Magnetic Pump Recommendation for Refrigerant R134a
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1. Understanding the Requirements
Medium: Refrigerant R134a (1,1,1,2-Tetrafluoroethane) is a widely used HFC refrigerant known for its low toxicity and ozone-depletion
potential (ODP = 0). It is commonly used in air conditioning, refrigeration, and heat pump systems.
Flow Rate: 0.1–0.6 L/min – This is a relatively low flow rate, typical for precision metering applications.
Temperature: 25°C – At this temperature, R134a is in a gaseous state under standard pressure but may be in a liquid state under the operating
pressure (since the pump must withstand 3 MPa).
Viscosity: 195 μPa·s (0.195 cP) – This is a very low viscosity, similar to water (1 cP at 20°C), which means the pump must be designed for
low-viscosity fluids.
Pressure Requirements:
Pump Body Pressure Rating: 3 MPa (30 bar) – This is a high-pressure requirement, indicating the pump must be robust enough to handle
elevated pressures.
Outlet Back Pressure: 5 bar – The pump must be capable of overcoming this back pressure while maintaining the desired flow rate.
Size Constraint: The pump must be as small as possible, likely for integration into a compact system.
Motor Quality: A good motor is required, likely for precision control, energy efficiency, and reliability.
2. Why a Magnetic Pump?
Leak-Free Operation: Magnetic drive pumps
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