Ohmic processing of solid-liquid mixtures: Heat generation and convection effects
Ohmic heating allows large food particles to heat at the same rate as liquids, and enables ‘high-temperature short-time’ sterilisation of foods containing up to 25-mm particles. The rate of heat generation depends on the local electric field strength. Around materials of high or low electrical condu...
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| Veröffentlicht in: | Journal of food engineering 1993, Vol.18 (2), p.101-125 |
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| container_title | Journal of food engineering |
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| creator | Fryer, P.J. de Alwis, A.A.P. Koury, E. Stapley, A.G.F. Zhang, L. |
| description | Ohmic heating allows large food particles to heat at the same rate as liquids, and enables ‘high-temperature short-time’ sterilisation of foods containing up to 25-mm particles. The rate of heat generation depends on the local electric field strength. Around materials of high or low electrical conductivity, the electric field can be distorted. Depending on fluid viscosity and solids fraction, this distortion may cause local temperature variations in the liquid around the particle which might affect both the heating rates and thus the process time of food particles. Experiments have been conducted to determine the magnitude of temperature variations in the liquid both in ideal cases and for real foods. A number of possible models to predict liquid temperatures have been tested, in which various amounts of convection are assumed. |
| doi_str_mv | 10.1016/0260-8774(93)90031-E |
| format | Article |
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Psychology</subject><subject>General aspects</subject><subject>heat production</subject><subject>heat treatment</subject><subject>liquids</subject><subject>mathematical models</subject><subject>mixtures</subject><subject>particles</subject><issn>0260-8774</issn><issn>1873-5770</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNp9kE1LAzEQhoMoWD_-geAeRPSwOtlsNlkPgkj9gEIR9RzSZFIj240mW9F_b2rFo4dhZuCZ4eUh5IDCGQXanEPVQCmFqE9adtoCMFqON8iISsFKLgRsktEfsk12UnoFAA5VNSIP05eFN8VbDAZT8v28CK5IofO27Pz70tti4T-HZcR0UdyhHoo59hj14ENf6N4WJvQfaH5WdC5PaY9sOd0l3P_tu-T5Zvx0fVdOprf311eT0tRVPZQzSyUFLoA5zixa5lDWXHLLDaOg0QorZC7HrNSUybbRTot6NgPtWOsk2yXH6785-_sS06AWPhnsOt1jWCZFGyZBiiaD9Ro0MaQU0am36Bc6fikKauVPreSolRzVMvXjT43z2dHvf52M7lzUvfHp77bmNeMtzdjhGnM6KD2PGXl-rIAyoELQiq2IyzWB2caHx6iS8dgbtD5mYcoG_3-Sb6YnjcY</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Fryer, P.J.</creator><creator>de Alwis, A.A.P.</creator><creator>Koury, E.</creator><creator>Stapley, A.G.F.</creator><creator>Zhang, L.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7TC</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>1993</creationdate><title>Ohmic processing of solid-liquid mixtures: Heat generation and convection effects</title><author>Fryer, P.J. ; de Alwis, A.A.P. ; Koury, E. ; Stapley, A.G.F. ; Zhang, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c424t-bd18105703f53ded3fe84585d5c310aed7d787d7f3d8a13896afa74bb0af39f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Biological and medical sciences</topic><topic>convection</topic><topic>Food engineering</topic><topic>Food industries</topic><topic>food processing</topic><topic>Fundamental and applied biological sciences. 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| ispartof | Journal of food engineering, 1993, Vol.18 (2), p.101-125 |
| issn | 0260-8774 1873-5770 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Biological and medical sciences convection Food engineering Food industries food processing Fundamental and applied biological sciences. Psychology General aspects heat production heat treatment liquids mathematical models mixtures particles |
| title | Ohmic processing of solid-liquid mixtures: Heat generation and convection effects |
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