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Journal of Microwave Power
and Electromagnetic Energy (JMPEE) |
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TITLE |
A Tunable
Microwave Applicator for Extraction of Date-Juice and Similar Products [PDF] |
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AUTHORS |
I. A. Ali 2000 35 1 15-24 |
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Abstract A tunable
microwave applicator for extraction of date juice and similar products has been
developed, designed and constructed. It consists of two main units: a
microwave unit and a press/filter unit. The microwave unit consists of a tunable cylindrical cavity resonator, a section of aluminum waveguide with aperture coupling and tuning mechanism
and a locally assembled microwave generator working at 2.45 GHz. The
press/filter unit is made from a low-loss, heat resistant material that works
inside the cavity. Performance tests at both low and high power levels showed
good performance characteristics with power conversion efficiency of more
than 70%. Comparison with a commercial microwave oven and an electric heater
showed the superiority of the present applicator, in terms of heating rate
and power coupling efficiency. Key Words: Tunable applicator, microwave applicator, press/filter, date juice extraction |
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