research
ALAT PENGERING (PENIRIS) SISTEM VAKUM PADA GORENGAN
CERIPING UBI, PENGHEMAT PEMAKAIAN MINYAK GORENG
UNTUK INDUSTRI KECIL PEDESAAN
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Abstract
The cassava chip industry "Berkah", in producing the chips as the products, often
gets difficulties especially in fastening the marketing delivery. Having been fried, the
cassava chips are to firstly be dried with conventional system for more than 24 hours and
48 hours for serondok snack, then they are made in plastic packages. The problem is that
the chips still take number of oil with them so that the product can be easily rancid and
moldy though they are already in the packages. It is difficult to make ,the oil in the chips
out and efforts taken may costmuch so that it is hard for the small-scale industry to have
such an act. Considering all the aspects revealed above, the servants wish to solve the
problem by means of voucher programs, to make a vakum system drayer for cassava
chips frying.
The method used is making a vacuum system dryer within the specification as
follows: (1) the vacuum system dryer is a cylinder tube;.(2)it consists of two tubes; (3)
the lower tube is used to store the chips going to be dried and the upper one functions as
the sucker; (4) the diameter and the high of the lower tube are 450 mm and 750 mm, and
that of the upper one are 450 mm and 450 mm; (5) it is placed on the upper tube a fan
played with, 1850 rpm by means of. electric motor ~ HP; (6) the upper tube can be
moved for .180 degree by using switch placed to the holder. The chips, which are going
to be dried are put into the tube, then air is given and absorbing in done through pone of
the tip of the tube. The oil will be absorbed in two ways, by means of pressure
differences and air flow making the oj! out of the chips.
. The resultsof this practiceare as follows:(1) to dryserondoksnack,it is required2
hours; (2) the oil succeeded to chase in one process is about 50 to 60 cc; (3) the snacks
are to be standing-put in the tUbe; (4)time required for arranging the snacks in standing
position is about 20 minutes; (5) having worked for 2 hours, the machine should be
stopped;.,(6)th~ electricity used for the 2 hours is for about Rp 539; (7) for the tube with
the capacity of 1.5 kg; (8) time required for drying about 3 kg (2/3 of the tube) chips is
approximately 45 menutes, and the oil gained for each process is 15 cc. The cost for
drying the cassava chips is % hours is % X 0,8 KW X R-p337/KWh = Rp 187 for each
drying process