23-oil return in refrigeration systems Vocational Education Equipment For School Lab Air Conditioner Training Equipment
Brand: ShouldShine
Model: SR2023
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] thermowells for temperature measurement
[8] refrigerant R134a, CFC-free

Technical Data
2 compressors with condenser
- refrigeration capacity: 1194W at -10/32°C
- volumetric air flow rate fan: 1300m³/h
Evaporator
- transfer area: 5,7m²
- volumetric air flow rate fan: 720m³/h
Rising pipes
- d=14,4mm; L=1110mm
- d=10mm; L=1110mm
- d=6mm; L=1110mm
- d=8/10mm (double rising pipe);
L approx. 1300mm
Measuring ranges
- pressure: 1x -1...9bar; 1x -1...24bar
- flow rate: 1x 2...27L/h
- temperature: 5x -50...100°C

Dimensions and Weight
LxWxH: 1410x800x1900mm
Weight: approx. 216kg
Required for Operation
230V, 50/60Hz, 1 phase