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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

THERMOSYPHON-BASED FLUE GAS CONDENSATION TO IMPROVE THE PERFORMANCE OF DRY-COOLED POWER PLANTS

Tao He
Department of Mechanical Engineering Stony Brook University, Stony Brook, NY 11794, USA

Wei Zhong
Department of Mechanical Engineering Stony Brook University, Stony Brook, NY 11794, USA

Sean Hardick
Stony Brook University, Stony Brook, NY 11794, U.S.A

Dylan Magee
Stony Brook University, Stony Brook, NY 11794, U.S.A

Tom Butcher
Brookhaven National Laboratory, Upton, NY 11973, U.S.A.

Tim Wagner
United Technology Research Center, East Hartford, CT 06108, USA

Yaroslav Chudnovsky
Gas Technology Institute

Jon P. Longtin
Department of Mechanical Engineering, Stony Brook University, NY, USA; Center for Accelerator Science and Education, Stony Brook University, NY, USA

Abstract

This study presents the design and simulation of an actively-controlled thermosyphon system for condensing water vapor from the flue gas of natural-gas combined-cycle (NGCC) power plants. The condensed water can be used for sub-ambient evaporative cooling and cool storage to improve the plant's performance. This thermosyphon system consists of polymer heat exchangers acting as a falling film evaporator and metal heat exchangers acting as the air-cooled condenser section. Both cross-flow and axial-flow arrangements are investigated for the flue gas relative to the polymer evaporator tubes. These two flow arrangements are discussed under the design considerations of heat and mass transfer performance.

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