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Article: Smoke flow in Chinese kangs
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TitleSmoke flow in Chinese kangs
 
AuthorsZhuang, Z1 2
Li, Y2
Chen, B1
 
KeywordsChinese kang
Elevated kang
Macroscopic model
Smoke backflow
 
Issue Date2009
 
PublisherSage Publications Ltd.. The Journal's web site is located at http://ibe.sagepub.com
 
CitationIndoor And Built Environment, 2009, v. 18 n. 3, p. 219-233 [How to Cite?]
DOI: http://dx.doi.org/10.1177/1420326X09105454
 
AbstractChinese kangs are widely used today, in nearly 85% of rural homes by 175 million people in Northern China. While Chinese kangs are a potentially energy sustainable solution for home heating, existing systems are characterized by their poor energy efficiency and significant concerns about the impact of indoor air pollution in homes caused by smoke backflow or smoke leakages. Existing kang designs are based on the intuition and historical accumulation of past craftsmanship experiences. As the first attempt, a macroscopic thermal-fluid approach is used to model the airflow and heat transfer process of an elevated kang with a focus on smoke flow. This model considers nonlinear interaction of thermal buoyancy force, wind force and heat transfer from kang plates and chimney walls. Five parameter groups are identified for characterizing the kang systems to guide the kang smoke flow design. Our work has explained the so-called smoke backflow phenomenon that can lead to serious indoor air quality problems in rural homes and based on the results, we have provided some design recommendations for avoiding smoke backflowand for enhancing energy efficiency by increasing the heat utilization of the kang body. © SAGE Publications 2009.
 
Descriptionlink_to_OA_fulltext
 
ISSN1420-326X
2012 SCImago Journal Rankings: 0.501
 
DOIhttp://dx.doi.org/10.1177/1420326X09105454
 
ISI Accession Number IDWOS:000266877000004
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 7154/05E
NSFC50729803
Funding Information:

This work was supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. HKU 7154/05E) and NSFC Young Researcher Award (Project No. 50729803) on investigating energy consumption and indoor air quality in rural homes in Northern China. The work is a part of the International Energy Agency Annex 44 project on Integrating Environmentally Responsive Elements in Buildings. Special thanks go to Ms Abigail Watrous of University of Colorado at Boulder, for editorial assistance.

 
ReferencesReferences in Scopus
 
GrantsNonlinear coupling of thermal mass and natural ventilation in buildings
 
DC FieldValue
dc.contributor.authorZhuang, Z
 
dc.contributor.authorLi, Y
 
dc.contributor.authorChen, B
 
dc.date.accessioned2010-10-31T10:57:11Z
 
dc.date.available2010-10-31T10:57:11Z
 
dc.date.issued2009
 
dc.description.abstractChinese kangs are widely used today, in nearly 85% of rural homes by 175 million people in Northern China. While Chinese kangs are a potentially energy sustainable solution for home heating, existing systems are characterized by their poor energy efficiency and significant concerns about the impact of indoor air pollution in homes caused by smoke backflow or smoke leakages. Existing kang designs are based on the intuition and historical accumulation of past craftsmanship experiences. As the first attempt, a macroscopic thermal-fluid approach is used to model the airflow and heat transfer process of an elevated kang with a focus on smoke flow. This model considers nonlinear interaction of thermal buoyancy force, wind force and heat transfer from kang plates and chimney walls. Five parameter groups are identified for characterizing the kang systems to guide the kang smoke flow design. Our work has explained the so-called smoke backflow phenomenon that can lead to serious indoor air quality problems in rural homes and based on the results, we have provided some design recommendations for avoiding smoke backflowand for enhancing energy efficiency by increasing the heat utilization of the kang body. © SAGE Publications 2009.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.descriptionlink_to_OA_fulltext
 
dc.identifier.citationIndoor And Built Environment, 2009, v. 18 n. 3, p. 219-233 [How to Cite?]
DOI: http://dx.doi.org/10.1177/1420326X09105454
 
dc.identifier.doihttp://dx.doi.org/10.1177/1420326X09105454
 
dc.identifier.epage233
 
dc.identifier.hkuros180410
 
dc.identifier.isiWOS:000266877000004
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaHKU 7154/05E
NSFC50729803
Funding Information:

This work was supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. HKU 7154/05E) and NSFC Young Researcher Award (Project No. 50729803) on investigating energy consumption and indoor air quality in rural homes in Northern China. The work is a part of the International Energy Agency Annex 44 project on Integrating Environmentally Responsive Elements in Buildings. Special thanks go to Ms Abigail Watrous of University of Colorado at Boulder, for editorial assistance.

 
dc.identifier.issn1420-326X
2012 SCImago Journal Rankings: 0.501
 
dc.identifier.issue3
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-67649211305
 
dc.identifier.spage219
 
dc.identifier.urihttp://hdl.handle.net/10722/124841
 
dc.identifier.volume18
 
dc.languageeng
 
dc.publisherSage Publications Ltd.. The Journal's web site is located at http://ibe.sagepub.com
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofIndoor and Built Environment
 
dc.relation.projectNonlinear coupling of thermal mass and natural ventilation in buildings
 
dc.relation.referencesReferences in Scopus
 
dc.subjectChinese kang
 
dc.subjectElevated kang
 
dc.subjectMacroscopic model
 
dc.subjectSmoke backflow
 
dc.titleSmoke flow in Chinese kangs
 
dc.typeArticle
 
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Author Affiliations
  1. Dalian University of Technology
  2. The University of Hong Kong