Trane TRG-TRC011-EN manual Absorption Chiller Types

period two

Absorption Chiller Types

notes

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◆Problems with solution stability

◆Increased risk of corrosion problems

◆More expensive pressure vessel design requirements

◆Greater first cost due to added components

◆Larger physical size

Figure 38

While they are presently not available, higher-effect absorption chillers are being studied for commercial use due their potential for higher COPs. Typical COPs for these triple-effect cycles are 1.4 to 1.5. Implementation of these cycles into commercial water chillers, however, includes difficulties such as the following.

νHigher solution temperatures create problems with stability of the absorbent solution and performance additives, as well as additional material corrosion problems.

νIn some cases, higher operating pressures which require high-cost pressure vessel designs.

νGreater first cost due to the need for additional pumps and heat exchangers.

νLarger physical size.

As mentioned earlier, other cycles and fluid combinations are also being studied for commercial use. The focus of this clinic, however, is limited to water chillers that use a lithium bromide-and-water solution.

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