Civil Engineering Reference
In-Depth Information
Metallic Double
Corrugations Filter
b/2
l
b
b
l
d
a
w
Sample
Figure 6.34
Doubly corrugated metallic filters. (From Clemente-Fernández, F.J., Monzó-
Cabrera, J., et. al. Analysis of reactive and resistive open waveguide filters
for use in microwave-heating applicators.
COMPEL: The International Journal
for Computation and Mathematics in Electrical and Electronic Engineering
, 2011,
30
(5):1606-1615. With permission.)
6.5 SUMMARY
The effectiveness of the microwave-assisted concrete curing, concrete
demolition, and concrete-recycling methods discussed in Chapters 2 to 4
depends on the efficiency of the applicators designed to apply these meth-
ods in practice. The applicators should be designed by considering the oper-
ating costs, efficiency, ease of use, and attendant safety and health issues. In
this chapter, the configuration and various components of typical industrial
microwave heating systems suitable for use in the applications discussed in
this topic were introduced. By taking into account the considerable inlu-
ence of applicator characteristics on the distribution and intensity of the
incident microwave field, focus was then placed on designing the micro-
wave applicators. The basics involved in the design of three important types
of applicators used in microwave-assisted concrete-processing methods as
discussed in this topic were presented. These applicators include open-ended
waveguide applicators, multimode cavity applicators, and continuous-
throughput applicators. A number of methods to improve efficiency, heat-
ing uniformity, and safety and health issues associated with the design of
applicators were discussed.
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