During operation of the device of FIG 1, a charge of coal 11 to be coked is introduced through filling opening 9 into coking chamber 3, which in {HEAD ~ this embodiment} is designed as a cavity or {TAIL ~ chamber resonator} 
is designed as
During operation of the device of FIG 1 , a charge of coal 11 to be coked is introduced through filling opening 9 into coking chamber 3 , which in { HEAD ~ this embodiment } is designed as a cavity or { TAIL ~ chamber resonator }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL