Tianfeng LS-2.33HP Integrated Circulating Chiller
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | Tianfeng-LS-2.33HP |
| Instrument Type | Integrated Unit |
| Cooling Method | Water-Cooled |
| Temperature Control Range | 0–10 °C |
| Cooling Capacity | 7.38 kW |
| Temperature Stability | ±0.1 °C |
| Circulating Pump Pressure | 2.0 bar |
| Circulating Pump Flow Rate | 2 L/min |
| Reservoir Volume | 45 L |
| Operation Mode | Continuous Duty |
Overview
The Tianfeng LS-2.33HP Integrated Circulating Chiller is an engineered thermal management solution designed for precise, stable, and continuous cooling of laboratory and analytical instrumentation. It operates on a vapor-compression refrigeration cycle utilizing R22 refrigerant and features a hermetic scroll compressor—selected for high volumetric efficiency, low mechanical wear, and extended service life under sustained load conditions. The chiller maintains temperature setpoints within ±0.1 °C across its operational range of 0–10 °C, making it suitable for applications demanding tight thermal regulation, including graphite furnace atomic absorption spectrometers (GFAAS), inductively coupled plasma optical emission spectrometers (ICP-OES), X-ray fluorescence (XRF) analyzers, scanning electron microscopes (SEM), and transmission electron microscopes (TEM). Its water-cooled architecture eliminates dependency on ambient air conditions, ensuring consistent performance in controlled lab environments where airflow or acoustic constraints limit air-cooled alternatives.
Key Features
- Hermetic scroll compressor (2.15 kW output) with integrated high/low pressure protection, motor overheat protection, and current overload safeguards
- High-efficiency copper-tube/aluminum-fin condenser with low-noise external rotor fan (2500 m³/h airflow)
- Stainless steel plate-type evaporator with direct immersion coil design and automatic water level compensation system
- Digital PID temperature controller with 0.1 °C resolution, programmable setpoint range (5–35 °C), and real-time display of reservoir temperature
- Industrial-grade circulation pump (0.37 kW) delivering 2 L/min at 14 m head pressure and rated for continuous operation
- 45 L stainless steel reservoir with DN20 inlet/outlet ports, corrosion-resistant internal coating, and easy-access drain valve
- Electrical components conforming to IEC 60204-1 standards; Schneider-brand contactors, relays, and circuit protection devices
- Epoxy-powder-coated steel enclosure with modular panel design for rapid maintenance access and electromagnetic compatibility (EMC) compliance
Sample Compatibility & Compliance
This chiller is compatible with all standard laboratory equipment requiring closed-loop coolant circulation via ½” (DN20) NPT or BSP connections. It meets the thermal interface requirements of ISO/IEC 17025-accredited laboratories when deployed as part of instrument cooling infrastructure. While not certified to UL 61010-1 or CE Machinery Directive out-of-the-box, its component-level compliance—including Schaltbau-certified safety relays and TÜV-recognized compressor insulation classes—supports integration into systems undergoing full regulatory validation. The unit supports GLP/GMP-aligned operation through traceable temperature logging (when paired with optional RS485 or Modbus RTU interface modules) and provides hardware-based fault signaling (dry-contact alarm outputs) for integration into centralized lab monitoring networks.
Software & Data Management
The LS-2.33HP operates autonomously via its embedded digital controller without requiring host software. Optional communication modules enable integration with laboratory information management systems (LIMS) or building automation platforms via Modbus RTU over RS485. Temperature setpoints, real-time reservoir readings, and alarm status can be polled at user-defined intervals. For FDA 21 CFR Part 11 compliance, third-party data acquisition software (e.g., LabVIEW or custom SCADA implementations) may be configured to record timestamps, operator IDs, and audit trails—provided the chiller’s analog voltage output (0–10 VDC) or digital registers are mapped accordingly. No onboard data storage or user authentication is provided; all configuration changes require physical access to the front-panel interface.
Applications
- Cooling of high-power laser sources (CO₂, Nd:YAG, fiber lasers) in materials processing and spectroscopy setups
- Thermal stabilization of plasma torches and RF generators in ICP-MS and ICP-OES systems
- Heat dissipation from X-ray tubes in XRF and XRD diffractometers
- Condenser cooling for rotary evaporators and vacuum pumps in organic synthesis labs
- Temperature control of cryo-stages and detector housings in electron microscopy suites
- Process cooling of semiconductor wafer probing stations and photolithography alignment tools
FAQ
What is the maximum allowable coolant flow resistance the pump can overcome?
The circulation pump is rated for 14 m head at 2 L/min; total system pressure drop—including tubing, fittings, and instrument heat exchangers—must remain below 2.0 bar (≈20 m H₂O) to maintain specified flow.
Can this chiller operate with ethylene glycol/water mixtures?
Yes—up to 30% by volume glycol is permitted; however, cooling capacity decreases approximately 0.8% per 1% glycol added, and viscosity-induced flow reduction must be verified against pump curve data.
Is remote start/stop functionality available?
Standard configuration includes dry-contact terminals for external interlock control; optional relay modules support TTL or 24 VDC trigger inputs.
What maintenance intervals are recommended?
Compressor oil and refrigerant charge require verification every 24 months under continuous operation; condenser fins should be inspected quarterly for dust accumulation; reservoir water quality must be monitored monthly for conductivity (< 50 µS/cm) and pH (6.5–7.5).
