Feedback | Help | View MyArticles
jres nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Facebook Podcast Flickr Twitter iResearch App

Journal of Renewable and Sustainable Energy / Volume 4 / Issue 2 / REGULAR ARTICLES

J. Renewable Sustainable Energy 4, 023103 (2012); http://dx.doi.org/10.1063/1.3687940 (16 pages)

Performance evaluation and comparison of a novel “retro-fit” heat exchanger and a conventional solar water heater with a single coiled heat exchanger

Dan Nchelatebe Nkwetta1 and Mervyn Smyth2

1Sustainable Building Envelope Centre, Corus Colors, Tata Steel, Shotton Works, Deeside, Flintshire, CH5 2NH, North Wales, United Kingdom
2Centre for Sustainable Technologies, School of the Built Environment, Faculty of Arts, Design and Built Environment, University of Ulster at Jordanstown, United Kingdom

View MapView Map

(Received 11 June 2011; accepted 20 January 2012; published online 13 March 2012)

The performances of solar water heating systems have improved steadily over recent years due to improved component quality and design. Solar water heating systems in Northern Maritime climates, however, are still not viable economically. In order to make a significant impact on the domestic hot water heating market, solar water heaters must be innovative, cost-effective, and adaptable for retro-fit installation. This paper investigates experimentally the performance of a novel heat exchanger (the “Solasyphon”) designed and developed for external connection to an existing traditional single-coil hot water cylinder. The connection of the novel heat exchanger to an existing system reduces the cost of installation as it avoids the need to replace the existing single-coil hot water cylinder with a twin-coil system. However, the connection of this Solasyphon to a solar water heating system has negative effects on heat losses especially at higher temperatures based on the size of the solar collector. The experimentation was carried out under outdoor and indoor control operating conditions. This paper presents the monitored performance of the Solasyphon compared with that of a conventional solar water heater with a coiled heat exchanger and the negative effects regarding the heat losses resulting from the small size of the solar collector especially at high inlet temperatures (greater than 70 °C).

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. DESCRIPTION OF THE SOLASYPHON
  3. DESCRIPTION OF THE OUTDOOR EXPERIMENTAL APPARATUS AND TEST PROGRAM
  4. DESCRIPTION OF THE INDOOR EXPERIMENTAL APPARATUS AND TEST PROGRAM
  5. RESULTS AND ANALYSIS FOR THE OUTDOOR TESTED SOLASYPHON
  6. RESULTS AND ANALYSIS FOR THE INDOOR TESTED DSVCPC WITH THE SOLASYPHON
  7. CONCLUSION

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS, PACS, and IPC

Keywords

heat exchangers, heat losses, maintenance engineering, performance evaluation, solar absorber-convertors, solar heating

PACS

  • 42.79.Ek

    Solar collectors and concentrators

  • 07.20.-n

    Thermal instruments and apparatus

International Patent Classification (IPC)

  • F24J2/00

    Use of solar heat, e.g. solar heat collectors

  • F28C

    Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media come into direct contact without chemical interaction

  • F28D

    Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact; Heat storage plants or apparatus in general

  • F28F

    Details of heat-exchange or heat-transfer apparatus, of general application

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3687940

PUBLICATION DATA

ISSN

1941-7012 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.

    References

    I. Michaelides, P. Eleftheriou, G. A. Siamas, G. Roditis, and P. Kyriacou, J. Renewable Sustainable Energy 3, 033103 (2011)JRSEBH000003000003033103000001.


Figures (17)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Performance evaluation and comparison of a novel “retro-fit” heat exchanger and a conventional solar water heater with a single coiled heat exchanger
Go to AIP Home   © AIP Publishing LLC
Rights and Permissions  |   Disclaimer   |   Subscriptions and Pricing
close