IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C1 Report, 31 October 2010
Figure 18: Schematic of an open-absorption system. Source: Mesquita [83].
Collier [85] analyzed what is commonly referred to as the open-absorption refrigeration
system. In such a system, the closed desorber from a conventional absorption system is
substituted for an open one, in this case an open solar collector. The author used a solution
of LiCl-H2O, with water being the refrigerant. Since the system is open, water is spent in the
desorber/collector and has to be reintroduced into the system in the evaporator. Figure 18
presents a schematic of such a system. Lowenstein et al. [86] suggested an LDS with a
closed boiler as the desorber/regenerator. Such a system, represented in Figure 19, could
also be classified as an open-absorption system. One could argue that such a system
represents more closely the definition of open-absorption, since the absorption is open and
the desorption is closed.
Figure 19: Schematic of a liquid-desiccant system with a closed desorber.
Source: Mesquita [83]
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