quick overview :

Vacuum Evaporator

This apparatus allows concentration under vacuum conditions of food and biological products :

• Apple juice concentration.
• Concentrated sugared milk manufacturing.
• Tomato sauce concentration.
• Fermented musts concentration.

Teaching objectives

• To establish material balance on the evaporator.
• To establish energy balance on the condenser.
• To study the pressure influence and the agitation speed on evaporation time.
• To study the pressure influence on the boiling point temperature of the product.
• To calculate the conduction heat transfer coefficients in agitated tank.To calculate Reynolds number of the agitator.
• To calculate Reynolds number of the agitator.

Technical specifications

• A tank equipped with a soldered and sealed double jacket containing the product.
• Material: stainless steel 304L.
• Surface state: grain 320 (inner) grain 220 (outer).
• A variable-speed scraping agitator with setting potentiometer.
• An anchor with variable speed motor power 0,75 kW.
• Tank displacement by manual jack.
• Tank rotation around an axis for washing after treatment of difficult products.
• Safety sensor indicating tank presence before starting the agitator.

The tank includes :

• 1 Pt100 temperature probe.
• 1 exhaust ball valve.
• 1 funnel for product introduction.
• 1 glass observation window on the top of the tank.
• 4 fittings, safety valve, control manometer.
• 1 vacuum control valve, connection of the vacuum unit.
• 1 plunging cane mounted on SMS plug for sampling

The double wall circuit is made of :

• 2 threaded fittings (20/27).
• 1 Pt100 probe for the double jacket input temperature.

The safety control panel includes :

• Observation window with lighting.
• Cover opening and lifting control.
• Agitator control, speed control with display.
• Vacuum pump control and protection.
• Heating unit safety device

Dimensions

• 1000 x 1000 x 1900 mm.

Essential requirements

• This apparatus needs the vacuum generator unit and the heating unit.
• Total consumption with and : 7 kW.
• Power supply: 380 V (3P + Gr + N).