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R134a Refrigerant Water Cooled Screw Chiller compressors
Overview
Cooling Cpacity range : 243.6~1640.7kW
Refrigerant : R134a
Touch Screen
Dual Screw Compressor
Unit Features
1.Single system flooded evaporator Multi-compressor single-system
design.
The industry-leading single-system flooded evaporator design and
multicompressor single-system design enable the single compressor
system to provide cooling capacity of up to 470 RT. The compressors
start one by one, greatly reducing shock of the startup current on
the grid. In partial load, the dual compressors run by turns,
providing a long life cycle.
2.Oil separation efficiency as high as 99.95%
The air return outlet of the flooded evaporator is directly
connected to the air suction inlet of the compressor. The optimal
built-in oil route lubricating system is equipped with an
innovative external efficient oil separator, which has a unique
structure to change the flow direction and works with a multi-layer
high-density oil filter to deliver the optimal oil separation
effect with efficiency of more than 99.95%. The air return outlet
of the flooded evaporator is directly connected to the air suction
inlet of the compressor. This effectively reduces pressure loss and
ineffective overheat of the air suction pipeline. Such design is
compact, efficient and energy-saving.
3.Environment-friendly R134a refrigerant ,
The refrigerant injection amount is reduced by 50% or more compared
with a traditional flooded unit. The lubricant injection amount is
reduced by 50% or more compared with a traditional flooded unit.
Applicable to heat pump, full heat recovery, and cooling
accumulation conditions.
.
4.Efficient heat exchanger
■ All internal heat exchange pipes use efficient heat exchange
copper pipes with inner and outer
threads to ensure optimal heat exchange flow rate of the
refrigerant and chilling medium, enhance the
heat transfer at the water side and refrigerant side, optimize the
heat transfer efficiency, reduce energy
consumption of the unit, and lower the running expenses.
■ The evaporator adopts the latest efficient flooded design to
efficiently reduce the filling amount of
the refrigerant by 50% or more compared with a traditional flooded
heat exchanger.
■ The unique built-in over-cooling design of the system can fully
avoid hydraulic shock of compressors and improve the cooling
capacity and efficiency of the unit.
■ The multi-level automatic oil return system accurately returns
oil regardless of theliquid level, eliminating impact on heat
exchange efficiency.
■ The standard piping mode provided by the heat exchanger is trough
coupling connection (with short
tube), facilitating field installation. Each evaporator and
condenser is equipped with independent air exhaust and water
drainage devices.
5.Precise and efficient liquid level control
■ The full series adopts liquid level controller with
high-resolution digital display and international famous brand
electronic expansion valve to steadily control the liquid level of
the evaporator at the optimal position so that the unit achieves
the optimal heat exchange effect at any load. This ensures high
performance running of the unit and apparently improves the
efficiency under partial load.
6.Smart Control
■ The large-screen LCD developed by EK is directly connected to the
digital control center, greatly improving efficiency and providing
monitoring, data recording, security protection, and easy
operations.
■ The chilled water outlet temperature is controlled to a precision
of ±0.2oC. Various sensors in the system can accurately transfer
signals and data to the controller so that the controller can
protect unit parts in a timely manner, ensuring reliable running of
the unit.
■ Three-level password protection prevents mis-operation by
non-professional personnel and ensures safe running of the unit. In
addition, multiple protection functions are provided.
■ All running parameters and alerts of the unit can be recorded and
saved.
■ The start/stop of the unit can be remotely controlled and data
can be transmitted over Internet.
7.Centralized control
EK centralized control system adopts the industryleading control
solution. The product configuration
is applicable to the control system solution for the chilled pump,
cooling pump and cooling tower.
Multiple persons are allowed to control and monitor the unit on the
homepage of a Microsoft-based web
browser.