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J. Renewable Sustainable Energy 1, 043101 (2009); doi:10.1063/1.3166862 (7 pages)

Optimum sizing of air heating collectors

M. S. Söylemez

Department of Mechanical Engineering, University of Gaziantep, 27310 Gaziantep, Turkey

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(Received 24 September 2008; accepted 9 June 2009; published online 1 July 2009)

A thermoeconomic feasibility analysis is presented yielding a simple algebraic optimization formula for estimating the optimum length of a typical air heating collector per unit depth. A simple economic optimization method is used in the present study by combining it with an integrated overall heat balance method for calculating maximum savings from the solar air heating. An optimum collector length was detected as a result of the present work. The number of payback years and critical length of an air heating collector were also determined by using the present optimization method.

© 2009 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. MATHEMATICAL FORMULATION
  3. RESULTS AND DISCUSSION
  4. SUMMARY
  5. NOMENCLATURE

KEYWORDS and PACS

PACS

  • 89.65.Gh

    Economics; econophysics, financial markets, business and management

  • 88.40.fc

    Modeling and analysis

  • 88.40.me

    Solar heating and cooling systems

  • 88.05.Lg

    Economic issues; sustainability; cost trends

PUBLICATION DATA

ISSN:

1941-7012 (print)  
1941-7012 (online)

  1. M. A. Al-Nimr, S. Kiwan, and A. Al-Alwah, Energy 23, 373 (1998). [Inspec]
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  3. I. Kurtbas and A. Durmus, Renewable Energy 29, 1489 (2004). [Inspec]
  4. H. D. Ammari, Renewable Energy 28, 1597 (2003). [Inspec]
  5. K. S. Ong, Sol. Energy 55, 93 (1995). [Inspec]
  6. S. Youcef-Ali, Renewable Energy 30, 271 (2005). [Inspec]
  7. N. Moummi, S. Yocuef-Ali, A. Moummi, and J. Y. Desmonds, Renewable Energy 29, 2053 (2004). [Inspec]
  8. J. A. Duffie and W. A. Beckman, Solar Engineering of Thermal Processes (Wiley, New York, 1980).
  9. W. F. Stoecker, Design of Thermal Systems, 3rd ed. (Mc Graw-Hill, New York, 1989).

Figures (4) Tables (2)

Figures (click on thumbnails to view enlargements)

FIG.1
Schematics of air heating collector.

FIG.1 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.2
Schematics of an infinitesimal collector element.

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FIG.3
Net savings vs various collector length values.

FIG.3 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.4
Optimum collector length vs various air mass flow rate values.

FIG.4 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

Tables

Table I. Net life cycle savings vs various collector lengths.

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Table II. Optimum length of collector vs various mass flow rates of air collectors.

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