Reradiant recuperation for aluminum melters
A research program in progress for evaluating the performance of reradiant recuperators, being tested to recovery heat from the gases from a scrap aluminum melting furnace, is described. A recuperator is a gas-to-gas heat exchanger in which flue gas heat is transferred to colder combustion air through a ceramic or metal separation wall. A radiant recuperator passes the cold air through an annular space, the center of which is heated by flue gas. The reradiant recuperator suspends a solid insert of a material having high thermal conductivity in the core, i.e., hot gas flow section, of a radiant recuperator to enhance heat recovery. This study showed that the performance of a conventional-sized recuperator can be increased from 15 to 25% depending on optimum design of the insert, the design capacity of the recuperator, and the inlet flue gas temperature. The use of reradiant recuperators can reduce the size of recuperator required, which represents a savings in material and installation costs in addition to the 8% savings in fuel consumption which should result from a 15% increase in radiant recuperator efficiency. (LCL)
- OSTI ID:
- 5850124
- Report Number(s):
- CONF-7906138-1
- Resource Relation:
- Conference: 4. aluminum industry energy conservation workshop, Washington, DC, USA, 19 Jun 1979
- Country of Publication:
- United States
- Language:
- English
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Reradiant recuperator: development and demonstration
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Related Subjects
FURNACES
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
ECONOMICS
PERFORMANCE
ALUMINIUM
CONVECTION
DESIGN
ENERGY CONSERVATION
FLUE GAS
FUEL CONSUMPTION
METAL INDUSTRY
RADIANT HEAT TRANSFER
RESEARCH PROGRAMS
WASTE HEAT
WASTE HEAT UTILIZATION
ELEMENTS
ENERGY
ENERGY CONSUMPTION
ENERGY RECOVERY
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
GASEOUS WASTES
HEAT
HEAT TRANSFER
INDUSTRY
METALS
RECOVERY
WASTE PRODUCT UTILIZATION
WASTES
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization