Refrigeration Components For Advanced Experiments
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Product Description
REFRIGERATION COMPONENTS FOR ADVANCED EXPERIMENTS
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 complex refrigeration components, such as capacity controller, start-up controller, defrost timer, 4/2-way reversing valve and refrigeration controller. The 4/2-way reversing valve, for example, is used to reverse the circuit. This allows for the defrosting of an iced-up evaporator by operating it temporarily as condenser. Manometers provide an insight to the pressure ratios in the refrigeration circuit.
Via pressure and temperature measurements the changes of state of the refrigerant can be tracked and entered into the log p-h diagram. The temperature is measured by inter laboratory thermometers.
The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.
The unit shall perform the following experiments and investigations:
Learning Objectives / Experiments
- Setup of different refrigeration circuits
- Design, operation and adjustment of components
- Evaporation pressure, start-up, capacity and
- Refrigeration controllers
- Electric thermostat
- Manual valve as expansion element
- Post-injection valve
- Solenoid valve with coil
- 4/2-way reversing valve
- Power and auxiliary contactor
- Time relay
- Defrost timer
- Hot gas defrosting
- Read and understand technical drawings and
- Operating instructions
- Fault finding
Specification
- Components for the setup of complex refrigeration circuits in conjunction with Base Unit for Refrigeration `Training System and components for Basic Experiments
- Post-injection valve
- Refrigeration controller with PTC sensor
- defrost timer, timing interval 30min
- Time relay
- 4/2-way reversing valve, solenoid valves
- Electric thermostat as temperature controller
- Power and auxiliary contactor
Technical Data
- Rated controller capacity at t0=-10°C, tc=25°C
- Evaporation pressure: 2,8kW at deltap=0,2bar
- Start-up: 5,3kW at deltap=0,2bar
- Capacity: 4,8 kW at offset=0,7bar
- Suction line receiver: 0,3L, max. 28bar
- Temperature controller: -5...35°C
- Refrigeration controller: -40...110°C
- Post-injection valve: -45...35°C
- Time relay: response delay: 0,05s...100h
Measuring ranges
- Pressure, evaporation: 0...5,5bar
- Intake pressure: 0,2...6bar
- Pressure, capacity controller: 0,2...6bar
Dimensions and Weight
- Plate height: 297mm
- Weight: approx. 25kg
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