Heat and Mass Exchangers for Compact and High Performance Absorption Cooling Systems

Technology #15794

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Saeed Moghaddam
Mehdi Mortazavi
Sajjad Bigham
Managed By
Richard Croley
Assistant Director 352-392-8929
Patent Protection
PCT Patent Application WO 2017/053955

Design Is More Compact, Less Expensive, Users Fewer Components and Performs Better than Available Units

This heat and mass exchanger for absorption cycles is an order of magnitude smaller and lighter than available units. The exchanger, in plate-and-frame configuration with surface structures that substantially enhance heat and mass transport, could transform absorption systems into high-performance, inexpensive, and robust systems. Absorption systems have traditionally been utilized in large-scale applications, particularly in cases where low-grade heat is available, but these systems are not economically competitive for small-scale applications due to their initial high cost. The breakthroughs achieved at the University of Florida now make absorption systems a viable alternative to the vapor compression cycles for small-scale applications.


Absorber design for more compact, more efficient, and less expensive absorption refrigeration systems


  • Offers compact design, broadening absorption refrigeration system uses to small scale applications
  • Reduces initial cost, increasing competitiveness
  • Increases thermal efficiency of absorption refrigeration systems, lowering energy consumption and operation costs


This absorber design involves surface structures and flow configurations that promote continuous interruption of the thermal and concentration boundary layers and flow mixing of the absorbent solution, resulting in substantial enhancement of the absorption rate. Unlike conventional absorption systems, the absorption rate linearly increases with the absorbent velocity.