Laboratory Stand “Heat Transfer in Refrigeration”

Model of a Refrigeration System with Closed Water Circuit

• Cooling Load: Used as a cooling load for the closed water circuit
• Hot Water Circuit: Includes a tank, heater, pump, and temperature controller
• Compressor: Hermetic piston compressor

Components:

• Coaxial evaporator and condenser
• Heater: 300W
• Sight glass in the refrigerant circuit
• Instrumentation: bimetallic thermometers and rota meters
• Refrigerant: R134a

Compressor Specifications:

• Power consumption: 150W at -10°C
• Refrigerating capacity: 280W at 0/32°C

Heat Exchanger:

• Coaxial tube heat exchanger
• Capacity: 2kW at 45°C condensing temperature, ΔT=7K

Circulating Pump:

• 3 stages: 30-45-60W
• Max. flow rate: 2.9m³/h
• Max. head: 4m

Water Tank:

• Insulated
• Capacity: 4.5 liters

Measuring Ranges:

• Temperature: 4x 0…60°C
• Flow rate: 2x 0…33 liters/hour

Dimensions and Weight:

• Size (L×W×H): 900×400×650 mm
• Weight: approx. 35 kg