NDLI: Flow Boiling in a 1.1 mm Tube With R134A: Experimental Results and Comparison With Model

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Shiferaw, D. Karayiannis, T. G. Kenning, D. B. R.
Copyright Year	2007
Abstract	A detailed comparison of the three-zone evaporation model, proposed by Thome et al. (2004), with experimental heat transfer results of two stainless steel tubes of internal diameter 4.26 mm and 2.01 mm using R134a fluid was presented by Shiferaw et al. (2006). In the current paper the comparison is extended to flow boiling in a 1.1 mm tube using R134a as the working fluid. Other parameters were varied in the range: mass flux 100–600 kg/m2.s; heat flux 16–150 kW/m2 and pressure 6–12 bar. The experimental results demonstrate that the heat transfer coefficient increases with heat flux and system pressure, but does not change with vapour quality when the quality is less than about 50% for low heat and mass flux values. The effect of mass flux is observed to be insignificant. For vapour quality values greater than 50% and at high heat flux values, the heat transfer coefficient does not depend on heat flux and decreases with vapour quality. This could be caused by partial dryout. The three-zone evaporation model predicts the experimental results fairly well, especially at relatively low pressure. However, the partial dryout region is highly over-predicted by the model. The sensitivity of the performance of the model to the three optimized parameters (confined bubble frequency, initial film thickness and end film thickness) and some preliminary investigation relating the critical film thickness for dryout to measured tube roughness are also discussed.
Sponsorship	Nanotechnology Institute
Starting Page	19
Ending Page	27
Page Count	9
File Format	PDF
ISBN	079184272X
DOI	10.1115/ICNMM2007-30038
e-ISBN	0791838005
Volume Number	ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels
Conference Proceedings	ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels
Language	English
Publisher Date	2007-06-18
Publisher Place	Puebla, Mexico
Access Restriction	Subscribed
Subject Keyword	Surface roughness Evaporation Film thickness Boiling Flow (dynamics) Pressure Heat flux Fluids Bubbles Heat Stainless steel Heat transfer coefficients Heat transfer
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	Mr. Siddhartha Mukherjee siddhartha@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	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray 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

Flow boiling in a 1.1 mm tube with R134a: experimental results and comparison with model (2009)

Flow Boiling of R134a and R245fa in a 1.1 mm Diameter Tube

Experimental Study of Flow Boiling Heat Transfer in Mini-Tube

Experimental Study on Flow Boiling Heat Transfer in an Extremely Small Tube

Experimental Investigation and Discussion of Heat Transfer Mechanisms During Flow Boiling in Mini-Channels Using Refrigerant R134a

Flow Boiling Heat Transfer of R123/R134a Mixture in a Micro-Channel

Heat Transfer Mechanisms of Propane Boiling on Horizontal Steel Tubes With Smooth and Enhanced Surfaces

Effect of Operating Pressure on Flow Boiling Heat Transfer in Microchannels

Chapter 5 r134a flow boiling heat transfer in small diameter tubes.

Flow Boiling in a 1.1 mm Tube With R134A: Experimental Results and Comparison With Model

Similar Documents

Flow boiling in a 1.1 mm tube with R134a: experimental results and comparison with model (2009)

Flow Boiling of R134a and R245fa in a 1.1 mm Diameter Tube

Experimental Study of Flow Boiling Heat Transfer in Mini-Tube

Experimental Study on Flow Boiling Heat Transfer in an Extremely Small Tube

Experimental Investigation and Discussion of Heat Transfer Mechanisms During Flow Boiling in Mini-Channels Using Refrigerant R134a

Flow Boiling Heat Transfer of R123/R134a Mixture in a Micro-Channel

Heat Transfer Mechanisms of Propane Boiling on Horizontal Steel Tubes With Smooth and Enhanced Surfaces

Effect of Operating Pressure on Flow Boiling Heat Transfer in Microchannels

Chapter 5 r134a flow boiling heat transfer in small diameter tubes.

Flow Boiling in a 1.1 mm Tube With R134A: Experimental Results and Comparison With Model