New concept of spray saturation tower for micro Humid Air Turbine applications
W. De Paepe,
F. Contino,
F. Delattin,
S. Bram and
J. De Ruyck
Applied Energy, 2014, vol. 130, issue C, 723-737
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 T100mGT because the sensitivity analysis showed that cross-current droplets injection meets the design constraints best.
Keywords: micro Gas Turbine; micro Humid Air Turbine; Saturation tower; Spray tower; 2-Phase flow (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (12)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:130:y:2014:i:c:p:723-737
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DOI: 10.1016/j.apenergy.2014.03.055
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