IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C1 Report, 31 October 2010
Figure 22: Parallel-plate, internally-cooled/heated absorber/regenerator, Krause et al. [116]
Different techniques, [117] Jaradat et al. and Hubliz [118], have been presented in order to
introduce the liquid desiccant into the plates, the uneven horizontal distribution of the liquid
desiccant as it enters the generator is undesirable because it reduces the effective area of
contact between the liquid desiccant and air and thus decreases the mass transfer and heat
exchange between the liquid and vapour. To ensure proper operation of the generator, it is
also important to ensure that the ratio of liquid to vapour is constant over the cross-section of
the plates. For this reason, it is important to have an even distribution of liquid as it enters the
heat and mass exchanger. Figures 23 and 24 show different distribution techniques of the
liquid desiccant over the heat and mass transfer plates.
Figure 23: Schematic diagrams of a liquid desiccant distributor; perforated pipes
concept: Jaradat et al. [117]
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