Thin wall polyether block amide membrane tubing and module

A pervaporation module comprising:

• a) a composite Polyether block amides (PEBA) tube comprising:
• i) composite PEBA film comprising:
• a porous scaffold support;
• and
• ii) an overlap area of the composite PEBA film that is fused to form said PEBA tube;
• iii) an outside surface;
• iv) an inside surface;
• v) an inlet;
• and
• vi) an outlet;
• b) an inlet tube sheet sealed to the inlet of the composite PEBA tube;
• c) an outlet tube sheet sealed to the outlet of the composite PEBA tube;
• d) a flow of water through the composite PEBA tube from the inlet tube sheet to the outlet tube sheet;
• e) a flow of fluid over the ultra-thin composite PEBA tube;
• wherein water vapor passes through the composite PEBA tube and into the flow of fluid thereover to increase the relative humidity of the flow of fluid.