Patent ID: 11925479
Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. An apparatus in accordance with claim 8, characterized in that the apparatus comprises calculation means for determining the value D which are configured to carry out a temperature change at the side of the heat carrier medium and to integrate the time development of the temperature of the heat carrier medium at the inlet and at the outlet over time and to determine the value D from the relationship

D=Qd(1−Ado/Adi)  (4)

where Ado represents the area, optionally corrected by a baseline, below the temperature curve over time at the outlet side of the heat exchanger and Ad; represents the area, optionally corrected by a baseline, below the temperature curve over time at the inlet side of the heat exchanger; and/or
in that the apparatus comprises calculation means which are configured to determine the value D from the relationship

D=fQb  (5)

where provision is preferably made that the value f is 1 or is in the range 1±0.1 or 1±0.2.