Estimation of Collector Performance Parameters From Daily System Tests

[+] Author and Article Information
N. E. Wijeysundera, M. N. A. Hawlader, K. Y. Foong

Department of Mechanical and Production Engineering, National University of Singapore, 10 Kent Ridge Cresent, Singapore 0511

J. Sol. Energy Eng 118(1), 30-36 (Feb 01, 1996) (7 pages) doi:10.1115/1.2847922 History: Received December 01, 1993; Revised August 01, 1995; Online February 14, 2008


A test procedure to estimate the daily mean values of the linear collector characteristics, FR ,(τα) and FR UL , from the measured variation of the storage tank temperature was investigated. The Levenberg-Marquardt algorithm was used for parameter estimation. Two flat-plate collectors were tested over a period of 11 days each to study the feasibility of the test procedure. The tests were conducted under variable weather conditions and inlet water temperatures. The standard deviation for the daily mean values of FR (τα) and FR UL were about 2.8 percent and 4 percent, respectively. The differences between the daily mean values obtained by the proposed method and the steady-state test values for FR (τα) were about 4 percent to 7 percent, while for FR UL the differences were 9 percent to 13 percent.

Copyright © 1996 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.





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