skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spiral-passage heat exchanger

Abstract

A spiral passage chemical converter-heat exchanger is formed by a cross-sectionally rectangular housing containing a pair of rows each containing a plurality of side-by-side passages. The rectangular housing is wound into a spiral with the innermost row forming inlet passages and the outermost row forming outlet passages. Thermal contact exists between inflow passages and outflow passages. The outer end of the spiral is connected with an inlet and an outlet. The inlet joins the innermost row of passages and the outlet joins the outermost row of passages. The inner end of the spiral is capped, with a common wall separating the upper and lower passages slotted so that fluid flows from the inlet passages to the outlet passages. As can be seen when the structure is in a spiral, the inlet passages are between the outlet passages with the outlet passages forming the outer exposed surface of the spiral and the inlet passages forming the surface of the opening through the spiral at the center. A concave sunlight reflector will focus sunlight into the central opening of the spiral thereby heating the fluid in the inlet passages. Since the outlet passages are separated by the inlet passages in the spiralmore » and are in thermal contact therewith, the solar heated outlet fluid will heat the input fluid as it circles the spiral to the outlet passages. Thus, the outlet passages aid in heating the inlet fluid during passage to the inner end of the spiral. The inlet passages may contain a porous catalyst which is prevented from escaping by a suitable structure at each end of the inlet passages for dissociating a fluid for storage of heat for future use.« less

Inventors:
Publication Date:
OSTI Identifier:
5778256
Patent Number(s):
US 4206746
Application Number:
TRN: 82-003595
Assignee:
Secretary of the Navy
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 10 Mar 1978; Other Information: PAT-APPL-876447
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING; HEAT EXCHANGERS; DESIGN; SOLAR REFLECTORS; SPIRAL CONFIGURATION; CATALYSTS; CERAMICS; FLUID FLOW; HEAT TRANSFER FLUIDS; PLATINUM; POROSITY; THERMAL CONDUCTION; CONFIGURATION; ELEMENTS; ENERGY TRANSFER; EQUIPMENT; FLUIDS; HEAT TRANSFER; METALS; PLATINUM METALS; SOLAR CONCENTRATORS; SOLAR EQUIPMENT; TRANSITION ELEMENTS; 141000* - Solar Collectors & Concentrators; 420400 - Engineering- Heat Transfer & Fluid Flow; 140505 - Solar Energy Conversion- Photochemical, Photobiological, & Thermochemical Conversion- (1980-)

Citation Formats

Chubb, T A. Spiral-passage heat exchanger. United States: N. p., 1980. Web.
Chubb, T A. Spiral-passage heat exchanger. United States.
Chubb, T A. Tue . "Spiral-passage heat exchanger". United States.
@article{osti_5778256,
title = {Spiral-passage heat exchanger},
author = {Chubb, T A},
abstractNote = {A spiral passage chemical converter-heat exchanger is formed by a cross-sectionally rectangular housing containing a pair of rows each containing a plurality of side-by-side passages. The rectangular housing is wound into a spiral with the innermost row forming inlet passages and the outermost row forming outlet passages. Thermal contact exists between inflow passages and outflow passages. The outer end of the spiral is connected with an inlet and an outlet. The inlet joins the innermost row of passages and the outlet joins the outermost row of passages. The inner end of the spiral is capped, with a common wall separating the upper and lower passages slotted so that fluid flows from the inlet passages to the outlet passages. As can be seen when the structure is in a spiral, the inlet passages are between the outlet passages with the outlet passages forming the outer exposed surface of the spiral and the inlet passages forming the surface of the opening through the spiral at the center. A concave sunlight reflector will focus sunlight into the central opening of the spiral thereby heating the fluid in the inlet passages. Since the outlet passages are separated by the inlet passages in the spiral and are in thermal contact therewith, the solar heated outlet fluid will heat the input fluid as it circles the spiral to the outlet passages. Thus, the outlet passages aid in heating the inlet fluid during passage to the inner end of the spiral. The inlet passages may contain a porous catalyst which is prevented from escaping by a suitable structure at each end of the inlet passages for dissociating a fluid for storage of heat for future use.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {6}
}