Tianfeng LS-15KW Integrated Circulating Chiller
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | Tianfeng-LS-15KW |
| Instrument Type | Integrated Unit |
| Cooling Method | Water-Cooled |
| Temperature Control Range | 0–40 °C |
| Refrigeration Capacity | 300–9000 W |
| Temperature Stability | ±0.1 °C |
| Circulation Pump Pressure | 2.0 bar |
| Circulation Flow Rate | 38 L/min |
| Reservoir Volume | 5–550 L |
| Operating Mode | Continuous Duty |
| Rated Refrigeration Output | 15 kW |
| Power Input | 6.2 kW |
| Reservoir Capacity (Standard) | 110 L |
| Dimensions (L×W×H) | 1350 × 750 × 1445 mm |
| Power Supply | 220 V, 50 Hz |
| Safety Protections | Compressor Overheat Protection, Overcurrent Protection, High/Low Pressure Switches, Overtemperature Cut-off |
Overview
The Tianfeng LS-15KW Integrated Circulating Chiller is an engineered thermal management solution designed for precision temperature control in demanding laboratory and industrial applications. It operates on a vapor-compression refrigeration cycle, utilizing a high-efficiency scroll compressor, thermostatic expansion valve, and copper-aluminum finned condenser to deliver stable cooling performance across a wide operating range. The unit maintains continuous circulation of deionized or treated water through external equipment—such as analytical instruments, laser systems, vacuum chambers, or semiconductor fabrication tools—ensuring consistent thermal load dissipation and operational stability. Its closed-loop architecture prevents evaporation loss and minimizes contamination risk, while the integrated design eliminates the need for remote condenser placement or auxiliary plumbing. Engineered for 24/7 duty cycles, it supports uninterrupted operation under variable ambient conditions (up to 35 °C ambient inlet air temperature), with refrigeration capacity calibrated at standard conditions: 12 °C inlet / 7 °C outlet chilled water, 30 °C ambient inlet / 40 °C outlet condenser air.
Key Features
- High-precision digital PID temperature controller with ±0.1 °C stability over 0–40 °C setpoint range
- Stainless steel reservoir (110 L standard) and corrosion-resistant centrifugal pump rated for 38 L/min at 2.0 bar maximum head pressure
- Dual-mode operation: fixed-temperature hold and adaptive intelligent temperature modulation based on real-time thermal feedback
- Comprehensive safety system including compressor overheat protection, high/low refrigerant pressure cutoffs, overcurrent detection, and overtemperature alarm
- Industrial-grade electrical components from Siemens, Schneider Electric, and Omron for long-term reliability and EMC compliance
- Low-noise scroll compressor (European-sourced) coupled with optimized acoustic insulation for laboratory environments
- Modular internal layout enabling field serviceability and optional upgrades—including RKC temperature controller integration and RS-485 Modbus communication interface
- Full stainless steel wetted parts and EPDM/NBR sealing materials compatible with common coolant additives and inhibited glycol solutions
Sample Compatibility & Compliance
The LS-15KW chiller is compatible with a broad spectrum of laboratory instrumentation requiring active thermal regulation—including graphite furnace atomic absorption spectrometers (GFAAS), inductively coupled plasma optical emission spectrometers (ICP-OES), ICP-mass spectrometers (ICP-MS), X-ray fluorescence (XRF) analyzers, X-ray diffractometers (XRD), scanning electron microscopes (SEM), and transmission electron microscopes (TEM). Its flow and pressure characteristics meet OEM requirements for most major instrument manufacturers’ cooling interfaces. From a regulatory standpoint, the unit complies with ISO 9001:2015 quality management standards and incorporates design elements aligned with GLP and GMP environmental control expectations—particularly regarding temperature traceability, alarm logging, and failure mode resilience. While not inherently FDA 21 CFR Part 11 compliant, its optional analog/digital signal outputs support integration into validated data acquisition systems with appropriate audit trail configuration.
Software & Data Management
The chiller features a local human-machine interface (HMI) with LED display showing real-time water temperature, flow status, compressor run time, and fault codes. For networked deployment, an optional RS-485 interface enables integration with LabVIEW, SCADA platforms, or building management systems (BMS) via Modbus RTU protocol. Logged parameters—including setpoint history, actual temperature deviation, pump runtime, and alarm events—can be exported for trending analysis. Though no proprietary cloud platform is provided, the device supports third-party data historians when paired with compatible gateways. All firmware updates are performed locally via USB port, ensuring data sovereignty and avoiding internet-dependent maintenance cycles.
Applications
- Laboratory Analytics: Stabilizing detector temperatures in XRD and XRF systems; maintaining constant plasma torch coolant temperature in ICP instruments; regulating graphite furnace cooling rates in AAS
- Materials Characterization: Thermal conditioning of SEM/TEM sample stages and column cooling; supporting cryo-TEM prep workflows when used with external heat exchangers
- Laser Systems: Precision cooling of CO₂, fiber, and diode-pumped solid-state lasers in research and manufacturing settings
- Industrial Process Support: Mold temperature control in polymer testing rigs; hydraulic oil cooling for tribology test benches; vacuum chamber thermal stabilization during thin-film deposition
- Pharmaceutical R&D: Controlled cooling during lyophilization process development; temperature management in fermentation monitoring systems
FAQ
What is the recommended maximum return water temperature?
For optimal compressor longevity and system efficiency, the return water temperature should not exceed 40 °C. Sustained inlet temperatures above this threshold increase discharge pressure and reduce volumetric efficiency, accelerating wear on the scroll compressor.
Can the chiller operate with ethylene glycol mixtures?
Yes—the stainless steel reservoir, pump housing, and tubing are compatible with aqueous solutions containing up to 30% volume/volume inhibited ethylene glycol. Viscosity effects must be accounted for when calculating flow resistance in downstream circuits.
Is remote monitoring supported out of the box?
Standard units include analog voltage outputs (0–10 V) for temperature and status signals. Full remote telemetry requires the optional RS-485 module and external gateway configuration.
How does the unit handle fluctuating thermal loads?
The PID controller dynamically adjusts compressor speed (via inverter drive on select configurations) and modulates expansion valve opening to maintain setpoint accuracy within ±0.1 °C despite load variations between 10–100% of nominal capacity.
What certifications apply to this model?
The LS-15KW carries CE marking per EN 61000-6-2 (EMC immunity) and EN 61000-6-4 (EMC emissions), conforms to RoHS Directive 2011/65/EU, and is manufactured under ISO 9001:2015 certified processes. Electrical safety complies with IEC 61010-1 for laboratory equipment.
