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Centralized Control Water Cooled Scroll Chiller For Air Conditioner

EKWD 021/032/043CRSG

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Description

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?Modular Water Source/ Geothermal Heat Pump Unit

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Specifications

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SG standard model for underground water condition

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Basic modules | 　 | EKWD021CRSG???? | EKWD032CRSG???? | EKWD043CRSG???? |
Underground water mode | Nominal Cooling Capacity | kW?? | 77 | 115 | 154 |
Nominal Heating Capacity | kW | 84 | 128 | 169 |
Total Power of Nominal Cooling Capacity | kW | 13.5 | 20.0 | 27.0 |
Total Power of Nominal Heating Capacity | kW | 17.2 | 27.0 | 35.6 |
Water flow | Application side | m3/h | 13.2 | 19.8 | 26.4 |
Heat source side | m3/h | 7.1 | 10.6 | 14.1 |
Water pressure drop | Application side (air conditioner side) | kPa | 21 | 37 | 32 |
Heat source side | kPa | 7 | 6 | 2 |
Heat exchanger type | Application side (evaporator) | 　 | Plate | Shell-and-tube |
Heat source side (condenser) | 　 | Shell-and-tube |
Recommended total
pipe diameter | Evaporator | mm | DN65 | DN65 | DN80 |
Condenser???????????????? | mm | DN50 | DN65 | DN80 |
Volume Adjustment | Steps | 　 | 2 | 3 | 4 |
Regulation mode | 　 | Fuzzy control |
Compressor?????????????? | Model | 　 | Fully hermetic volute |
Lubricant | 　 | Mineral oil (SUNISO 3GS) |
Refrigerant | Flow control method | 　 | Electronic expansion valve |
Category | 　 | R22 |
Dimensions | L x H x W | mm | 1647x1202x632 | 2247x1488x710 |
Unit weight | Net weight | kg | 452 | 703 | 887 |
Transportation weight | kg | 478 | 738 | 922 |
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1, The modular water source/geothermal unit supports applications in all conditions and can switch between multiple modes to fully meet user needs for cooling, heating, and hot water. With an innovative water system, the energy-saving unit delivers an EER as high as 5.7, provides higher energy efficiency when working at a partial workload, and saves energy by 50% compared with other systems after operation in a year.

2, The unit is designed with a comprehensive water system and consists of efficient components carefully selected and designed for a low operation noise. The unit supports fuzzy volume regulation for a narrow range of temperature changes and quickly reaches the set temperature.??????????????????????? In addition, the unit provides hot water at a set temperature as high as 55°C quickly and steadily to meet requirements for comfortable hot water in all places..

3 With modular design, the unit starts step by step, reducing the shock on the grid, and maintenance of a single unit does not affect running of other units. In addition, the unit provides multiple built-in security protection functions, and supports intelligent and centralized control, facilitating daily management.

4, The leading-edge shell design allows the unit to be installed in an outdoor space such as terrace and rooftop without the need of a dedicated room. The unit delivers a long lifecycle and runs for long. Units may be installed in batches according to project progress. One water system that works in multiple modes saves investment on other devices such as heating and hot water supply devices, thereby saving the energy..

5, The 32RT and 43RT basic modules support free combination of master units and slave units to form 1 to 16 units, providing as many as 153 solutions for a cooling capacity as high as 688RT.

6, The unit sends control signals to valves of the water system to easily switch between the water source/geothermal heat pump mode, heat recovery mode, and water heater mode, meeting requirements for cooling, heating, and hot water around the clock.

7, The unit easily implements variable primary flow pumping, which helps the central air conditioning system save energy by 30%.

8, The modular design allows transportation by using elevators and manual forklifts and eliminates the need for hoisting.

9, The modular design allows units to be moved separately and assembled, facilitating installation work.

10, The unit works with efficient volute compressors, shell-and-tube condensers, and dry evaporators, and is carefully designed by EK experts upon strict comprehensive tests for model selection. This ensures that the unit works in a least energy consuming way. The unique evaporator structure and efficient compressor technologies allow the unit to reach an EER as high as 5.7 when working at full workload and to save more energy at a partial workload.

11, The evaporator and condenser use efficient heat exchange copper tubes for thorough evaporation and condensing and a higher efficiency. A baffle plate is mounted inside the evaporator to change the water flow direction, further enhancing heat exchange. The system flow structure is simple, heat exchange is stable, and maintenance is easy.

12, Combinations of modules allow volume regulation for more steps and support precise control by 11RT at each step. This helps the unit stay in the optimal energy conservation state and work efficiently around the clock.

13, The control system of the unit sends out intelligent control signals for the cooling tower, cooling water pumps, and chilled water pumps, automatically regulates the temperature of the cooling water by controlling the fan of the cooling tower, and reduces energy consumption of the cooling water tower. This enables automatic flow control for pumps in line with the transducer, which helps the central air conditioning system save energy by 30%.

14, The unit is built with pressure protection, antifreeze protection, overload protection for compressors, and water flow protection, ensuring security of the unit. The system provides the self diagnosis function. The controller sends an alert upon a fault and displays the fault code.

15, The unit centralizes system management functions, adopts a modular structure, and starts step by step, reducing the shock on the grid. The unit ensures balanced wear for compressors, which increases its lifecycle. Failure of a single compressor in the unit does not affect normal running of other units. Repair and maintenance work of a single unit do not affect running of other units.

16, The unit can implement fuzzy volume regulation according to the set temperature to ensure a narrow range of temperature fluctuation. The unit adopts vibration isolation technologies and multi-plenum noise reduction techniques for strict comparison, selection, and improvement of components. Professional noise reduction design for the structure and pipeline ensures leading-edge vibration and noise performance of the unit.

17, The unit adopts shell design and does not require a dedicated equipment room. It may be installed at any proper place indoors, outdoors, or at rooftop. The shell adopts powder spraying technique with anti-UV coating materials, which fade slowly over a long time and greatly improve anti-erosive capabilities. The unit is small and compact, and may be moved by using an elevator or manual forklift. No professional hoisting devices are required, saving installation expenses. Combinations can be formed with little space during installation, reducing the land area required for placing the device.

18, Modules and relevant devices may be added up at any time according to changes of the application environment, thereby saving initial investment and operating expenses. A design margin is not required during model selection of the master unit, which may be increased at any time. This reduces wastes.

19, The unit is applicable to heat recovery scenarios. It performs precise monitoring on the temperature of the heat recovery circular water (circular water of the condenser), automatically outputs signals, and controls switching between cooling water and heat recovery circular water, thereby implementing optimal heat recovery.

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Competitive Advantage:

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With the help of over 40 years of experience in design of air conditioner units, EK combined the advantages of water source heat pump systems and heat recycler systems to launch the first modular water cooled air conditioner (water source heat pump) unit in the industry, that is, EKWD series modular water source/geothermal heat pump unit. This series unit can work in water chilling mode, water source heat pump mode, water source heat pump + hot water mode, cooling + hot water mode, and hot water mode, thereby meeting customer needs for multiple purposes, energy efficiency, stability, reliability, intelligent control, flexibility, and comfort.

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