Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance

Air cooling performance and water spray characteristics are experimentally evaluated to obtain the basic knowledge for the suction air cooling of power plant. Novel optical measurement technique is proposed for measuring spatial number density of water droplet and water quantity in the air flow. The...

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Autores principales:	Tsuneaki ISHIMA, Asuka TAKATSUKI, Takahiro MIYAOKA, Katsuhiko SUGITA, Shuichi OMORI, Shuichi UMEZAWA, Hisanobu KAWASHIMA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	spray property cooling suction air phase doppler anemometer cooling efficiency lambert-beer law Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/f0cb0be70907474ab0a9cdfd28940552
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spelling	oai:doaj.org-article:f0cb0be70907474ab0a9cdfd289405522021-11-29T05:59:26ZWater spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance2187-974510.1299/mej.20-00115https://doaj.org/article/f0cb0be70907474ab0a9cdfd289405522020-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/4/7_20-00115/_pdf/-char/enhttps://doaj.org/toc/2187-9745Air cooling performance and water spray characteristics are experimentally evaluated to obtain the basic knowledge for the suction air cooling of power plant. Novel optical measurement technique is proposed for measuring spatial number density of water droplet and water quantity in the air flow. The technique is based on Lambert-Beer law. An attenuation rate of the power of a laser beam passing through the mist flow is measured and the number of droplets is evaluated. Characteristics of the water spray are also evaluated by a phase Doppler anemometer (PDA). The data are compared with cooling performance. All experiments are tested in a wind tunnel with 1m x 1m square shape and 2 m in length. Mean velocity of main flow is set at 2 m/s, temperature at inlet of wind tunnel is set at 33 degree Celsius. Humidity of the inlet air is varied from 60 % to 90 %. The results show that the cooling efficiency by the water spray is depended on the water droplet diameter and humidity. The PDA data and the cooling efficiency are well correlated. The proposed method can present the data related with the droplet number and quantity.Tsuneaki ISHIMAAsuka TAKATSUKITakahiro MIYAOKAKatsuhiko SUGITAShuichi OMORIShuichi UMEZAWAHisanobu KAWASHIMAThe Japan Society of Mechanical Engineersarticlespray propertycooling suction airphase doppler anemometercooling efficiencylambert-beer lawMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 4, Pp 20-00115-20-00115 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	spray property cooling suction air phase doppler anemometer cooling efficiency lambert-beer law Mechanical engineering and machinery TJ1-1570
spellingShingle	spray property cooling suction air phase doppler anemometer cooling efficiency lambert-beer law Mechanical engineering and machinery TJ1-1570 Tsuneaki ISHIMA Asuka TAKATSUKI Takahiro MIYAOKA Katsuhiko SUGITA Shuichi OMORI Shuichi UMEZAWA Hisanobu KAWASHIMA Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
description	Air cooling performance and water spray characteristics are experimentally evaluated to obtain the basic knowledge for the suction air cooling of power plant. Novel optical measurement technique is proposed for measuring spatial number density of water droplet and water quantity in the air flow. The technique is based on Lambert-Beer law. An attenuation rate of the power of a laser beam passing through the mist flow is measured and the number of droplets is evaluated. Characteristics of the water spray are also evaluated by a phase Doppler anemometer (PDA). The data are compared with cooling performance. All experiments are tested in a wind tunnel with 1m x 1m square shape and 2 m in length. Mean velocity of main flow is set at 2 m/s, temperature at inlet of wind tunnel is set at 33 degree Celsius. Humidity of the inlet air is varied from 60 % to 90 %. The results show that the cooling efficiency by the water spray is depended on the water droplet diameter and humidity. The PDA data and the cooling efficiency are well correlated. The proposed method can present the data related with the droplet number and quantity.
format	article
author	Tsuneaki ISHIMA Asuka TAKATSUKI Takahiro MIYAOKA Katsuhiko SUGITA Shuichi OMORI Shuichi UMEZAWA Hisanobu KAWASHIMA
author_facet	Tsuneaki ISHIMA Asuka TAKATSUKI Takahiro MIYAOKA Katsuhiko SUGITA Shuichi OMORI Shuichi UMEZAWA Hisanobu KAWASHIMA
author_sort	Tsuneaki ISHIMA
title	Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
title_short	Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
title_full	Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
title_fullStr	Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
title_full_unstemmed	Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
title_sort	water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/f0cb0be70907474ab0a9cdfd28940552
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Water spray spatial distribution by novel optical measurement for cooling suction air of gas turbine and its influence on cooling performance

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