Patent ID: 8268059

Claim:
Waste gas system ( 1 ) for bioreactors, comprising: at least one gas outflow duct ( 2 ) for discharging waste gas from a bioreactor vessel ( 3 ), a hydrophobic sterile filter ( 5 ) arranged upstream of an opening ( 4 ) of the at least one gas outflow duct ( 2 ) toward surroundings, a heat exchanger ( 6 ) located upstream of the hydrophobic sterile filter ( 5 ), the at least one gas outflow duct ( 2 ) being divided in at least one cooling zone ( 7 ) of the heat exchanger ( 6 ) into a multiplicity of subducts ( 2 ′) and being extended in at least one heating zone ( 8 ) of the heat exchanger ( 6 ) to a calming zone ( 2 ″) for the waste gas, the heating zone ( 8 ) and the calming zone ( 2 ′) being configured to achieve a sufficiently low flow rate for impeding any remaining condensate drops from being entrained with the waste gas and transported to the hydrophobic sterile filter ( 5 ).