In addition to their number, the UF-CPC 200 also measures the size of the droplets and provides the user with additional information concerning the condensation process. This novel and patented (German patent no.: DE 10 2005 001 992 A1) working fluid delivery system provides greater flexibility. The user is no longer limited to butanol or water but may also opt for more environmentally friendly or better suited working liquids for special applications, in addition to the butanol and water.