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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


Technical specifications

A platform-mounted laboratory model with wheels made of :
- 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 (UT404P)
- 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



1000 x 1000 x 1900 mm


Essential requirements

- This apparatus needs the vacuum generator unit (UT404P) and the heating unit (UT403) (6 kW)
- Total consumption with UT404P and UT403 (6 kW): 7 kW
- Power supply: 380 V (3P + Gr + N)


MP315 diagram - click to enlarge :

MP315 SA