at the highest capacity in the normal operating range.
- Does not include starting times or when the cooling load is too small, in which case the compressor may cycle on and off.
- Operating noise levels are from a position of 1 m in front of the product and at height of 1 m.
- Unit comes with a built-in overload protection breaker.
- CE marking is available on a built-to-order based on the RKE750A1-V and RKE1500B1-V models.
- Liquid (chilled water) that can be used are either clean water and a 30 to 40% ethylene glycol solution. Note that there will be a drop in cooling capasity of 10% if using a 30 to 40% ethylene glycol solution. Altematively, if deionized water is to be used, it should have an electrical conductivity of at least 1 µS/cm.
- Do not use aluminum parts for parts that will be wetted with the chilled water. Electrolytic corrosion of aluminum can cause clogging in the heat exchanger.
- Heat output from the unit (in kW) is approx. 1.3 times that of the cooling capacity.
External Dimensions (Units:mm)
Performance
- Even in the high accuracy mode, if the amount of heat to process is below the minimum level, the compressor will cycle ON and OFF, and may affect the control accuracy.
- If the minimum heat requirement for inverter control is not met and high accuracy temperature control is necessary, please install the optional heater assembly unit, or ask for a special model equipped with a capasity control valve.
Pump-only operation rating.
(For condenser)
