Recirculating Chiller
Laboratory recirculating chiller with 4L stainless steel tank providing ±0.1°C temperature control accuracy and 8-16 L/min circulation flow for research applications requiring precise thermal management.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Recirculating Chiller is a laboratory-grade cooling system designed for precise temperature control in research applications requiring consistent thermal management. This recirculating chiller features a 4L stainless steel tank with temperature control accuracy of ±0.1°C, making it suitable for applications demanding stable thermal conditions. The system utilizes R134A refrigerant and provides continuous circulation with flow rates of 8-16 L/min and pump lift capabilities of 1.5-2.7m.
The unit incorporates an LED display with 0.1°C resolution for precise temperature monitoring and is compatible with reaction kettles ranging from 1-5L capacity. The 304 stainless steel tank construction ensures chemical resistance and thermal stability, while the compact design (220×155×120mm tank dimensions) allows for efficient laboratory space utilization. This chiller is commonly employed in synthetic chemistry, materials processing, and analytical workflows where controlled cooling is essential for experimental reproducibility.
How It Works
The recirculating chiller operates through a closed-loop refrigeration cycle using R134A refrigerant to extract heat from the circulating fluid. The system employs a compressor to pressurize the refrigerant, which then passes through a condenser where heat is rejected to the ambient environment. The cooled refrigerant expands through an expansion valve and enters the evaporator coil within the stainless steel tank, where it absorbs heat from the circulating fluid.
Temperature control is achieved through a feedback control system that monitors the tank temperature via sensors and modulates the refrigeration cycle to maintain the setpoint within ±0.1°C. The integrated circulation pump continuously moves the cooled fluid through external connections to the target application and back to the tank, ensuring uniform temperature distribution. The LED display provides real-time temperature monitoring with 0.1°C resolution, allowing operators to verify thermal stability throughout the experiment.
Features & Benefits
Model
- BK-RC610
- CCA-420
Weight
- 12.74 kg
Dimensions
- L: 8.66 mm
- W: 6.1 mm
- H: 4.72 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Temperature Control Accuracy | ±0.1°C precision control | Entry-level models often provide ±0.5 to ±1.0°C accuracy | Tighter temperature control reduces experimental variability and improves reproducibility in temperature-sensitive assays |
| Tank Material | 304 stainless steel construction | Many units use plastic or coated metal tanks | Stainless steel provides superior chemical resistance and thermal stability for diverse laboratory applications |
| Display Resolution | 0.1°C LED display resolution | Basic models often show 1°C increments | Higher resolution enables precise monitoring and verification of thermal conditions during critical experiments |
| Flow Rate Range | Variable 8-16 L/min circulation | Fixed flow rates are common in lower-cost models | Adjustable flow allows optimization for different heat loads and circulation requirements |
| Pump Lift Capacity | 1.5-2.7m vertical lift capability | Basic units may have limited or no vertical pumping ability | Accommodates flexible installation configurations and vertical circulation requirements in laboratory setups |
| Tank Volume | 4L stainless steel capacity | Smaller units often have 1-2L capacity | Larger thermal mass provides better temperature stability and supports higher heat load applications |
This chiller combines precise ±0.1°C temperature control with robust stainless steel construction and flexible circulation capabilities. The 4L tank capacity and variable flow pump provide superior thermal management compared to basic laboratory chillers, while the compact design maintains efficient space utilization.
Practical Tips
Verify temperature accuracy using a NIST-traceable reference thermometer at your typical operating temperature before critical experiments.
Why: Ensures measurement accuracy and traceability for regulatory compliance and data quality.
Clean the stainless steel tank monthly with appropriate solvents and inspect circulation lines for blockages or leaks.
Why: Prevents contamination and maintains heat transfer efficiency for optimal performance.
Allow 15-20 minutes for thermal equilibration after setpoint changes before beginning temperature-sensitive experiments.
Why: Ensures the entire circulation system reaches stable temperature conditions for reproducible results.
If temperature stability decreases, check for air bubbles in the circulation system and prime the pump if necessary.
Why: Air in the system reduces heat transfer efficiency and can cause temperature fluctuations.
Record both setpoint and actual temperatures during experiments, monitoring for drift over time.
Why: Documents thermal conditions for data integrity and helps identify potential equipment issues early.
Ensure adequate ventilation around the condenser unit and check refrigerant connections for leaks during routine maintenance.
Why: Prevents overheating of the refrigeration system and ensures safe operation of the R134A refrigerant.
Use insulated tubing for external circulation lines to minimize heat gain and maintain temperature stability.
Why: Reduces thermal losses and improves overall system efficiency, especially for longer circulation paths.
Check and clean the condenser coils quarterly to maintain cooling efficiency, especially in dusty laboratory environments.
Why: Dirty coils reduce heat rejection capacity and can lead to poor temperature control or compressor overheating.
Setup Guide
What’s in the Box
- Recirculating chiller main unit
- Power cord
- Inlet and outlet connection fittings (typical)
- User manual and operating instructions
- Warranty documentation (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering parts and labor, with technical support available for installation guidance and troubleshooting assistance.
Compliance
What is the temperature range and stability of this chiller?
The unit provides ±0.1°C temperature control accuracy with LED display resolution of 0.1°C. Consult product datasheet for specific temperature range limits and stability specifications over time.
What type of heat transfer fluid should be used?
The 304 stainless steel tank is compatible with most laboratory coolants including ethylene glycol solutions. Fluid selection depends on your target temperature range and chemical compatibility requirements.
How do I determine if the pump capacity is sufficient for my application?
The circulation pump provides 8-16 L/min flow rate with 1.5-2.7m lift capability. Calculate your system's pressure drop and flow requirements to ensure compatibility with these specifications.
What maintenance is required for optimal performance?
Regular maintenance includes cleaning the stainless steel tank, checking refrigerant levels, and verifying temperature calibration. Circulation pump filters should be inspected and replaced as needed.
Can this unit handle continuous operation?
The R134A refrigerant system and robust circulation pump are designed for continuous laboratory use. Ensure adequate ventilation and periodic maintenance for reliable long-term operation.
What vessel sizes are compatible with this chiller?
The unit is designed for reaction kettles ranging from 1-5L capacity, with the 4L tank volume providing adequate thermal mass for effective temperature control.
How accurate is the temperature display compared to actual fluid temperature?
The LED display shows 0.1°C resolution with ±0.1°C control accuracy. For critical applications, verify display accuracy against a calibrated reference thermometer at your operating temperature.
What are the power requirements and operating environment specifications?
Consult product datasheet for electrical specifications, ambient temperature limits, and ventilation requirements to ensure proper installation and operation.
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