It enables in conjunction with it and the accessory set the design and performance of various basic experiments related to refrigeration. Commercial components are used in practical experiments. These components are mounted on plates ready to be connected and are arranged clearly in the frame. The set includes simple refrigeration components, such as expansion elements and filters, as well as electrical components, e.g. switches and thermostat. The superheater included in the set is a heat exchanger ensuring the complete evaporation of the refrigerant before entering the compressor whilst the liquid refrigerant is supercooled upstream of the expansion element. The control behaviour of the expansion element is monitored at the flow meter. Manometers provide an insight to the pressure ratios in the refrigeration circuit. Via pressure and temperature measurements the change of state of the refrigerant can be tracked and entered into the log p-h diagram. The temperature is measured by interlaboratory thermometers.
Learning Objectives And Experiments
- Design of different simple refrigeration circuits
- Design, operation and adjustment of components
- Sight glass with filter/drier
- Flow meter
- Delivery and intake manometer
- Assembly aid
- Superheater
- Pressure-controlled expansion valve
- Thermostatic expansion valve
- 3-pin circuit breaker
- Electric two-point thermostat with switch hysteresis
- Suction line receiver
- Read and understand technical drawings and operating instructions
- Fault finding
Specification
- Components for the setup of simple refrigeration circuits in conjunction
- Heat exchanger as superheater
- 3-pin circuit breaker
- Assembly aid: 4-port directional valve with sight glass
- Sight glass with humidity indicator
- Pressure-controlled expansion valve
- Thermostatic expansion valve
- 2 thermostats with different temperature ranges
- Components mounted on plates ready to connect
- Abrasion-proof symbols and labels on plates
Technical Specification
- Pressure-Controlled Expansion Valve
- Pressure Range: 1…7bar
- Thermostatic Expansion Valve
- Evaporation Temperature: -45°…20°C
- Circuit Breaker, 3-Pin: 3kw
- 2 Electric Thermostats
- -5…25°C
- -25…5°C
- Heat Exchanger
- Capacity: approx. 2.5kW at -10°C evaporation temperature
- Suction line receiver: 0,3L, max. 28bar
- Measuring ranges
- Pressure: -1…9bar, -1…24bar
- Flow rate: 3…41kg/h
- Plate height: 297mm
