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SDCS Dehumidifier Component Analysis Conclusions

Section 6.3.1 has provided the results and analysis from the SDCS dehumidifier component evaluation. The performance of the SDCS dehumidifier improves with increasing inlet air temperature, relative humidity, volumetric air and desiccant solution flow. However, this is balanced against an increase in desiccant solution dilution and thus a greater required regenerator capacity. A maximum moisture removal rate and dehumidifier cooling output of 0.3203 g s-1 and 954 W have been achieved respectively. The latent (dehumidifier) effectiveness is in the range of 30-40 %, typical of a membrane based HMX. Because the SDCS is tested within the environmental chamber, very little evaporative cooling is achieved (80150 W), and thus little or no air side sensible cooling is provided. However, this is a realistic result and replicates real life operation in a hot and humid climate. The SDCS has demonstrated high COPel values of up to 8.7, demonstrating the potential of the SDCS in the provision of efficient and environmentally benign air conditioning, particularly in high humidity applications.

Dehumidifier performance will need to be balanced by the available regeneration capacity obtainable from the SOFC CHP system during tri-generation system integration. Next, Sect. 6.3.2 presents the results and analysis from the regenerator component investigation.

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