Novel dilution sampling method for gas analysis with a low sampling rate

The characterization of the product gas of flames is important not only in the design of combustors but also to provide a fundamental understanding of the phenomenon of combustion. To prevent the disturbance of the flow field during gas sampling, the flow rate of the sampled gas must be kept low. Ho...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Akihiro HAYAKAWA, Yuta HIRANO, Akinori ICHIKAWA, Keishi MATSUO, Taku KUDO, Hideaki KOBAYASHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	gas analysis low flow rate sampling dilution uncertainty analysis dilution ratio Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/13ca6249b912471db70f1535251d03dd
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:13ca6249b912471db70f1535251d03dd
record_format	dspace
spelling	oai:doaj.org-article:13ca6249b912471db70f1535251d03dd2021-11-29T05:53:24ZNovel dilution sampling method for gas analysis with a low sampling rate2187-974510.1299/mej.19-00193https://doaj.org/article/13ca6249b912471db70f1535251d03dd2020-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/2/7_19-00193/_pdf/-char/enhttps://doaj.org/toc/2187-9745The characterization of the product gas of flames is important not only in the design of combustors but also to provide a fundamental understanding of the phenomenon of combustion. To prevent the disturbance of the flow field during gas sampling, the flow rate of the sampled gas must be kept low. However, some gas analyzers require a relatively large flow rate of several liters per minute for gas sampling to increase the response of the gas analysis. In this study, to enable analysis with a low net sampling rate, a method for the dilution of the sampled gas was developed. Although a dilution sampling method has already been proposed, it is difficult to measure the species of interest with this existing method when a tracer species is included in the object mixture. To address this problem, the newly proposed dilution sampling method is appropriate for object gases containing tracer species. In the proposed dilution sampling method, sampling is carried out twice using two dilution gases with different mole fractions of the tracer species. The mole fraction of the target species can be then calculated by solving simultaneous equations. Uncertainty analysis was also conducted for this method, and demonstrations of the dilution sampling method were successfully carried out. In addition, it is suggested that the selection of the dilution gas, i.e., the mole fraction of the tracer species in the dilution gas, is important to reduce the experimental uncertainty in the dilution sampling method.Akihiro HAYAKAWAYuta HIRANOAkinori ICHIKAWAKeishi MATSUOTaku KUDOHideaki KOBAYASHIThe Japan Society of Mechanical Engineersarticlegas analysislow flow rate samplingdilutionuncertainty analysisdilution ratioMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 2, Pp 19-00193-19-00193 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	gas analysis low flow rate sampling dilution uncertainty analysis dilution ratio Mechanical engineering and machinery TJ1-1570
spellingShingle	gas analysis low flow rate sampling dilution uncertainty analysis dilution ratio Mechanical engineering and machinery TJ1-1570 Akihiro HAYAKAWA Yuta HIRANO Akinori ICHIKAWA Keishi MATSUO Taku KUDO Hideaki KOBAYASHI Novel dilution sampling method for gas analysis with a low sampling rate
description	The characterization of the product gas of flames is important not only in the design of combustors but also to provide a fundamental understanding of the phenomenon of combustion. To prevent the disturbance of the flow field during gas sampling, the flow rate of the sampled gas must be kept low. However, some gas analyzers require a relatively large flow rate of several liters per minute for gas sampling to increase the response of the gas analysis. In this study, to enable analysis with a low net sampling rate, a method for the dilution of the sampled gas was developed. Although a dilution sampling method has already been proposed, it is difficult to measure the species of interest with this existing method when a tracer species is included in the object mixture. To address this problem, the newly proposed dilution sampling method is appropriate for object gases containing tracer species. In the proposed dilution sampling method, sampling is carried out twice using two dilution gases with different mole fractions of the tracer species. The mole fraction of the target species can be then calculated by solving simultaneous equations. Uncertainty analysis was also conducted for this method, and demonstrations of the dilution sampling method were successfully carried out. In addition, it is suggested that the selection of the dilution gas, i.e., the mole fraction of the tracer species in the dilution gas, is important to reduce the experimental uncertainty in the dilution sampling method.
format	article
author	Akihiro HAYAKAWA Yuta HIRANO Akinori ICHIKAWA Keishi MATSUO Taku KUDO Hideaki KOBAYASHI
author_facet	Akihiro HAYAKAWA Yuta HIRANO Akinori ICHIKAWA Keishi MATSUO Taku KUDO Hideaki KOBAYASHI
author_sort	Akihiro HAYAKAWA
title	Novel dilution sampling method for gas analysis with a low sampling rate
title_short	Novel dilution sampling method for gas analysis with a low sampling rate
title_full	Novel dilution sampling method for gas analysis with a low sampling rate
title_fullStr	Novel dilution sampling method for gas analysis with a low sampling rate
title_full_unstemmed	Novel dilution sampling method for gas analysis with a low sampling rate
title_sort	novel dilution sampling method for gas analysis with a low sampling rate
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/13ca6249b912471db70f1535251d03dd
work_keys_str_mv	AT akihirohayakawa noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate AT yutahirano noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate AT akinoriichikawa noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate AT keishimatsuo noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate AT takukudo noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate AT hideakikobayashi noveldilutionsamplingmethodforgasanalysiswithalowsamplingrate
_version_	1718407570269405184

Novel dilution sampling method for gas analysis with a low sampling rate

Ejemplares similares