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COMPACT CHILLER
Compact Industrial Water Chiller
Closed-loop chilled water for process cooling, laser systems, and analytical equipment · 3kW-15kW · 220V/380V
8 kW Cooling at 25°C water
5–35°C Setpoint range
±0.5°C Temperature stability
This compact industrial water chiller provides closed-loop chilled water for equipment that cannot be cooled by air alone. Typical applications include laser cutting and marking systems, analytical and laboratory instruments, injection moulding machines, vacuum pumps, and induction heating equipment. The unit is self-contained with an integrated pump, tank, and refrigeration circuit, requiring only water and power connections at the installation point.
The 8kW configuration suits single-machine cooling where a central chilled water system is not available or not justified. The unit is built on a compact frame with a small footprint, allowing installation alongside the equipment it serves rather than in a separate plant room.
Commercial and Technical Advantages
Closed-loop water circuit Chilled water circulates in a sealed loop between the chiller and the equipment, with no contact with ambient air. Closed-loop operation prevents contamination and evaporation losses, and reduces the frequency of water treatment compared with open systems.
Integrated pump and tank Circulation pump and buffer tank are built into the unit, so only supply and return lines and a power feed are required at the installation point. Reduces external pipework, fittings, and commissioning steps on site.
Tight temperature stability Holds chilled water temperature within ±0.5°C of setpoint using a hot-gas bypass valve in addition to compressor modulation. Specified where laser output, measurement accuracy, or process repeatability depends on stable coolant temperature.
Serviceable water circuit Y-strainer on the pump inlet, accessible tank fill and drain points, and a water level sight glass. Filters and strainers are serviceable without breaking the refrigeration circuit, simplifying scheduled maintenance.
Protection and alarm suite Alarms for low water level, low flow, high and low refrigerant pressure, compressor overload, and over-temperature. Dry-contact alarm relay for connection to the equipment's interlock or to a plant annunciator panel.
Control and monitoring Digital controller with setpoint display and Modbus RTU communication. Registers expose water temperature, flow status, alarm codes, and runtime hours. Optional remote start and stop via dry contact input.
Technical Parameters
Cooling performance
Cooling capacity at 25°C water8.0 kW
Capacity at 15°C water6.6 kW
Capacity at 10°C water5.8 kW
Setpoint range5°C to 35°C
Temperature stability±0.5°C
RefrigerantR410A, 1.6 kg
Water circuit
Pump typeCentrifugal, stainless impeller
Flow rate35 L/min at 0.3 MPa
Tank capacity40 L
ConnectionsG1/2 internal thread
FiltrationY-strainer, 60 mesh
Water treatmentRecommended above 200 ppm hardness
Electrical and physical
Power supply220V AC, 1-phase, 50/60Hz
Rated current18.5 A
Sound pressure at 1 m64 dB(A)
Dimensions (H×W×D)780 × 560 × 620 mm
Net weight92 kg
Operating ambient5°C to +43°C
Operating Description
1 Return and sense Warm water returns from the equipment to the tank. A temperature sensor at the tank outlet measures water temperature and feeds the controller.
2 Compressor modulation The controller commands the compressor based on the temperature error. Hot-gas bypass valve trims capacity at low load to hold stability without stopping the compressor.
3 Heat rejection Heat absorbed at the evaporator is rejected at the condenser, which uses a fan to discharge to ambient air. The condenser coil is accessible for cleaning from the front panel.
4 Recirculation Chilled water is drawn from the tank through the Y-strainer and returned to the equipment by the circulation pump. A flow switch confirms circulation before the compressor is permitted to run.
Deployment Contexts
01 Laser processing equipment Cooling of laser sources, optics, and cutting heads where coolant temperature affects beam stability and lens life. Closed-loop water keeps the optical path free of contamination.
02 Analytical and laboratory instruments Cooling of NMR spectrometers, electron microscopes, and mass spectrometers where stable coolant temperature is required for measurement stability and where tap water cooling is not permitted.
03 Plastics and moulding equipment Mould temperature control on injection moulding machines, where chilled water shortens cycle time and improves dimensional consistency of the moulded part.
04 Vacuum and induction equipment Cooling of vacuum pumps, induction coils, and power supplies in industrial installations where equipment must be cooled independently of the building's chilled water system.
Selection and Installation Notes
Capacity at operating temperature Capacity falls as chilled water setpoint decreases. The 8.0 kW rating applies at 25°C water temperature; at 10°C water temperature, capacity is approximately 5.8 kW. Select on the capacity at the actual operating temperature, not on the nominal rating.
Water quality Use demineralised or softened water where local hardness exceeds 200 ppm. Glycol addition is required where ambient temperature around the water lines may fall below freezing; specify glycol concentration at order stage as pump and capacity performance change.
Airflow and heat rejection The condenser rejects the full cooling load plus compressor power to the surrounding air. Ensure the installation location can dissipate this heat or provide ventilation. Maintain 400mm at the condenser inlet and 600mm at the discharge.
Piping and pump head The integrated pump provides 0.3 MPa at 35 L/min. Where the equipment is located more than 10 m from the chiller or requires higher head, specify the high-head pump option or confirm the available head against the system pressure drop.
Power and protection Dedicated 1-pole plus neutral breaker, 25 A C-curve. Copper conductors 4 mm². Grounding resistance ≤ 4 Ω. Where the unit shares a supply with sensitive equipment, note that compressor inrush is approximately 5× nominal.
Maintenance interval Y-strainer cleaning quarterly. Condenser coil cleaning quarterly in dusty environments. Water quality check and tank top-up annually. Refrigerant charge and pressure switch verification annually. Pump seal inspection every 2 years.
Procurement FAQ
Use the equipment manufacturer's stated heat load or coolant flow and temperature rise. Select capacity at the actual operating water temperature, not the nominal rating, and apply a 20% margin. Where the heat load is not documented, provide coolant flow rate and inlet-outlet temperature difference for calculation.
Glycol is required where water lines or the chiller itself may be exposed to ambient temperatures below freezing, such as unheated plant rooms or outdoor installations. Glycol reduces heat transfer performance and increases pump load, so concentration should be specified at order stage rather than added later.
A flow switch monitors circulation and stops the compressor if flow is lost, preventing evaporator freeze-up. An alarm is raised and the dry-contact relay changes state. The pump continues to run in an attempt to restore flow. The unit restarts automatically when flow is re-established, subject to the configured restart delay.
The standard configuration is for indoor installation or sheltered outdoor locations. The enclosure is not rated for direct rain exposure. For outdoor installation, specify the weatherproof enclosure option and confirm that the water circuit is protected with glycol where freezing is possible.
Dimensional drawing, wiring diagram, capacity curve against water temperature, pump curve, refrigerant data sheet, Modbus register map, installation and commissioning checklist, declaration of conformity under LVD and EMC directives, and pressure test record for the refrigeration circuit.
Standard warranty is 24 months from commissioning or 30 months from shipment. Compressor coverage extends to 60 months. Pump seals, strainer elements, and filters are consumable items. Service parts including compressors, pumps, controllers, and hot-gas bypass valves are held for a minimum of 10 years.
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CUSTOM ISO 9001 · CE Certified
Shanghai Soouney Refrigeration Equipment Co., Ltd.
A large-to-medium-sized high-tech enterprise integrating R&D, production and sales. Upholding "integrity, quality, service and innovation" — delivering reliable cooling solutions to the world.
11+
Export Countries
200+
Projects Delivered
19+
Years of Innovation
100%
Client Satisfaction
2007
Engineering Excellence in Refrigeration
Shanghai Soouney was founded with a vision to become a leading force in the refrigeration industry. We are China Compact Industrial Water Chiller Manufacturers and Custom Compact Industrial Water Chiller Suppliers. Today, we are a renowned brand in cabinet air conditioners and industrial chillers, recognised by professionals worldwide.
Rooted in the Chinese market, we provide reliable refrigeration solutions to clients across the globe — from standard products to professional customisation.
From standard products to professional customization — we deliver precision cooling.
R&D Driven
High starting points, stringent standards — continuous innovation
Integrity & Trust
Long-term partnerships built on transparency and after-sales support
Certified Quality
ISO 9001, CE, and industry-specific approvals across all lines
Global Mindset
Serving 40+ countries with tailored refrigeration solutions
"We don't just cool equipment — we build trust, one project at a time."
Why Soouney
Driven by Quality & Innovation
Committed to delivering excellence through continuous improvement and customer-centric solutions.
R&D Focus
High starting points, stringent standards — continuous product improvement
Integrity & Service
Long-term partnerships built on trust, transparency and after-sales support
Global Presence
Rooted in China, serving worldwide with reliable refrigeration solutions
Certified Quality
ISO 9001, CE, and industry-specific approvals for all product lines
