A fluid machine for a waste heat collecting system for an internal combustion engine has an object to make most use of the collected waste heat and an operation of a compressor, an alternator or the like by a rotational driving force from an expansion device function well even during an engine running is stopped. The invention also relates to a solid catalyst component obtainable by said process. The conditioning pulse is generated in such a way that the valve definitely opens at most for a predefined opening period and then closes again. The conductive composition including the mixture can be used for a collector such as a fuel cell.