NDLI: Effect of Moisture Transport on Mixed Convection in Vertical Annulus of a Heated Clothed Vertical Wet Cylinder in Uniform Cross Wind

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ghaddar, Nesreen Ghali, Kamel
Copyright Year	2010
Abstract	Ventilation and heat and moisture transport from a vertical clothed wet and heated cylinder subject to uniform cross wind are studied by modeling and experimentation to investigate the effect of wet cylinder conditions and external wind humidity on renewal rate of the air annulus and its temperature. The coupled parabolic momentum, moisture, and heat balance equations including buoyancy are formulated and solved for uniform surface heating and uniformly wetted inner cylinder boundary to predict the air annulus vertical temperature distribution, moisture evaporation rate from the inner surface, total ventilation through the clothing and the top opening, and sensible and latent heat loss for any given environment conditions, clothing permeability and thermal properties, wind speed and annulus geometry. Experiments were performed in a low speed wind tunnel in which a uniformly heated vertical cylinder covered by a wet stretch fabric enclosed by a clothed outer cylinder is placed in uniform cross flow of known temperature and relative humidity. Good agreement was found between the model and the experimental measurements of sensible and latent heat losses, and air annulus temperature profile. A parametric study is performed to study the effect of moisture on sensible and latent heat loss and the induced mixed ventilation for constant heat flux surface condition of the heated clothed cylinder. The effect of adding wet model effect on the axial mass flow rate in vertical annulus does not exceed 3% in comparison with dry cylinder mixed convection at the same total heat flux at ambient conditions of 10°C and 50% relative humidity. For equal heat input to the wet cylinder in comparison to the dry cylinder at ambient conditions of 10°C and 50% relative humidity, the air layer temperature decreased by 1.51°C and 2.62 °C in air layer temperature for permeabilities of 0.05 and 0.25 m/s when compared to air layer temperature for the dry case.
Sponsorship	Heat Transfer Division
Starting Page	215
Ending Page	223
Page Count	9
File Format	PDF
ISBN	9780791849422
DOI	10.1115/IHTC14-22342
e-ISBN	9780791838792
Volume Number	2010 14th International Heat Transfer Conference, Volume 7
Conference Proceedings	2010 14th International Heat Transfer Conference
Language	English
Publisher Date	2010-08-08
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Airflow through porous cylinder Mixed convection in vertical wet annulus Cloth trunk ventilation Ventilation of clothed vertical heated wet cylinder Annulus Ventilation Wind Mixed convection Cylinders
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Mixed Convection Through Vertical Porous Annuli Locally Heated From the Inner Cylinder

Ventilation of Wind-Permeable Clothed Cylinder Subject to Periodic Swinging Motion

Experimental and Theoretical Study of Ventilation and Heat Loss From Isothermally Heated Clothed Vertical Cylinder in Uniform Flow Field

Laminar Mixed Convection in Horizontal Concentric Annuli With Four Porous Blocks Attached on the Outside of the Inner Cylinder

Mixed convection flow through a porous medium in a cylinder of non uniform gap

Effect of Non-uniform Suction or Injection on Mixed Convection Flow Over a Vertical Cylinder Embedded in a Porous Medium

Effect of Inner Wall Rotation on Multicellular Natural Convection Flow in a Vertical Annulus

U-RANS Simulation of Mixed-Convection Around a Finite Wall-Mounted Heated Cylinder Cooled by Cross-Flow

Laminar Mixed Convection of Cold Water in a Vertical Annulus With a Heated Rotating Inner Cylinder

Effect of Moisture Transport on Mixed Convection in Vertical Annulus of a Heated Clothed Vertical Wet Cylinder in Uniform Cross Wind

Similar Documents

Mixed Convection Through Vertical Porous Annuli Locally Heated From the Inner Cylinder

Ventilation of Wind-Permeable Clothed Cylinder Subject to Periodic Swinging Motion

Experimental and Theoretical Study of Ventilation and Heat Loss From Isothermally Heated Clothed Vertical Cylinder in Uniform Flow Field

Laminar Mixed Convection in Horizontal Concentric Annuli With Four Porous Blocks Attached on the Outside of the Inner Cylinder

Mixed convection flow through a porous medium in a cylinder of non uniform gap

Effect of Non-uniform Suction or Injection on Mixed Convection Flow Over a Vertical Cylinder Embedded in a Porous Medium

Effect of Inner Wall Rotation on Multicellular Natural Convection Flow in a Vertical Annulus

U-RANS Simulation of Mixed-Convection Around a Finite Wall-Mounted Heated Cylinder Cooled by Cross-Flow

Laminar Mixed Convection of Cold Water in a Vertical Annulus With a Heated Rotating Inner Cylinder

Effect of Moisture Transport on Mixed Convection in Vertical Annulus of a Heated Clothed Vertical Wet Cylinder in Uniform Cross Wind