Canned Motor Pumps for Research Facilities

Your benefits:

• Broad portfolio: extensive standard portfolio as well as the development and manufacture of customer specific (ETO) pumps

• Products with a long service life: no dynamic seals and non-contact running on hydrodynamic slide bearings ensure almost wear-free operation

• Knowledge and experience: pump specialist for canned motor pumps for over 50 years

Typical areas of application:

• Research on refrigeration systems

• Research with refrigeration systems

Research project – phase change material in industrial CO2 refrigeration systems

Requirements

The research project investigates the extent to which thermal energy can be stored at low load times in phase change materials (PCM) for reuse during peak loads. In the pilot plant, the refrigerant CO2
circulates in a temperature range from 5 °C to –50 °C with a maximum nominal pressure of 52 bar. The pump works at various operating points by using the frequency inverter. Further requirements include absolute leak-tightness and a low MTBF value (mean time between failure) and thus maximum reliability of the pump used.

• Delivery rate: 1.5 m³/h to 10 m³/h
• Pumping head: 40 m
• Operating temperature: 5°C to –50°C
• Refrigerant: CO2
• System type: CO2 refrigeration system

The pump used

For the pilot plant, HERMETIC together with its Norwegian agent Finesterra AS supplied a four-stage canned motor pump of the type CAMh 2/4 with AGX3.0 motor specifically designed for CO2 applications. The generously dimensioned plain bearings made of modern sintered materials enable the pump to run practically without wear. The design and material selection ensure the nominal pressure of 52 bar and the test pressure of 78 bar.

Medium / refrigerant

Carbon dioxide is increasingly used as a refrigerant. Particularly popular are supermarket refrigeration and industrial refrigeration systems. CO2 is used in different forms, subcritical in cascade systems, transcritical in pure CO2 systems or as a secondary fluid. The advantages of carbon dioxide are the particularly good heat transfer coefficient, exceptionally low viscosity and high environmental compatibility.

Everything you need to know about CO2 is available here.

We have the right pumps for your industry