Method and apparatus for improving heat transfer in a fluidized bed
Abstract
An apparatus contains a fluidized bed that includes particles of different triboelectrical types, each particle type acquiring an opposite polarity upon contact. The contact may occur between particles of the two types or between particles of etiher type and structure or fluid present in the apparatus. A fluidizing gas flow is passed through the particles to produce the fluidized bed. Immersed within the bed are electrodes. An alternating EMF source connected to the electrodes applies an alternating electric field across the fluidized bed to cause particles of the first type to move relative to particles of the second type and relative to the gas flow. In a heat exchanger incorporating the apparatus, the electrodes are conduits conveying a fluid to be heated. The two particle types alternately contact each conduit to transfer heat from a hot gas flow to the second fluid within the conduit.
- Inventors:
-
- Richland, WA
- Issue Date:
- Research Org.:
- Battelle Memorial Institute, Columbus, OH (United States)
- OSTI Identifier:
- 867228
- Patent Number(s):
- 4890667
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28F - DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
F - MECHANICAL ENGINEERING F28 - HEAT EXCHANGE IN GENERAL F28D - HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; improving; heat; transfer; fluidized; bed; contains; particles; triboelectrical; types; particle; type; acquiring; opposite; polarity; contact; occur; etiher; structure; fluid; fluidizing; gas; flow; passed; produce; immersed; electrodes; alternating; emf; source; connected; applies; electric; field; move; relative; exchanger; incorporating; conduits; conveying; heated; alternately; conduit; hot; fluidizing gas; source connected; opposite polarity; gas flow; electric field; heat exchange; fluidized bed; heat exchanger; heat transfer; hot gas; transfer heat; alternating electric; move relative; apparatus contains; particle type; /165/
Citation Formats
Lessor, Delbert L, and Robertus, Robert J. Method and apparatus for improving heat transfer in a fluidized bed. United States: N. p., 1990.
Web.
Lessor, Delbert L, & Robertus, Robert J. Method and apparatus for improving heat transfer in a fluidized bed. United States.
Lessor, Delbert L, and Robertus, Robert J. Mon .
"Method and apparatus for improving heat transfer in a fluidized bed". United States. https://www.osti.gov/servlets/purl/867228.
@article{osti_867228,
title = {Method and apparatus for improving heat transfer in a fluidized bed},
author = {Lessor, Delbert L and Robertus, Robert J},
abstractNote = {An apparatus contains a fluidized bed that includes particles of different triboelectrical types, each particle type acquiring an opposite polarity upon contact. The contact may occur between particles of the two types or between particles of etiher type and structure or fluid present in the apparatus. A fluidizing gas flow is passed through the particles to produce the fluidized bed. Immersed within the bed are electrodes. An alternating EMF source connected to the electrodes applies an alternating electric field across the fluidized bed to cause particles of the first type to move relative to particles of the second type and relative to the gas flow. In a heat exchanger incorporating the apparatus, the electrodes are conduits conveying a fluid to be heated. The two particle types alternately contact each conduit to transfer heat from a hot gas flow to the second fluid within the conduit.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}