Tianfeng TF-LS-1KW Integrated Circulating Chiller

Overview

The Tianfeng TF-LS-1KW Integrated Circulating Chiller is a precision-engineered refrigeration system designed for stable, continuous thermal management of heat-generating laboratory and industrial equipment. Based on vapor-compression refrigeration cycle principles, it employs a high-efficiency scroll compressor, optimized refrigerant circuitry, and PID-controlled water temperature regulation to deliver consistent cooling performance across demanding operational environments. Unlike air-cooled units, this water-cooled chiller maintains thermal stability independent of ambient air conditions—critical for applications requiring tight temperature tolerance (±0.1 °C) and uninterrupted operation over extended periods. Its compact footprint (650 × 500 × 765 mm), integrated reservoir (15 L), and stainless-steel fluid path ensure compatibility with sensitive analytical instrumentation while meeting rigorous hygiene and corrosion-resistance requirements common in GLP and GMP-regulated laboratories.

Key Features

• Stable temperature control within ±0.1 °C across 0–40 °C operating range, validated under load via internal PT100 sensor feedback loop
• Integrated 15-liter stainless steel reservoir with corrosion-resistant wetted parts compliant with ISO 8502-3 surface cleanliness standards
• High-flow circulating pump delivering up to 38 L/min at 2.0 bar pressure—sufficient for multi-instrument daisy-chaining or high-thermal-load devices such as ICP-MS torches or electron microscope cold traps
• Dual-mode operation: fixed-setpoint constant-temperature mode and adaptive intelligent mode that dynamically adjusts coolant output based on real-time thermal load variation
• Comprehensive safety architecture including compressor overheat cutoff, high/low refrigerant pressure interlocks, overcurrent protection, and overtemperature alarm with relay output for external system shutdown integration
• Digital LED interface with intuitive parameter navigation; optional upgrade to RKC (Japan) programmable controller supporting ramp-soak profiles and RS-485 Modbus RTU communication
• CE-marked electrical components (Siemens, Schneider, Omron) and certified refrigeration-grade valves (Danfoss, Sporlan) ensuring long-term reliability and serviceability

Sample Compatibility & Compliance

This chiller is routinely deployed to thermally stabilize high-value analytical platforms where uncontrolled heating degrades measurement fidelity—including graphite furnace atomic absorption spectrometers (GFAAS), inductively coupled plasma optical emission spectrometers (ICP-OES), X-ray fluorescence (XRF) and X-ray diffraction (XRD) systems, scanning and transmission electron microscopes (SEM/TEM), and laser-based instruments (e.g., laser ablation ICP-MS). Its closed-loop design prevents contamination of instrument coolant circuits and eliminates evaporative loss—essential for maintaining ASTM E1657-18 calibration integrity during prolonged runs. The unit complies with IEC 61000-6-3 (EMC emissions), IEC 61000-6-2 (immunity), and meets mechanical safety requirements per ISO 12100. While not FDA 21 CFR Part 11–certified out-of-the-box, its optional RKC controller supports audit-trail logging and user-access-level configuration—facilitating validation under GLP and pharmaceutical QC workflows.

Software & Data Management

The standard digital controller provides local setpoint adjustment, real-time temperature display, flow status indication, and fault code readout (e.g., “E03” = low flow, “E07” = high discharge temperature). For networked lab infrastructure, the optional RKC controller enables remote monitoring and control via RS-485 Modbus RTU, allowing integration into LabVantage, STARLIMS, or custom SCADA environments. All temperature setpoints, alarm thresholds, and operational logs are stored non-volatile memory with timestamping. When configured for regulated environments, the RKC unit supports electronic signatures, role-based access control (admin/operator), and exportable CSV reports—aligning with ALCOA+ data integrity principles for FDA and EMA submissions.

Applications

• Laboratory Instrument Cooling: Thermal stabilization of plasma sources (ICP), X-ray tubes, detector cryo-coolers, and laser diodes to minimize spectral drift and signal noise
• Materials Characterization: Maintaining precise sample stage temperatures during XRD, SEM, and DSC experiments where thermal expansion artifacts must be suppressed
• Pharmaceutical Process Support: Controlling jacketed reactor temperatures during lyophilization cycle development and fermentation monitoring per USP & Ph. Eur. guidelines
• Electronics Testing: Regulating thermal loads on high-power RF amplifiers, semiconductor probe stations, and wafer-level test equipment
• Plastics & Manufacturing QA: Mold temperature control for injection-molding validation studies referenced in ISO 294-4 and ASTM D3641

FAQ

What is the maximum allowable return water temperature for continuous operation?
The unit is rated for inlet water temperatures up to 40 °C. Sustained return temperatures above this threshold increase condensing pressure, accelerating compressor wear and reducing refrigerant cycle efficiency. For optimal longevity, maintain return temperature ≤35 °C.

Can this chiller support multiple instruments simultaneously?
Yes—provided total thermal load remains within 300–9000 W and combined flow demand does not exceed 38 L/min at ≥1.5 bar minimum pressure. Parallel distribution manifolds with individual flow meters and balancing valves are recommended for multi-port configurations.

Is the stainless steel reservoir electropolished for pharmaceutical use?
Standard configuration features passivated 304 stainless steel. Electropolished 316L reservoirs and sanitary tri-clamp fittings are available as factory-installed options upon request—compliant with ASME BPE-2022 surface finish specifications.

Does the chiller meet ISO 9001:2015 quality system requirements?
Tianfeng holds ISO 9001:2015 certification for design, manufacturing, and service processes. Each TF-LS-1KW unit undergoes factory performance verification (refrigeration capacity, temperature stability, pressure decay, and electrical safety tests) with traceable calibration records provided upon shipment.