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Joint International Conference on Long-term Experiments ...

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- preheaters<br />

- towards c<strong>on</strong>densati<strong>on</strong><br />

- thick juice<br />

- heating<br />

- general services<br />

Fig. 1 - Thin juice c<strong>on</strong>centrati<strong>on</strong> installati<strong>on</strong><br />

MATERIALS AND METHODS<br />

Another c<strong>on</strong>centrati<strong>on</strong> installati<strong>on</strong> used in sugar plants is that of four effects and “0<br />

body” whose thermal regime is presented in table 2. This installati<strong>on</strong> is profitable<br />

especially in the c<strong>on</strong>diti<strong>on</strong>s of juice processing with no thermal stability, as well as in<br />

the case of plants that d<strong>on</strong>’t have electric vortex wheels.<br />

Table 2. Research methods regarding the temperature regime at the stati<strong>on</strong> of<br />

vaporizati<strong>on</strong> c<strong>on</strong>centrati<strong>on</strong> with four effects and “0 body”<br />

Basic indicators<br />

Number of vaporizati<strong>on</strong> effect<br />

0 1 2 3 4<br />

Heating steam temperature 141 114 106 97 84<br />

Heating steam pressure, ATA 3,89 1,71 1,91 0,95 0,56<br />

Useful temperature difference, °C 25,5 6,2 6,4 10,4 22,4<br />

Boiling temperature for juice, °C 116,3 108,6 100,4 87,4 61,4<br />

Temperature loss due to<br />

hydrostatic pressure °C<br />

0,3 0,6 1,4 2,4 3,4<br />

Sec<strong>on</strong>dary steam temperature, °C 115 107 98 84 57<br />

Sec<strong>on</strong>dary steam pressure, ATA 1,77 1,35 0,99 0,58 0,184<br />

Temperature losses in the steam<br />

pipes °C<br />

1 1 1 1 1<br />

C<strong>on</strong>densate temperature, o C 139 112 104 95 81<br />

403

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