The Effect of Wind Screens on the Performance of an Induced Draft Air-Cooled Condenser Under Windless and Windy ConditionsSource: Journal of Thermal Science and Engineering Applications:;2022:;volume( 015 ):;issue: 001::page 11003-1DOI: 10.1115/1.4055331Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Wind generally reduces the thermal effectiveness of air-cooled condensers (ACCs). Therefore, this study investigates wind screens as a means to improve the performance of a 20-fan induced draft ACC under windy conditions. Two wind-screen configurations are tested: walls extending above the fan platform (termed wind walls) and walls extending below the fan platform (termed wind skirts). The performance of this five-by-four ACC is evaluated using the open-source computational fluid dynamics code, OpenFOAM. The performance is first analyzed under windless operating conditions and then when the ACC is subjected to wind speeds of 3, 6, and 9 m/s directed along the shorter and longer axes of the ACC. Under windless conditions, wind walls increase the ACC’s thermal effectiveness by 1.0%. Wind skirts, however, reduce the effectiveness by 1.8%. Depending on the wind speed and direction, wind walls increase the mean thermal effectiveness of the ACC by 0.3–3.9% under windy conditions. Wind skirts, on the other hand, are only beneficial at higher wind speeds: At 3 m/s, the effectiveness declines by 1.4–2.1%; at 6 m/s, the change in effectiveness ranges from −0.4% to 2.2%; and at 9 m/s, the effectiveness increases by 2.4–3.8%. Wind walls are therefore considered more effective than wind skirts for the tested range of wind speeds.
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contributor author | Bekker, G. M. | |
contributor author | Meyer, C. J. | |
contributor author | van der Spuy, S. J. | |
date accessioned | 2023-08-16T18:05:25Z | |
date available | 2023-08-16T18:05:25Z | |
date copyright | 9/22/2022 12:00:00 AM | |
date issued | 2022 | |
identifier issn | 1948-5085 | |
identifier other | tsea_15_1_011003.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4291385 | |
description abstract | Wind generally reduces the thermal effectiveness of air-cooled condensers (ACCs). Therefore, this study investigates wind screens as a means to improve the performance of a 20-fan induced draft ACC under windy conditions. Two wind-screen configurations are tested: walls extending above the fan platform (termed wind walls) and walls extending below the fan platform (termed wind skirts). The performance of this five-by-four ACC is evaluated using the open-source computational fluid dynamics code, OpenFOAM. The performance is first analyzed under windless operating conditions and then when the ACC is subjected to wind speeds of 3, 6, and 9 m/s directed along the shorter and longer axes of the ACC. Under windless conditions, wind walls increase the ACC’s thermal effectiveness by 1.0%. Wind skirts, however, reduce the effectiveness by 1.8%. Depending on the wind speed and direction, wind walls increase the mean thermal effectiveness of the ACC by 0.3–3.9% under windy conditions. Wind skirts, on the other hand, are only beneficial at higher wind speeds: At 3 m/s, the effectiveness declines by 1.4–2.1%; at 6 m/s, the change in effectiveness ranges from −0.4% to 2.2%; and at 9 m/s, the effectiveness increases by 2.4–3.8%. Wind walls are therefore considered more effective than wind skirts for the tested range of wind speeds. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | The Effect of Wind Screens on the Performance of an Induced Draft Air-Cooled Condenser Under Windless and Windy Conditions | |
type | Journal Paper | |
journal volume | 15 | |
journal issue | 1 | |
journal title | Journal of Thermal Science and Engineering Applications | |
identifier doi | 10.1115/1.4055331 | |
journal fristpage | 11003-1 | |
journal lastpage | 11003-9 | |
page | 9 | |
tree | Journal of Thermal Science and Engineering Applications:;2022:;volume( 015 ):;issue: 001 | |
contenttype | Fulltext |