Maglev Water-cooled Centrifugal Chiller

Maximum energy efficiency, oil-free operation, COP＞6，low total lifecycle cost

The Maglev Water-cooled Centrifugal Chiller represents the pinnacle of central air conditioning and process cooling technology. By utilizing industry-leading magnetic levitation oil-free technology, the system eliminates the complex lubrication oil systems found in traditional compressors. With ultra-high energy efficiency and exceptional stability, this product is widely used in large commercial complexes, data centers, hospitals, and high-end manufacturing, dedicated to creating a green and low-carbon temperature control environment for customers.

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Product Advantages

Core Technologies

Features active magnetic bearing technology to eliminate mechanical friction losses, boosting system energy efficiency by over 30%.

Employs a direct-drive configuration between the motor and compressor impeller—eliminating the need for speed-increasing gears—to achieve high power density, a compact footprint, design efficiency exceeding 98%, and stepless speed control.

Boasts an efficiency of over 83%, delivering a high single-stage compression ratio and a wide range of high-efficiency operation.

Precisely adjusts rotational speed in real-time based on load conditions, achieving exceptionally high efficiency under partial load conditions (IPLV).

Incorporates power-loss protection and self-diagnostic functions to ensure the safe and reliable operation of the unit, even under extreme operating conditions.

Working Principle

The unit utilizes magnetic bearings to support the compressor rotor, ensuring non-contact operation during rotation. In the refrigeration cycle, gaseous refrigerant is compressed by the high-efficiency maglev centrifugal compressor and then enters the condenser, where it liquifies through water cooling. It then passes through an expansion valve into the evaporator, vaporizing as it absorbs heat from the chilled water. Since the system is 100% oil-free, no oil film forms on the heat exchanger surfaces, significantly enhancing heat transfer efficiency.

1.Maglev Water-cooled Centrifugal Chiller

Model Parameters

Model	Unit	LY120	LY200	LY240	LY400
Cooling Capacity	RT	120	200	240	400
Cooling Capacity	kW	422	703	844	1407
Input Power	kW	70	117	141	234
COP	kW/kW	＞6	＞6	＞6	＞6
Starting Current	A	2	2	2	2
Power Supply	380V-3P-50Hz
Refrigerant	R134a
Evaporator Flow Rate	m³/h	73	121	145	242
Condenser Flow Rate	m³/h	85	141	170	283
Unit Weight	kg	3000	4000	4300	6000

Technical Parameters for Maglev Water-Cooled Units (Cooling/Heating)

Model	Unit	LYS120L(L)	LYS200L(L)	LYS120ⅡL(L)	LYS200ⅡL(L)	LYS120ⅣL(L)	LYS200ⅣL(L)
Cooling Conditions	kW	422	703	844	1407	1688	2814
Cooling Conditions	Ton	120	200	240	400	480	800
Rated Power	kW	67	112	134	223	264	440
COP	W/W	6.3	6.3	6.3	6.3	6.4	6.4
Rated Current	A	104	173	208	346	409	682
Heating Conditions	kW	443	735	883	1450	1770	2950
Heating Conditions	Ton	126	209	251	412	503	839
Rated Power	kW	78	129	155	250	311	500
COP	W/W	5.7	5.7	5.7	5.8	5.7	5.9
Rated Current	A	120	200	240	388	481	775
Max Operating Current	A	155	238	310	476	620	952
Power Supply Type		380V/3N~50Hz
Load Control Range		25%–100% Stepless Adjustment
Compressor	Type	Magnetic Bearing, Centrifugal Compression, High-speed PMSM
	Starting Current	<5A
	Quantity	1	1	2	2	4	4
Evaporator	Type	Shell and Tube Heat Exchanger (Flooded / Falling Film Type)
	Water Flow Rate (m³/h)	73	121	146	243	292	485
	Water Resistance (kPa)	52	52	54	54	54	54
Condenser	Type	Shell and Tube Heat Exchanger
	Water Flow Rate (m³/h)	44	73	87	146	175	291
	Water Resistance (kPa)	57	60	58	62	57	62
Refrigerant	Type	R134a	R134a	R134a	R134a	R134a	R134a
	Charge Amount (kg)	210	390	420	780	840	1400
	Expansion Device	Electronic Expansion Valve
Dimensions	Length (mm)	2600	4100	4200	4100	4900	6700
	Width (mm)	1300	1250	1300	2500	2550	2700
	Height (mm)	1950	2250	1950	2250	1950	2550
Weight	Shipping (kg)	2300	4300	4550	7100	9050	11700
Weight	Operating (kg)	2910	5090	5370	8280	10290	13500
Cooling Mode: Based on GB/T 18430.1. Chilled water inlet/outlet: 7/12°C; Cooling water inlet/outlet: 30/35°C. Heating Mode: Based on GB/T 19409. Hot water inlet/outlet: 38.6/45°C; Heat source water inlet/outlet: 15/6.3°C. For any non-standard requirements, please confirm with our professional technical staff.

Unit Operating Specifications

Category	Requirement / Specification
Voltage Fluctuation	±10% (at constant rated frequency)
Voltage Sag	≤15% within 2ms
Harmonics	Complies with GB/T 14594 (Power quality—Harmonics in public supply network)
Phase Imbalance	Voltage phase unbalance ≤ 2%
Frequency	±5% (at constant rated voltage)
Ambient Temperature	0°C to 35°C (Temperature within the installation space)
Relative Humidity	< 80%, non-condensing
Altitude	< 1000m (Higher altitudes may affect electrical insulation and conductivity, requiring special configuration)
Installation Guidelines	Environmental Protection: The unit must be installed in a well-ventilated indoor environment. It is strictly prohibited to store or operate the unit in areas exposed to rain, water droplets, or direct sunlight. Safety Distance: Do not install the unit near facilities where there is a risk of flammable gas leakage. Special Environments: For installations in coastal areas (high salinity), chemical plants, or environments with high concentrations of corrosive gases, a specialized unit design is required. Ventilation Requirement: The machine room must maintain adequate airflow to ensure the indoor ambient temperature does not exceed 35°C.