SR2020 Heat Exchangers In The Refrigeration Circuit Vocational Training Equipment Refrigeration Lab Equipment

Learning Objectives / Experiments

– Different heat exchangers and their use in refrigeration

* coaxial coil heat exchanger

* finned tube heat exchanger

* tubular heat exchanger

* plate heat exchanger

– Find out the correct installation position

– Determine energy flows

– Effect of superheating and supercooling of the refrigerant on the cyclic process

– Design of a compression refrigeration system

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

Specification

[1] Refrigeration system with 4 different heat exchangers: coaxial coil heat exchanger, finned tube heat exchanger, tubular heat exchanger, plate heat exchanger

[2] Combinations of different media: water/refrigerant, refrigerant/refrigerant, air/refrigerant

[3] Water circuit with tank and pump to cool the condenser and heat the evaporator

[4] Superheater can be disabled via bypass

[5] Flow meter and thermometer in the water circuit to determine the exchanged heat flows

[6] Thermometers at all relevant points of the system

[7] Refrigerant R134a, CFC-free

Technical Data

Compressor

– refrigeration capacity: 580W at -5/32°C

– power consumption: 235W at -10/32°C

Receiver: 1.4L

Measuring ranges

– pressure: -1…9bar / -1…24bar

– temperature: 3x -20…30°C, 9x 0…60°C,

1x 0…100°C

– flow rate: 2x 240L/h

Dimensions and Weight

l x w x h: 1800x750x1900mm

Weight: approx. 200kg

Connections

230V, 50Hz, 1 phase