Advanced Cooling Technologies (2)

Wednesday August 28, 2019 from 13:30 to 15:10

Room: 518ab

TS-317.2 Capacity and pressure drop in a large, flattened-tube air-cooled condenser for power plants

William A Davies III, United States

University of Illinois at Urbana-Champaign

Abstract

Capacity and pressure drop in a large, flattened-tube air-cooled condenser for power plants

William Davies1, Pega Hrnjak1,2.

1University of Illinois at Urbana-Champaign, Urbana, United States; 2Creative Thermal Solutions, Inc, Urbana, United States

Heat transfer and pressure drop during steam condensation are determined experimentally in a large, flattened-tube air-cooled condenser for power plants.

The steel tube is 5.7 m long, with an elongated-slot cross section with inner dimensions of 216 x 16 mm. Cooling air is provided by 48 fans of 120 mm diameter, in order to test varying air flow rates and velocity profiles. Tube inclination angle is varied from 0 – 50o downwards, and condensation pressure is varied from 40 – 105 kPaa.

Pressure drop is measured by difference in inlet and outlet pressure, as well as by change in pressure in 2.85 m lengths along the tube. Capacity is measured on the air and steam sides by flow rate and change in enthalpy.

Pressure drop is found to increase as condensation pressure decreases, and decrease as inclination increases. Capacity is not effected by condensation pressure, and increases as inclination increases.

© 2023 ICR 2019