20.500.12556/DKUM-92305 Energy intake models for intermittent operation of dead-end microfiltration filling line In filling lines equipped with membrane separation devices in the form of filters energy, consumption is only one of the important working parameters, the other being sustainable filter performance in terms of separation efficiency. As the filling line is typically equipped with a valve, intermittent operation of the filter is an important form of its use. Whereas the overall energy consumption of the filtration process is governed by the continuous operation mode, the intermittent mode, characterised by opening/closing of the valve, contributes most to problems of filter failure, i.e., the breakthrough of filtered particles through the membrane. A model for determination of the energy intake of a microfiltration membrane during the opening and closing of a valve is presented in this work. The model is based on computational analysis of the pressure wave signals recorded during the opening/closing of the valve using Fourier transform, and expressed in a nondimensional filter area specific energy intake form. The model is applied to a case of constant pressure dead-end microfiltration with three filter types: a single membrane filter, a stacked filter and a pleated filter with filtration surface areas ranging from 17.7 cm2 to 2000 cm2. Both clean filters, as well as partially clogged filter cases are taken into account. Second order polynomial models of the energy intake are developed and evaluated based on extensive analysis of the experimental data. The analysis of energy intake results show that the largest energy intake was observed for the clean filter case. When membrane fouling occurs at the constant flow rate values it leads to larger energy intake, however, due to a decreasing specific flow rate during fouling these values do not exceed the clean filter case. membrane filtration water hammer effect membrane energy intake filter clogging membranska filtracija udarni efekt vode membranski vnos energije zamašitev filtra true false true MDPI AG Angleški jezik Slovenski jezik https://www.mdpi.com/journal/energies © 2022 by the authors Članek v reviji 2025-03-28 07:34:58 2025-03-28 07:34:58 2025-03-29 03:12:47 0000-00-00 00:00:00 2022 0 0 str. 1-18 8854 iss. 23 Nov. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2022-10-21 2022-11-21 2022-11-23 532.51 132258563 10.3390/en15238854 1996-1073 energies-15-08854-v2.pdf energies-15-08854-v2.pdf 1 F4C9F9AC4832A071F315EA0BBA5C65A3 51279200cecfabbe71a2bed6fefa08d7790b7cbd82074b7e88728fb6e0a98ab0 4c5e1e8e-0b9f-11f0-af5a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189758 https://www.mdpi.com/1996-1073/15/23/8854 0 52f3b594-0b9f-11f0-af5a-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=189759 Fakulteta za strojništvo 0 0 0