Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
Heat Transfer Research

Impact factor: 0.868

ISSN Print: 1064-2285
ISSN Online: 2162-6561

Volumes:
Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.v40.i5.80
pages 455-472

Experimental Research of Heat Transfer from an In-Line Tube Bundle to a Vertical Foam Flow

Jonas Gylys
Department of Thermal and Nuclear Energy, Kaunas University of Technology, K.Donelaièio str. 20, LT-44239 Kaunas, Lithuania
Tadas Zdankus
Energy Technology Institute, Kaunas University of Technology, K. Donelaicio 20-212 LK, LT-44239 Kaunas, Lithuania
Irena Gabrielaitiene
Energy Technology Institute, Kaunas University of Technology, Lithuania
Stasys Sinkunas
Department of Thermal and Nuclear Energy, Kaunas University of Technology, Donelaicio 20, LT-44239 Kaunas, Lithuania

ABSTRACT

Development of heat exchangers with low consumption of primary energy resources and the enhanced heat transfer rates is the aim of our investigation. There are some ways of heat exchangers development. Usage of advanced coolants with the most suitable characteristics is one of the best and promising ways. We estimated that usage of aqueous foam as a coolant results in a relatively large heat transfer rate due to a small mass flow rate of such coolant. The main task of this work was to experimentally investigate the intensity of heat transfer from an in-line tube bundle to vertical upward and downward (after a 180-deg turning) foam flows. The influence of the foam flow parameters, such as flow velocity, direction of flow, volumetric void fraction of foam, and liquid drainage from foam, on the in-line tube bundle heat transfer intensity was determined. The influence of the tube position in the bundle on heat transfer intensity was investigated as well. The results of our experimental investigation are presented and analyzed in this paper. The results of investigation could enable one to create a modern and economic heat exchanger with simple and safe operation using a two-phase foam flow. It must be a compact, light heat exchanger with a relatively large intensity of heat transfer.