New concept of spray saturation tower for micro Humid Air Turbine applications
(2014) Applied Energy — Vol. 130, p. 723-737 (2014)
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- Abstract
- The micro Humid Air Turbine (mHAT) has proven to have the highest potential of all mixed air/water micro Gas Turbines (mGTs). Turning a mGT into a mHAT however requires the installation of a saturation tower. Most common saturation towers use packing material to increase the contact area between compressed air and water. The packing material however causes a pressure drop, which has a severe negative effect on the mGT performance. To limit this pressure drop, we have developed a spray tower without packing that uses nozzles to inject water in the compressed air. In this paper, we propose a design for the spray tower based on 2-phase flow simulations. The two major constraints during the design were minimal pressure loss and tower size. A sensitivity analysis was performed in order to indicate the key parameters to obtain fully saturated air from the tower. Results of simulations showed that using a spray tower reduces the pressure losses when compared to a classic saturation tower. Sensitivity analysis showed that droplet diameter and injected water mass flow rate have the largest effect on the final size of the spray tower. Finally, a cross-current spray tower design was proposed for a Turbec T100. mGT because the sensitivity analysis showed that cross-current droplets injection meets the design constraints best. © 2014 Elsevier Ltd.
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De Paepe, W., Contino, F., Delattin, F., Bram, S., & De Ruyck, J. (2014). New concept of spray saturation tower for micro Humid Air Turbine applications. Applied Energy, 130, 723-737. https://doi.org/10.1016/j.apenergy.2014.03.055 (Original work published 2014)