0
Research Papers

Experimental Investigation on a Rotary Regenerator Operating at Low Temperatures

[+] Author and Article Information
A. A. Rabah1

Department of Chemical Engineering, University of Khartoum, P.O. Box 321, Khartoum, Sudanrabahss@hotmail.com

A. Fekete, S. Kabelac

Institut für Thermodynamik, Helmut-Schmidt Universität, Universität der Bundeswehr Hamburg, Holstenhofweg 85, 22039 Hamburg, Germany

1

Dr.-Ing. Rabah is an Alexander von Humboldt Stiftung Research Fellow at Institut für Thermodynamik, Helmut-Schmidt Universität, Universität der Bundeswehr-Hamburg, Holstenhofweg 85, 22039 Hamburg.

J. Thermal Sci. Eng. Appl 1(4), 041004 (May 19, 2010) (9 pages) doi:10.1115/1.4001543 History: Received August 22, 2009; Revised February 24, 2010; Published May 19, 2010; Online May 19, 2010

This work investigated the operation conditions of a rotary regenerator operating at low regeneration temperatures, which is widely used in solar desiccant air conditioning systems. A rigorous experimental rig that facilitates the measurement of axial, radial, and angular airflow temperature distribution is used. The measurements covered balanced flow at a wide range of rotational speeds (0–24 rpm), regeneration temperatures (4070°C), and airflow rates (160–530 kg/h). The influences of those parameters on the rotary regenerator effectiveness are presented. The results revealed that the critical effectiveness occurs at 5 rpm (equivalent to 4Cr13). This is lower than that for rotary regenerators operating at high regeneration temperatures and airflow rates. The results also concluded that the Kays and London correlation is sufficient for rotary regenerators operating at low regeneration temperatures. It predicted the experimental data with an average absolute percent deviation of 6.34.

FIGURES IN THIS ARTICLE
<>
Copyright © 2009 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Solar desiccant air conditioning

Grahic Jump Location
Figure 2

Regenerator configuration: (a) face of the wheel and (b) tube cross section

Grahic Jump Location
Figure 3

Schematic of experimental setup

Grahic Jump Location
Figure 4

Temperature measurement grid

Grahic Jump Location
Figure 5

Seal location and leakage directions

Grahic Jump Location
Figure 6

Radial leakage paths

Grahic Jump Location
Figure 7

Radial variation of the outlet airflow temperatures (Ṁ=528 kg/h and regeneration temperature of 40°C)

Grahic Jump Location
Figure 8

Angular variation of exit airflow temperatures

Grahic Jump Location
Figure 9

Effectiveness as a function of rotational speed and regeneration temperature

Grahic Jump Location
Figure 10

Influence of mass flow rate on effectiveness

Grahic Jump Location
Figure 11

Kays and London (3) and Worsøe-Schmidt (5) correction factors

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In