A theoretical analysis on microwave heating of food slabs attached with ceramic plates: Role of distributed microwave incidence

Microwave material processing—a review

“…111 Further investigations for other materials such as oil and beef samples reported that the supporting plate (ceramic and/ or metallic) may drastically alter the heating effects with a range of dielectric properties. 69,[112][113][114][115] It was observed that beef samples would exhibit greater thermal runaway especially with SiC plate in the presence of both sides distributed microwave incidence, whereas the oil samples would exhibit smaller thermal runaway effects with both sides equidistributed microwave incidence irrespective of any ceramic plates. 69,112 It was observed the average power absorption was enhanced for samples (beef-air and beef-oil) in presence of Al 2 O 3 support whereas the average power was smaller with SiC support for porous dielectric materials such as beef-air (b/a) and beef-oil (b/o).…”

“…69,[112][113][114][115] It was observed that beef samples would exhibit greater thermal runaway especially with SiC plate in the presence of both sides distributed microwave incidence, whereas the oil samples would exhibit smaller thermal runaway effects with both sides equidistributed microwave incidence irrespective of any ceramic plates. 69,112 It was observed the average power absorption was enhanced for samples (beef-air and beef-oil) in presence of Al 2 O 3 support whereas the average power was smaller with SiC support for porous dielectric materials such as beef-air (b/a) and beef-oil (b/o). Three test cases for porosities (/) 0.3, 0.45 and 0.6 were considered and it was found that runaway heating was observed at the face which was not attached with support for b/a samples and the intensity of thermal runaway increases with porosity whereas lower thermal runaway was observed for w/o samples at all porosity values.…”

Role of metallic and composite (ceramic–metallic) supports on microwave heating of porous dielectrics

“…(17), q(z) is defined as in Eq. (12). In a n multilayered sample, the energy balance equation for the lth layer obtained from Eq.…”

“…A generalized heating strategy for materials due to uniform plane waves was derived. A theoretical analysis of microwave heating of food slabs supported by ceramic plates was also carried out by Basak and Meenakshi [11,12]. Their study involves processing of beef with oil layers with or without support for various cases.…”

A new microwave processing strategy for food-ceramic composite layer confined within ceramic plates

“…The heating rate may not be uniform and the products show hot and cold spots, which depend on product geometry (Ayappa et al, 1991;Bonafonte et al, 2007). In order to analyze various properties under microwave processing, a large amount of earlier research involves mathematical model based on the unsteady state energy balance equation (Ayappa et al, 1991, Ayappa, Davis, Davis, & Gordon, 1992Basak & Priya, 2005;Basak & Meenakshi, 2006;McMinn et al, 2003;Yang & Gunasekaran, 2004). On considering the importance of microwave heating, Finegan, Laibinis, and Hatton (2006) carried out experiments to find the temperature distribution within the microwave cavity.…”