Inverter Centrifugal Chiller

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Features

High Efficiency with Variable Speed

An inverter-driven compressor adjusts its speed to match cooling demand, reducing unnecessary energy use from frequent start-stop cycles. With a COP of 6.0–7.0 and IPLV values above 10.0, it performs exceptionally well even in the 30%–80% load range, making it ideal for facilities with variable cooling needs.

Flexible Cooling Output

Capacity can be modulated between 10% and 100% through coordinated control of the variable-frequency motor and inlet guide vanes, ensuring accurate temperature control and optimal energy consumption.

Quiet & Durable Design

Magnetic or air bearings eliminate mechanical contact, keeping noise levels under 70 dB and extending service life to over 25 years. Multi-stage compression further improves stability by reducing the pressure ratio at each stage.

Environmentally Responsible

Compatible with low-GWP refrigerants such as R134a and R1233zd, in line with global environmental regulations like the EU F-Gas directive.

Smart Operation

PLC-based control system supports remote monitoring, performance optimization, and fault diagnostics, simplifying maintenance and improving operational reliability.

Typical Applications

Commercial Buildings

Inverter centrifugal chillers provide reliable central cooling for large complexes and office towers, adapting to fluctuations in occupancy while optimizing energy use. Hotels and hospitals benefit from stable temperature and humidity control, with variable-speed operation reducing electrical demand peaks.

Industrial Cooling

In electronics manufacturing, such as semiconductor and display panel plants, these chillers deliver year-round cooling with precise temperature control (±0.5°C). They are also used in chemical and pharmaceutical industries for process cooling and reactor temperature regulation to ensure continuous production.

Data Centers

Designed to handle the high heat loads of dense server environments, inverter centrifugal chillers can be combined with free cooling systems to achieve low Power Usage Effectiveness (PUE), often below 1.3.

District Cooling Systems

Suitable for large-scale centralized cooling in airports, industrial parks, and similar facilities, especially when integrated with ice or chilled-water storage to take advantage of off-peak electricity rates.

Medical and Educational Facilities

Used in operating rooms, laboratories, and other environments requiring strict cleanliness and climate stability, with precise load matching to maintain both air quality and temperature.

Technical Specifications

Model (HTVC-***)			500S	550S	600S	650S	700S	800S	900S	1000S	1100S	1200S	1300S	1400S	1500S
Nominal cooling capacity		kW	1760	1965	2130	2324	2497	2858	3224	3575	3953	4323	4665	4925	5274
Input power		kW	288	320	348	381	406	467	526	586	647	704	761	805	863
Full load coefficient of performance (COP)		kW/kW	6.11	6.14	6.12	6.1	6.15	6.12	6.13	6.1	6.11	6.14	6.13	6.12	6.11
Full load coefficient of performance (COP)		kW/RT	0.58	0.57	0.57	0.58	0.57	0.57	0.57	0.58	0.58	0.57	0.57	0.57	0.58
Refrigerant	Type		R134a
Refrigerant	Charge	kg	450	495	540	585	630	720	810	900	990	1080	1170	1260	1350
Condenser	Type		Shell and tube condenser
	Cooling water volume	m³/h	352	393	426	465	499	572	645	716	791	865	933	986	1056
	Water pressure drop	kPa	66	66	76	76	76	95	95	95	98	98	98	98	98
	Pipe connection	DN	250	250	250	250	250	300	300	300	350	350	350	350	350
Evaporator	Type		Falling film evaporator
	Chilled water volume	m³/h	303	338	366	400	429	492	555	615	680	743	802	847	907
	Water pressure drop	kPa	60	60	72	72	72	90	90	90	95	95	95	95	95
	Pipe connection	DN	250	250	250	250	250	300	300	300	350	350	350	350	350
Dimensions	Length (A)	mm	3920	3920	4120	4120	4120	4570	4570	4570	4780	4780	4780	4780	4780
	Width (B)	mm	2320	2320	2380	2380	2380	2550	2550	2550	2800	2800	2800	2800	2800
	Height (C)	mm	2450	2450	2500	2500	2500	2900	2900	2900	2950	2950	2950	2950	2950
Installation size	D	mm	2944	2944	3144	3144	3144	3384	3384	3384	3384	3384	3384	3384	3384
Installation size	E	mm	1800	1800	1800	1800	1800	2000	2000	2000	2300	2300	2300	2300	2300
Unit weight		kg	9100	9600	10100	10600	11200	11800	12500	13200	14500	15500	16500	18000	19500
Operating weight		kg	10050	10550	11100	11700	12350	13100	14000	14800	16350	17500	18600	20000	21500

Operating Conditions

Evaporator: Inlet water temperature 12°C; outlet water temperature 7°C
Condenser: Inlet water temperature 30°C; outlet water temperature 35°C
For variations in operating conditions, refer to the performance curves.
Connections: Flanged connections for both condenser and evaporator water piping
Applicable Refrigerant: R134a
Voltage Options:
1. Low voltage: 3φ–380V–50Hz, 3φ–460V–50Hz (inverter)
2. High voltage: 3φ–6kV–50Hz, 3φ–10kV–50Hz (fixed speed)
Water-Side Design Pressure: 1.0 MPa
Unit Conversion: 1 RT (US refrigeration ton) = 3.517 kW

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