Methods and systems for turbulent, corrosion resistant heat exchangers

A support structure for use in a heat exchanger in a desiccant air conditioning system, comprising:

• two molded support plates attached to each other back-to-back;
• each support plate comprising an array of integrally-formed raised features on a front side thereof for providing a bonding surface for a membrane and for mixing or turbulating flow of a liquid desiccant flowing between the front side of the support plate and the membrane;
• each support plate also comprising a plurality of integrally-formed raised features on a back side thereof for setting a distance from the other support plate, mixing or turbulating flow of a heat transfer fluid flowing between the support plates, and providing a bonding surface for attaching the support plates;
• and
• each support plate also including one or more openings through which the liquid desiccant can be introduced on the front side of the plate and one or more openings for collecting the liquid desiccant.