drying process of berry fruit by vacuum drying equipment (simulation process via comsol)

12
DRYING PROCESS OF BERRY FRUIT BY VACUUM DRYING EQUIPMENT (SIMULATION PROCESS VIA COMSOL) By Sajjad Khudhur Abbas ‘P81540’ Research Title Pitch Presentation

Upload: sajjad-khudhur-abbas

Post on 13-Jan-2017

28 views

Category:

Engineering


0 download

TRANSCRIPT

PowerPoint Presentation

DRYING PROCESS OF BERRY FRUIT BY VACUUM DRYING EQUIPMENT (SIMULATION PROCESS VIA COMSOL) By Sajjad Khudhur Abbas P81540

Research TitlePitch Presentation

The dry berries are worthy products since it contains all the vitamins spectrum, for that reason, drying process for the food is producing valuable output. Drying process for the food is not interested in vitamins amount only, its about the maintenance level for minor, and macro substances (Ceylan, 2007). Drying process is removing all the interior water of the fruit and has several advantages like producing low weight product, not expensive from packing side, long life storing, and no need for cooling application during storing or transportation (Chen X. D., 2007). INTRODUCTION SAJJAD K. A. Pitch PresentationVacuum Dryer

berryis a small, pulpy and often edible fruit. Berries are usually juicy, rounded, brightly colored, sweet or sour, and do not have a stone or pit, although many pips or seeds may be present.[1]Common examples arestrawberries,raspberries,blueberries; andred-andblackcurrants.[2]In Britain,soft fruitis ahorticulturalterm for such fruits2

There are different kind of berries, such as strawberry, black currant, raspberry, and cranberry. The objective of this project is simulating the drying process for berry fruits by using vacuum dryer. OBJECTIVESAJJAD K. A. Pitch PresentationVacuum Dryer

LITERATURE REVIEW Several industries had reported that using vacuum dryer in food manufacturing is applicable but its high cost (Giri, 2007; Clary, 2007). The hardest step in drying process is maintaining the dryer power, as well as the temperature to gain product with the required properties (Lombra, 2010). Some researchers had used integrated hot-air and vacuum dryer together, but they figured out its the same results as well as using vacuum dryer (Beaudry, 2004). SAJJAD K. A. Pitch PresentationVacuum Dryer

CHOSEN EQUIPMENT This drying equipment is consisting from 70 L volume of a steel cylindrical chamber. The inside pressure is 2 mbar, which is provided by the vacuum pump.

Vacuum dryer design structure SAJJAD K. A. Pitch PresentationVacuum Dryer

ADVANTAGES & DISADVANTAGES Vacuum drying technology is Considered as the most applicable way Allowing to be operated with less expensive conditions, like reducing the input power. Applied in many kind of manufacturing process, like cream, yoghourt, fruit milk, and curd cakes production Known as field inhomogeneity. This problem is occurring as some regions in the dryer are overheated, so that it is producing hotpot (Vadivambal, 2007). SAJJAD K. A. Pitch PresentationVacuum Dryer

Methodology COMSOL simulation MethodologyPhysicsHeat TransferSolidsStudyTime dependentParametersEquipment DrawingFollowing the Designing structure as had shown in beforeHeat sourceHeat fluxMeshingExtremely fineRange (0,1,70) hourSAJJAD K. A. Pitch PresentationVacuum Dryer

Parameters Variable Definition CodeAmountCake depth H025[cm] Cake radius R035[cm] Initial temperature T0 25[degC] Jacket temperature Th 120[degC] Initial moisture contentwL0 0.15

SAJJAD K. A. Pitch PresentationVacuum Dryer

Results This is the final stage after drying the berry for 70 hours of duration. The temperature distribution had showed great spreading through the berry cake as shown in the figure below.

SAJJAD K. A. Pitch PresentationVacuum Dryer

Conclusion The results were satisfying the industry demand but its still following the material kind and the dryer power and etc.

In conclusion, drying process is not complicated but it needs several different simulations to get the optimistic temperature for avoiding any waste of energy and time. SAJJAD K. A. Pitch PresentationVacuum Dryer

Recommendations for future studies changing in the cake dimensions with the temperature, in order to get the highest process performance. For that, this simulation process was part from the optimization process but as we know, optimization is not stopping at any step. SAJJAD K. A. Pitch PresentationVacuum Dryer

Thank You

SAJJAD K. A. Pitch PresentationVacuum Dryer