SDCS Regenerator Desiccant Solution Volumetric Flow Effect
Figure 6.12 shows the effect of volumetric desiccant flow on regenerator performance. The volumetric desiccant flow range studied was 1.5-3.5 L min-1. Figure 6.12a shows that as the volumetric desiccant flow is increased, moisture addition rate and latent effectiveness increases from 0.08311 to 0.3442 g s-1 and 15.73 to 39.46 %, respectively. Figure 6.12b shows that as the volumetric desiccant flow increases, regenerator thermal input and the water temperature difference increases from 708.3 to 1294 W and 5.08 to 9.27 °C respectively. As the desiccant solution volumetric flow increases, the solution capacity for moisture de-sorption increases. As a result elevated regenerator performance is observed with increased desiccant solution volumetric flow. However, this is balanced against an increase
Fig. 6.12 SDCS regenerator performance with desiccant volumetric flow in the regenerator thermal input as the volumetric flow increases and a higher water temperature difference across the regenerator plate heat exchanger.
Selection of a suitable desiccant solution volumetric flow in the regenerator, particularly for effective tri-generation system integration, is dependent upon achieving sufficient wetting of the membrane HMX, balancing of the moisture addition with the moisture removal in the dehumidifier, whilst matching the regenerator thermal requirement and water temperature difference with the SOFC CHP systems thermal input.