The invention relates to a composite membrane (1) consisting of a flat
support body (2) comprising relative big through flow holes (3) and
on which at least one separating layer is applied as a membrane layer (4)
having a given number of pores and pore sizes. In order to regulate the temperature
of the support body, said support body (2) is connected to a device (5)
that can be regulated by a regulating device (S) with the purpose of supplying
a predetermined energy to the support body (2) and/or diverting energy from
the support body (2). The membrane layer (4) is applied on the support
body (2) in a heat-conductive manner so that any change in the temperature
of the support body provokes a change in the temperature of the membrane layer.
The membrane layer (4) consists of at least one temperature-dependent, expanding
membrane material that includes pores and/or defines pores so that the size of
the pores can be changed and regulated by means of the regulatable body temperature
and, hence, by means of the indirectly regulatable temperature of the membrane
layer as a result of the expansion-temperature sensitivity of the membrane material.
