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Title: Glass heat pipe evacuated tube solar collector

Abstract

A glass heat pipe is adapted for use as a solar energy absorber in an evacuated tube solar collector and for transferring the absorbed solar energy to a working fluid medium or heat sink for storage or practical use. A capillary wick is formed of granular glass particles fused together by heat on the inside surface of the heat pipe with a water glass binder solution to enhance capillary drive distribution of the thermal transfer fluid in the heat pipe throughout the entire inside surface of the evaporator portion of the heat pipe. Selective coatings are used on the heat pipe surface to maximize solar absorption and minimize energy radiation, and the glass wick can alternatively be fabricated with granular particles of black glass or obsidian.

Inventors:
 [1];  [2]
  1. (Lakewood, CO)
  2. (Tracy, CA)
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
OSTI Identifier:
865174
Patent Number(s):
4474170
Assignee:
United States of America as represented by United States (Washington, DC) NREL
DOE Contract Number:  
EG-77-C-01-4042
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
glass; heat; pipe; evacuated; tube; solar; collector; adapted; energy; absorber; transferring; absorbed; fluid; medium; sink; storage; practical; capillary; wick; formed; granular; particles; fused; inside; surface; water; binder; solution; enhance; drive; distribution; thermal; transfer; throughout; entire; evaporator; portion; selective; coatings; maximize; absorption; minimize; radiation; alternatively; fabricated; black; obsidian; energy radiation; thermal transfer; transfer fluid; energy absorber; solar collector; inside surface; heat sink; heat pipe; solar energy; fluid medium; glass particles; solar absorption; evacuated tube; tube solar; glass heat; /126/118/427/

Citation Formats

McConnell, Robert D., and Vansant, James H. Glass heat pipe evacuated tube solar collector. United States: N. p., 1984. Web.
McConnell, Robert D., & Vansant, James H. Glass heat pipe evacuated tube solar collector. United States.
McConnell, Robert D., and Vansant, James H. Sun . "Glass heat pipe evacuated tube solar collector". United States. https://www.osti.gov/servlets/purl/865174.
@article{osti_865174,
title = {Glass heat pipe evacuated tube solar collector},
author = {McConnell, Robert D. and Vansant, James H.},
abstractNote = {A glass heat pipe is adapted for use as a solar energy absorber in an evacuated tube solar collector and for transferring the absorbed solar energy to a working fluid medium or heat sink for storage or practical use. A capillary wick is formed of granular glass particles fused together by heat on the inside surface of the heat pipe with a water glass binder solution to enhance capillary drive distribution of the thermal transfer fluid in the heat pipe throughout the entire inside surface of the evaporator portion of the heat pipe. Selective coatings are used on the heat pipe surface to maximize solar absorption and minimize energy radiation, and the glass wick can alternatively be fabricated with granular particles of black glass or obsidian.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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