Conditioning system including vapor compression system and humidity control system

A conditioning system comprising:

• a vapor compression system including:
• an evaporator,
• a condenser,
• a first fan for producing a first airflow across the evaporator toward a conditioned interior space, and
• a second fan for producing a second airflow from the condenser toward an exterior space;
• and
• a humidity control system including:
• a first mass exchange device positioned in the first airflow downstream from the evaporator, the first mass exchange device including a plurality of first cavities each configured to permit a flow of a liquid desiccant from an inlet of the first mass exchange device to an outlet of the first mass exchange device, wherein each first cavity of the first mass exchange device has a U-shaped cross section from the inlet to the outlet perpendicular to a direction of the flow of fluid desiccant, wherein the U-shaped cross section defines an open portion exposed to the first airflow, and the open portion of each first cavity is covered by a first vapor permeable membrane,
• a second mass exchange device positioned in the second airflow downstream from the condenser, the second mass exchange device including a plurality of second cavities each configured to permit a flow of the liquid desiccant from an inlet of the second mass exchange device to an outlet of the second mass exchange device, wherein each second cavity of the second mass exchange device has a U-shaped cross section from the inlet to the outlet perpendicular to a direction of the flow of fluid desiccant, wherein the U-shaped cross section defines an open portion exposed to the second airflow, and the open portion of each second cavity is covered by a second vapor permeable membrane, and
• a liquid desiccant heat exchanger coupled in fluid communication with the first mass exchange device and the second mass exchange device, the liquid desiccant heat exchanger including a first path for providing liquid desiccant in a first direction from the first mass exchange device to the second mass exchange device, and a second path adjacent the first path for providing liquid desiccant in a second direction from the second mass exchange device to the first mass exchange device, wherein the first path is thermally coupled to the second path.