ET 460 Oil Return In Refrigeration Systems Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment
Transport of lubricants soluble in refrigerant in refrigeration systems; transparent pipes Features - transport of lubricants soluble in refrigerant in refrigeration systems - transparent material for monitoring the transport states in the rising pipes - monitoring of the processes in a double rising pipe during partial and full load operation - separate or parallel operation of two compressors for partial and full load Learning objectives/experiments - fundamentals of the oil return in refrigeration systems - effect of the rising pipe diameter on the oil transport - effect of partial and full load operation on the oil transport - principle of operation of a double rising pipe - separate or parallel operation of the compressors Specification [1] investigation of the oil return to the compressor in refrigeration circuits with oil soluble in refrigerant [2] refrigeration circuit with 2 compressors connected in parallel, condenser with 2 fans, evaporator with fan and thermostatic expansion valve [3] 3 single and 1 double rising pipes from glass in the suction pipe of the refrigeration circuit [4] rising pipes selectable via valves [5] flow rate in the refrigeration circuit adjustable by single or combined operation of the two compressors [6] fan speed adjustable [7] temperature measurement with thermowells [8] refrigerant R513A, GWP: 631 Technical data 2 compressors with condenser - refrigeration capacity: 1920W at 5/55°C - power consumption: 1190W bei 5/55°C - volumetric air flow rate fan: 1300m3/h Evaporator - transfer area: 5,7m2 - volumetric air flow rate fan: 720m3/h Rising pipes - Ø 14,4mm; L=1110mm - Ø 10mm; L=1110mm - Ø 6mm; L=1110mm - Ø 8/10mm (double rising pipe); L approx. 1300mm Refrigerant - R513A - GWP: 631 - filling volume: 1,5kg - CO2-equivalent: 0,9t Measuring ranges - pressure: -1...9bar; -1...24bar; 0...0,6bar - flow rate: 2...27L/h - temperature: 5x -50...100°C 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1410x800x1900mm Weight: approx. 216kg
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