0
TECHNICAL PAPERS

Characteristic Heat Removal Efficiency for Thermosyphon Solar Water Heaters During the System Application Phase

[+] Author and Article Information
J. M. Chang

Department of Mechanical Engineering, Far East College, No. 49, Chung-Hwa Road, Hsin-Shih Town, Tainan County, 744, Taiwan

J. Sol. Energy Eng 126(3), 950-956 (Jul 19, 2004) (7 pages) doi:10.1115/1.1753576 History: Received July 01, 2003; Revised February 01, 2004; Online July 19, 2004
Copyright © 2004 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Experimental testing system configuration employed to evaluate the heat removal efficiency of various thermosyphon systems
Grahic Jump Location
Heat removal patterns of System A for: (a)–(c) presenting the case of different discharge flow rates V̇d at constant Ti−T̄w=14.5°C,20.6°C,26.3°C, respectively and (d) different temperature differences Ti−T̄w at constant discharge flow rate V̇d=10 L/min. (Note that normalized time=testing time/time tf. The term “drop-off point” refers to the value of the data point on the Te−Tw curve at which it quickly drops at least 3% in comparison with the value of its relative data on the Ti−T̄w curve).
Grahic Jump Location
Relationship between heat removal efficiency, (Ti−T̄w) and V̇d for Systems A and B
Grahic Jump Location
Empirical models of heat removal efficiency for: (a) System A with data correlation coefficient Rxy=0.901, (b) System B with data correlation coefficient Rxy=0.889, (c) System C with data correlation coefficient Rxy=0.967 and (d) System D with data correlation coefficient Rxy=0.904
Grahic Jump Location
Relationship between heat removal efficiency and integrated parameter (Ti−T̄w)/V̇d derived from analysis of the experimental data for Systems A, B, C and D. (Note that the characteristic heat removal efficiency, ηR*, is defined as the value of ηR at (Ti−T̄w)/V̇d=2.0)
Grahic Jump Location
Design performance curve for system’s storage tank geometry dimensions to optimize the characteristic heat removal efficiency of a system. (Note that the data correlation coefficient Rxy=0.856)

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