You are here

A TORSIONAL RHEOMETER FOR MEASURING THE PROPERTIES OF COAL AND COAL SLURRIES

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 17642
Amount: $492,100.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1993
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
4693 Magnus Dr
Allison Park, PA 15101
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. Louyi Tao
 () -
Business Contact
 Dr. Chandrika Rajagopal
Phone: (412) 486-1087
Research Institution
N/A
Abstract

THE PROCESSES AND EQUIPMENT FOR HANDLING SOLIDS AND SLURRIES ARE QUITE INEFFICIENT WHEN COMPARED WITH EQUIPMENT THAT HANDLES LIQUIDS AND GASES. THIS IS LARGELY BECAUSE DESIGNERS DO NOT CLEARLY UNDERSTAND THE BEHAVIOR OF GRANULAR SOLIDS AND SLURRIES SUCH AS COAL-WATER SLURRIES. IN PHASE I OF THIS PROJECT, A TORSIONAL RHEOMETER THAT CAN BE USED TO MEASURE THE MATERIAL PROPERTIES OF GRANULAR SOLIDS SUCH AS COAL AND COAL-WATER SLURRIES IS BEING DESIGNED. THE RHEOMETER CONSISTS OF TWO PARALLEL DISKS MOUNTED ON AIR BEARINGS THAT ARE ROTATED BY MOTORS ABOUT A COMMON AXIS. A STRAIN GAUGE IS MOUNTED ALONG THE Z DIRECTION. A STRAIN ROSETTE IS MOUNTED ON THE BOTTOM DISK-THAT IS, STRAIN GAUGES ARE MOUNTED ALONG THE X AND Y DIRECTIONS, AND ONE IS MOUNTED AT A 45 DEGREE ANGLE. THIS WILL HELP DETERMINE THE TRACTIONS AND MOMENTS ON THE BOTTOM PLATE THAT IN TURN WILL HELP DETECT THE MATERIAL PROPERTIES (SUCH AS COHESION, ADHESION, VISCOSITY, ETC.) OF THE GRANULAR SOLID. THE DISKS MUST BE ROUGH SO THAT THE GRANULAR MATERIALS CAN ADHERE TO THEM. IN PHASE II, IT IS PLANNED TO FABRICATE SUCH A RHEOMETER WITH WHICH TO DETERMINE THE MATERIAL MODULI CHARACTERIZING GRANULAR MATERIALS AND COAL SLURRIES.

* Information listed above is at the time of submission. *

US Flag An Official Website of the United States Government