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Mnogi uređaji za ekstrakciju pri svome radu troše značajne količine rashladne vode. Iz tog razloga javlja se potreba za racionalizacijom potrošnje rashladne vode. U ovome radu provedena je racionalizacija potrošnje rashladne vode u univerzalnom uređaju za ekstrakciju B-811 LSV. Studija potencijalne uštede rashladne vode napravljena je primjenom dimenzioniranog rashladnog tornja laboratorijskog mjerila. Za proračun rashladnog tornja određen je protok i temperatura rashladne vode na ulazu i izlazu iz hladila univerzalnog uređaja za ekstrakciju B-811 LSV, te temperaturu i relativnu vlažnost zraka u laboratoriju gdje su mjerenja provedena. Za mjerenje temperature rashladne vode korišteni su termoparovi tipa T. Na temelju izmjerenih parametara proveden je proračun rashladnog tornja. Proračunom rashladnog tornja utvrđena je potrebna visina (81,45 cm) i promjer baze rashladnog tornja (13,96 cm). Za potrebe provjere proračuna napravljene su dvije simulacije u programu CodeSkulptor. Rezultati dobiveni racionalizacijom potrošnje rashladne vode ukazuju na moguću uštedu u iznosu od 56,87 %. Many of the extraction devices use significant amount of cooling water to operate. Because of this very reason the need for rationalizing the cooling water consumption appeared. In this work, the rationalization of the cooling water consumption was conducted in the universal extraction unit B-811 LSV. The study of potential water savings was conducted by scaling a cooling tower to laboratory size. To calculate the dimensions of cooling tower it was necessary to determine the flow and the temperature of cooling water on inlet and outlet point of the condenser in the universal extraction unit B-811 LSV, also the temperature and relative humidity of laboratory air. For the measurement of cooling water temperature, the T-type thermocouples were used. The cooling tower dimensions were calculated by previously determined parameters. It was determined that the needed height and the base diameter of the cooling tower were 81.45 cm and 13.96 cm, respectively. For the verification of conducted calculations, two simulations were made in CodeSkulptor program. The results of scaling the cooling tower clearly indicate the possibility of lowering the cooling water consumption by 56.87%.

Na Prehrambeno-tehnološkom fakultetu Osijek (PTFOS) se kao energent koristi voda za piće u rashladne svrhe jer ne postoji sustav rashladne vode. Voda za piće kao rashladna voda se koristi u laboratorijima za znanstveno-istraživački rad i nastavni rad (studentske vježbe). Na temelju analize potrošnje rashladne vode s ciljem uštede i ekološkog pristupa potrošnji vode, te smanjenja izdataka za vodu, u okviru ovog diplomskog rada izrađen je model rashladnog tornja. Za vrijeme provođenja vježbe Određivanje masti po Soxhletu u trajanju od 240 min potrošeno je rashladne vode 243,69 L. Provođenjem vježbe Određivanje masti po Soxhletu uz hlađenje rashladne vode u konstruiranom modelu rashladnog tornja za istu vježbu utrošeno je 5,33 L što je za 97,81 % manje u odnosu na provođenje vježbe bez hlađenja rashladne vode u rashladnom tornju. Od ukupno potrošene količine vode na godišnjoj razini za koju se drži da je potrošena u rashladne svrhe na PTFOS-u u znanstveno-istraživačke i nastavne svrhe, (1.241,5 m3) moguće je primjenom konstruiranog modela rashladnog tornja uštedjeti najmanje 87,5 % (1.086,1 m3) što iznosi 15.898,5 kn/god. At the Faculty of Food Technology Osijek (PTFOS) drinkable water is used in the cooling purposes because there is no cooling water system at the institution. Drinking water as cooling water is used in laboratories for scientific research and teaching activities (student exercise). Based on the analysis of the consumption of cooling water with the aim of saving and ecological approach to water consumption and reduction of expenditures for water, in the context of this diploma thesis the model of cooling tower was made. While conducting exercises Determination of fat by Soxhlet for a period of 240 minutes 243.69 L was spent. Conducting the exercise Determination of fat by Soxhlet using water cooled down in the model of cooling tower the 5.33 L od cooling water was spent for whole excercise, which is 97.81% less than conducting exercise without cooling the cooling water in the cooling tower. Of the total amount of water consumed on an annual basis which is considered to be consumed in cooling purposes at PTFOS-in for scientific and teaching activities (1,241.5 m3), using the constructed model of the cooling tower, can save at least 87.5% (1086.1 m3) which amounts to 15,898.5 kn/year.