0
RESEARCH PAPERS

Solar Energy Collection With Evacuated Tubes

[+] Author and Article Information
E. Speyer

American Machine & Foundry Co., Springdale, Conn.

J. Eng. Power 87(3), 270-276 (Jul 01, 1965) (7 pages) doi:10.1115/1.3678243 History: Received July 23, 1964; Online January 10, 2012

Abstract

Engineering and economic considerations are given for nontracking solar energy collectors where the absorbing surface is insulated by an evacuated space. Each collector is a long glass tube, about two in. in dia, silvered in the lower portion. The selectively blackened conduit through which liquid flows is suspended within the evacuated tube, passing through the tube wall at only one end. Prototype tubular collectors were built, and tested when evacuated and when air-filled. The measured efficiencies at different temperatures are given, and the data fitted by empirical equations. Costs per tube and per Btu are given together with an indication of applicability to solar air conditioning. Mass production of these collectors will depend on the indicated demand.

Copyright © 1965 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

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