A heat pipe heat recovery heat exchanger for a mini-drier
Date
2006
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Energy Research Centre, University of Cape Town
Abstract
This paper considers the thermal design and the
experimental testing of a heat pipe (thermosyphon)
heat exchanger for a relatively small commercially
available mini-drier. The purpose of the heat
exchanger is to recover heat from the moist waste
air stream to preheat the fresh incoming air. The
working fluid used was R134a and the correlations
are given for the evaporator and condenser inside
heat transfer coefficients as well as for the maximum
heat transfer rate. The theoretical model and computer
simulation program used for the thermal
design calculations are described. The validity of the
as-designed and manufactured heat exchanger coupled
to the drier is experimentally verified. The theoretical
model accurately predicted the thermal performance
and a significant energy savings and a
reasonable payback period was achieved.
Description
CITATION: Meyer, A. & Dobson, R. T. 2006. A heat pipe heat recovery heat exchanger for a mini-drier. Journal of Energy in Southern Africa 17(1):50–57, doi:10.17159/2413-3051/2006/v17i1a3364.
The original publication is available at https://journals.assaf.org.za/index.php/jesa
The original publication is available at https://journals.assaf.org.za/index.php/jesa
Keywords
Heat exchangers, Heat pipes
Citation
Meyer, A. & Dobson, R. T. 2006. A heat pipe heat recovery heat exchanger for a mini-drier. Journal of Energy in Southern Africa 17(1):50–57, doi:10.17159/2413-3051/2006/v17i1a3364.