Introduction to Refrigeration Teaching Equipment Refrigerator Training Equipment

SR2040 Introduction to Refrigeration Teaching Equipment Refrigerator Training Equipment

Learning Objectives / Experiments

Fundamentals of a simple refrigeration circuit

– Detect and understand the cyclic process

– Changes of state of the refrigerant

– Represent the refrigeration circuit in the process schematic

– Representation of the cyclic process in the log p-h diagram

– Estimate key figures, refrigeration capacity and heat flows

Different operating modes

– Cool air

– Generate cold water

– Heat pump (generate hot water)

Practical exercises

– Drain and fill refrigeration system

– Fault finding

Specification

[1] Set-up of simple refrigeration circuits with different components

[2] 8 self-contained operational modules mounted on a plate each

[3] Light-weight aluminium frame to arrange 6 modules

[4] Evaporator and condenser each available as air/refrigerant heat exchanger (finned tube heat exchanger) and as water/refrigerant heat exchanger (with pipe coil)

[5] Modules fitted with manual valves

[6] Components connected via hoses

[7] CFC-free refrigerant R134a

Technical Data

Hermetic refrigerant compressor

– power consumption: 67W at -10/32°C

– refrigeration capacity: 151W at 5/32°C

Tank content

– water tank, evaporator: 2L

– water tank, condenser: 3L

Pressure switch activation pressure

– LP: 1bar

– HP: 14bar

Manometer

– intake pressure: 1…10bar

– delivery pressure: 1…30bar

Rotameter: 0.4…7.4L/h

Dimensions and Weight

l x w x h: 1300x700x900mm

l x w: 370x340mm (component plates)

Weight: approx. 30kg

Connections

230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase