Heat and mass exchanger assemblies

A data center cooling system comprising:

• a liquid desiccant conditioning system;
• and
• a heat-mass exchanger comprising:
• a housing configured to receive a flow of supply air from the liquid desiccant conditioner system;
• a header configured to receive desiccant from the liquid desiccant conditioner system and feed the desiccant onto at least one heat transfer tube within the housing, the at least heat transfer tube configured to dissipate heat to the desiccant to generate relatively higher concentration desiccant;
• and
• a collector configured to capture the higher concentration desiccant and feed the higher concentration desiccant to the liquid desiccant conditioner system to dehumidify a flow of outside air.

A heat-mass exchanger, comprising:

• a housing configured to receive a flow of supply air cooled and dehumidified by a liquid desiccant conditioner system;
• a first header configured to feed desiccant onto at least a first heat transfer tube within the housing, the at least first heat transfer tube configured to dissipate heat to the desiccant to generate relatively higher concentration desiccant;
• a collector configured to capture the higher concentration desiccant and feed the higher concentration desiccant to the liquid desiccant conditioner system;
• and
• a second header configured to feed water onto at least a second heat transfer tube within the housing.