| http://www.w3.org/ns/prov#value | - The whirl chamber boiler plant according to claim 1 wherein the inclination of the bottom portion of said chamber is such as to allow fuel and inert material to be passed by gravity to the generally central inlet means at the chamber bottomportion such that the fuel contacts the hot inert material and reaches its ignition temperature so as to burn upon contact with the combustion air.4.
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