Acoustically enhanced heat exchange and drying apparatus
Abstract
A heat transfer drying apparatus includes an acoustically augmented heat transfer chamber for receiving material to be dried. The chamber includes a first heat transfer gas inlet, a second heat transfer gas inlet, a material inlet, and a gas outlet which also serves as a dried material and gas outlet. A non-pulsing first heat transfer gas source provides a first drying gas to the acoustically augmented heat transfer chamber through the first heat transfer gas inlet. A valveless, continuous second heat transfer gas source provides a second drying gas to the acoustically augmented heat transfer chamber through the second heat transfer gas inlet. The second drying gas also generates acoustic waves which bring about acoustical coupling with the gases in the acoustically augmented heat transfer chamber. The second drying gas itself oscillates at an acoustic frequency of approximately 180 Hz due to fluid mechanical motion in the gas. The oscillations of the second heat transfer gas coupled to the first heat transfer gas in the acoustically augmented heat transfer chamber enhance heat and mass transfer by convection within the chamber. 3 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- OSTI Identifier:
- 6742338
- Patent Number(s):
- 6071953
- Assignee:
- SNL; ERA-14-001313; EDB-88-185753
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07D - HETEROCYCLIC COMPOUNDS
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; DRYERS; DESIGN; HEAT EXCHANGERS; HEAT TRANSFER; ACOUSTICS; EXPERIMENTAL DATA; INVENTIONS; MOISTURE; PARTICULATES; DATA; ENERGY TRANSFER; INFORMATION; NUMERICAL DATA; PARTICLES; 420400* - Engineering- Heat Transfer & Fluid Flow
Citation Formats
Bramlette, T T, and Keller, J O. Acoustically enhanced heat exchange and drying apparatus. United States: N. p., 1987.
Web.
Bramlette, T T, & Keller, J O. Acoustically enhanced heat exchange and drying apparatus. United States.
Bramlette, T T, and Keller, J O. Fri .
"Acoustically enhanced heat exchange and drying apparatus". United States.
@article{osti_6742338,
title = {Acoustically enhanced heat exchange and drying apparatus},
author = {Bramlette, T T and Keller, J O},
abstractNote = {A heat transfer drying apparatus includes an acoustically augmented heat transfer chamber for receiving material to be dried. The chamber includes a first heat transfer gas inlet, a second heat transfer gas inlet, a material inlet, and a gas outlet which also serves as a dried material and gas outlet. A non-pulsing first heat transfer gas source provides a first drying gas to the acoustically augmented heat transfer chamber through the first heat transfer gas inlet. A valveless, continuous second heat transfer gas source provides a second drying gas to the acoustically augmented heat transfer chamber through the second heat transfer gas inlet. The second drying gas also generates acoustic waves which bring about acoustical coupling with the gases in the acoustically augmented heat transfer chamber. The second drying gas itself oscillates at an acoustic frequency of approximately 180 Hz due to fluid mechanical motion in the gas. The oscillations of the second heat transfer gas coupled to the first heat transfer gas in the acoustically augmented heat transfer chamber enhance heat and mass transfer by convection within the chamber. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {7}
}