TY - JOUR
T1 - Enhancing uniformity and energy efficiency of microwave heating for different cavity loads
T2 - Frequency-shifting strategies using feedback signals from solid-state microwave generators
AU - Kalinke, Isabel
AU - Pusl, Franziska
AU - Kulozik, Ulrich
N1 - Publisher Copyright:
© 2024
PY - 2024/10
Y1 - 2024/10
N2 - Novel solid-state generators offer precise control of the microwave field, a valuable capability for increasing energy efficiency and uniformity of heating through tailored frequency-selection strategies. Recent research, however, overlooks to test the adaptability of promising strategies to different microwave cavity loads. However, adaptability is crucial for real-world applications. Our study compared the performance of various strategies in the context of different microwave cavity loads, using cylindrical Gellan gel samples of 130 g and different diameters from 50 mm to 200 mm. Strategies using frequency-dependent feedback signals gathered by the microwave generator itself excelled in identifying optimal excitation frequencies across all investigated heating scenarios. These feedback signals identified resonant frequencies specific to each load before heating, enabling excitation at all resonant frequencies and achieving maximum uniformity at high energy efficiency. Additionally, feedback signals helped identify the most energy-efficient product before heating trials. In summary, detecting sample feedback before processing via the solid-state generator itself allows tailored responses to individual heating tasks of the microwave oven user.
AB - Novel solid-state generators offer precise control of the microwave field, a valuable capability for increasing energy efficiency and uniformity of heating through tailored frequency-selection strategies. Recent research, however, overlooks to test the adaptability of promising strategies to different microwave cavity loads. However, adaptability is crucial for real-world applications. Our study compared the performance of various strategies in the context of different microwave cavity loads, using cylindrical Gellan gel samples of 130 g and different diameters from 50 mm to 200 mm. Strategies using frequency-dependent feedback signals gathered by the microwave generator itself excelled in identifying optimal excitation frequencies across all investigated heating scenarios. These feedback signals identified resonant frequencies specific to each load before heating, enabling excitation at all resonant frequencies and achieving maximum uniformity at high energy efficiency. Additionally, feedback signals helped identify the most energy-efficient product before heating trials. In summary, detecting sample feedback before processing via the solid-state generator itself allows tailored responses to individual heating tasks of the microwave oven user.
KW - Cavity loading
KW - Energy efficiency
KW - Feedback
KW - Inhomogeneity/uniformity
KW - Solid-state microwave generator
UR - http://www.scopus.com/inward/record.url?scp=85203016351&partnerID=8YFLogxK
U2 - 10.1016/j.ifset.2024.103814
DO - 10.1016/j.ifset.2024.103814
M3 - Article
AN - SCOPUS:85203016351
SN - 1466-8564
VL - 97
JO - Innovative Food Science and Emerging Technologies
JF - Innovative Food Science and Emerging Technologies
M1 - 103814
ER -