Resumo

PEREZ ONES, Osney; ZUMALACARREGUI DE CARDENAS, Lourdes; CALDERIN, Nayla Llanes  e  LOPEZ VALDES, Nelivert. Cooling water reduction in the plastic bottles blowing area at a rum industry. Ing. Desarro. [online]. 2014, vol.32, n.2, pp.260-278. ISSN 0122-3461.

In this paper, the refrigerant condensing system in the plastic bottles blowing area at Rum industry is presented. Target values of temperature and water quality should be obtained for a good process. Rejected heat at the blowing machine and the water flow at the condenser were calculated. Refrigeration cycle COP was 2.44, with 51 % relative efficiency. Refrigeration cycle was simulated using HYSYS. Influences of pressure and refrigeration on the cycle parameters were analyzed. Three variants were evaluated in order to improve the refrigeration cycle: a plastic forced-draft cooling tower, 2.5 m diameter and 6 m height; a cooling pond, 100 m2 and the substitution of the refrigerant. The best variant was number 2, with $21 508 as investment with IRR 44.9 %, higher than 12 %, and ROI 53.2 %, higher than 30 %. The investment is recovered in a year.

Palavras-chave : thermoplastic rum bottle; refrigeration cycle; cooling tower.

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