EXPANSION DEVICE FOR USE IN A WORKING MEDIUM CIRCUIT, AND METHOD FOR OPERATING AN EXPANSION DEVICE

摘要

The invention relates to an expansion device (1) for use in a working medium circuit, wherein within the working medium circuit a process can be carried out which corresponds to that of a Clausius-Rankine cycle or an Organic Rankine cycle. According to the invention, the expansion device (1) is designed as a scroll-type working machine which can be traversed in the expansion direction by a working medium (AM) which circulates in the working medium circuit (AK), wherein an expansion ratio of the scroll-type working machine and/or a supply of working medium (AM) to the scroll-type working machine can be varied. The invention also relates to a method for operating an expansion device (1).