Lyophilization Trainer Refrigeration Trainer Didactic Equipment

LIF Lyophilization Trainer Refrigeration Trainer Didactic Equipment

This trainer, specifically conceived for educational aims, allows to study the lyophilization process that is the best system for preserving perishable goods. It allows to determine the optimum cycle, for quality and cost, of any product by using vacuum to keep the temperature of the product itself lower than its eutectic temperature.
TRAINING PROGRAM
• Plant starting and safety devices intervention checking
• Determining the eutectic temperature of a substance
• Control of product internal and surface temperature during the lyophilization process and determination of the optimum cycle for each product
• Studying the operation of a thermostatic expansion valve and its calibration
• ON/OFF control: the compressor thermostat
• Analyzing the system behaviour versus the variation of:
- thermostatic valve superheat

- condenser fan intervention pressure
- set vacuum degree
- thermostat set-point temperature
• Plotting the cycle in the refrigerant pressure-enthalpy diagram
• Data acquisition and calculation of:
- heat balances corresponding to evaporator, condenser, compressor
- refrigerant mass flow
- ideal and actual EER
- volumetric compression efficiency
TECHNICAL SPECIFICATIONS
• Steel structure mounted on wheels, painted and treated in the oven
• Colour silk-screen-printed schematic diagram of the hydraulic circuit with warning LEDs
• Hermetic compressor
• Forced-air condenser controlled by pressure switch
• Coil evaporator
• Thermostatic expansion valve
• Compressor control thermostat
• Liquid receiver

• On-off valves, sight glass, dehydrator filter
• Valve for plant vacuum, refrigerant charging and recovering
• Pipes connecting the various components painted with different colours
• Vacuum pump
• Vacuostat for setting the desired vacuum level
• Vacuum breaker valve
• Lyophilization room
• Frost room
• Full set of instruments for data acquisition, including:
- flowmeter
- high and low pressure gauges for detecting pressures on several points along the hydraulic circuit
- thermometer for controlling the product internal and surface temperature
- 2 electronic thermometers with Pt100 probes to be inserted into several test points along the hydraulic circuit
- 1 Pirani vacuum gauge for precise vacuum measurements
- digital multimeter
• Double pressure switch
• Thermomagnetic - earth leakage control button
• Emergency button
Power supply: 230 Vac 50 Hz single-phase - 1300 VA (Other voltage and frequency on request)
Dimensions: 180 x 80 x 180 cm
Net weight: 179 kg
Supply with 
THEORETICAL – EXPERIMENTAL HANDBOOK