Heavy Duty DC Inverter Chiller
RKE-B (74.4 to 96.0 kW)
Energy-Saving Specs are Top Class in the World! Introducing the RKE-B Series Top-Class Models
RKE22000B-V / RKE30000B-V
- Cooling Capacity
(50/60Hz) - 74.4 to 96.0 kW
(Air Cooled)
- Operable Ambient Temperature Range
- -20 to 45 °C
(Air Cooled)
- Operable Liquid Temperature Range
- 3 to 35 °C
- Temperature Control Precision
- ±0.1℃
- TESC Built In! Three Eco Speed Control offers the ultimate eco-operation!
Features
TESC (Three Eco Speed Control) Built In
The changes in the energy consumption rate follow changes in the load factor. Thanks to TESC being built into the RKE-B Series, it offers even further reductions in power consumption over previous models.
Compressor Speed Control
DC Inverter Drives with Automatic Optimized Operation Judgement.
Fan Speed Control
Automatic Optimized Operation Judgement from the Inverter.
Pump Speed Control
Operates at the minimum speed needed to achieve the required flow rate. Reduces water supply waste.
- The rate of power consumption is a value based on 100% being the RKL-3750V-C1 operating at its rated power consumption (7.6kW), at 60Hz, under the rated operating conditions.
Our units can maintain control at low loads that were previously difficult to work with and as the graph shows, even compared with previous inverter driven chillers, we've achieved energy savings!
Supports Linking of Multiple Units
As many as 4 units can be connected
Using our Central Chiller Controller※, centralized operation of up to 16 units is possible.
- Optional Equipment
Linked Model Example (Number of units)
| HP | Cooling Capacity (kW) |
RKE22000B-V (30HP) |
RKE30000B-V (40HP) |
|---|---|---|---|
| 30 | 74 | 1 | - |
| 40 | 96 | - | 1 |
| 60 | 148 | 2 | - |
| 80 | 192 | - | 2 |
| 100 | 244 | 2 | 1 |
| 120 | 288 | - | 3 |
| 160 | 384 | - | 4 |
Energy Saving
Reduced Energy Consumption Thanks to our DC inverter Drive Compressor
Low Operating Noise
Operating noise of just 65 dB with our low-noise fan and compressor-noise-prevention cover.
Pump is also Inverter Driven
Inverter Drive for the Compressor,
Fan, and Now Also the Pump!
Being able to achieve just the required flow rate eliminates waste, even without bypass-valve control.
Choose the Desired Pump Control Method
In addition to setting the operating frequency, it is also possible to set the flow rate based on an estimated flow rate standard, or set the water pressure. Operation possible at the optimum flow rate or pressure in accordance with the load.
- The noted flow rate is a calculated value. The actual flow rate may differ. If an exact measured flow rate is required, then an external (user supplied) flowgauge should be installed.
Intelligent Touch Panel
Various settings and operating conditions can be visually and intutively chaecked and operated via the touch panel controller. The displayed language cn be changed to English, Japanese or Chinese.
The display language can be changed.
English 
Japanese 
Chinese 
Operation and Monitoring via PC or Sequencer Possible
Communications functions can be utilized through a control program to match your specific application.
Communications Method
USB: 1 Unit, RS-422A: 32 Units, RS-485: 32 Units
Items that can be controlled via PC
- Starting and stopping of individual chiller units.
- Individual operation of chiller discharge pumps.
- Liquid temperature control of individual chillers.
Detailed display functions enable quick recovery!
- Inspection Warning
- Liquid Temperature Warning
- Water Pressure
- Refrigeration Circuit
- Inverter etc.
Specifications
| Model | RKE22000B-V | RKE30000B-V | |||
|---|---|---|---|---|---|
| Performance Specifications |
Cooling Capacity※1 | kW | 74.4 | 96.0 | |
| Heating Capacity※8 | kW | 16.0 | 20.0 | ||
| Operable Ambient Temperature Range |
℃ | –20 to 45 | |||
| Operable liquid Temperature Range |
℃ | 3 to 35 (w/ brine: 0 to 35)※7 | |||
| Control Precision※4 | ℃ | ±0.1 (Energy saving mode: ±2.0) | |||
| Operable Flow Rate Range | L/min | 200 to 460 | |||
| Power Specifications |
Power Source※2 | V(Hz) | Three-phase 200 to 220 ±10% (50/60) | ||
| Power Consumption | kW | 23.9 | 37.2 | ||
| Electric Current※1 | A | 73.6 | 114.9 | ||
| Power Capacity※3 | kVA | 34.1 | 43.3 | ||
| Breaker Capacity※6 | A | 125 | 175 | ||
| Operation Control Method | Compressor speed control | ||||
| Equipment Details |
Compressor | Construction | Fully sealed scroll type | ||
| Output | kW | 7.46 × 2 (Inverter driven) |
11.19 × 2 (Inverter driven) |
||
| Condenser | Fin and tube forced air cooling | ||||
| Heat Exchanger | Construction | Plate type heat exchanger | |||
| Material | SUS316 (Brazing: Cu) | ||||
| Dischage Pump | Construction | Multistage centrifugal immersion type | |||
| Output | kW | 4.0 × 2 (Inverter driven) | |||
| Fan Motor | Output | kW | 0.86 × 2 (Inverter driven) | ||
| Water Tank Capacity | L | Approx. 250 | |||
| Refrigeant | R410A | ||||
| Charged Amount | kg | 6.7 × 2 | |||
| External Dimentions | H | mm | 2190 | ||
| D | mm | 1340 | |||
| W | mm | 2150 | |||
| Unit Mass (dry weight) | kg | 1050 | 1065 | ||
| Operating Noize Level (50/60Hz)※5 | Hz | 63 | 64 | ||
- Operating conditions: Chilled water temp: 20℃, Ambient temp: 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.
- Continuous current load fluctuation within ±10%, and with stable ambient temp and power supply, etc. 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 1m in front of the unit and at a height of 1m.
- Unit comes with a built-in multi-purpose overload and short circuit protection breaker.
- For liquid temperature setting of 0 to 3℃, use a 30 to 40% solution of industrial-use ethylene glycoal.
- At time of startup only. Will differ depending on ambient temperature.
- The recommended liquid (chilled water) than can be used is either clean water or a 30% to 40% ethylene glycol solution. Note that there will be a 10% reduction in cooling capacity if using a 30% to 40% ethylene glycol solution. Alternatively, if deionized water is to be used, it should have an electrical conductivity of at least 1µS/cm.
- Heat output from the product (in kW) is approx. 1.3 times that of the cooling capacity.
External Dimensions (Unit: mm)
RKE22000 / 30000B-V
Performance
Cooling Capacity Diagram
RKE22000B-V
RKE30000B-V
Chilled Water Flow Chart
RKE22000 / 30000B-V
- The illustration shows the actual measured flow rate value when the bypass valve is closed.
- Flow rate changes based on inverter frequency.
- The shaded area indicates the range possible for adjusted frequency value.
- If additives are used, the flow rate characteristics will change due to factors such asthe additive used, the concentration, fluid temp, etc.