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The design, performance and optimization of the extruded electrically heated metal converter have recently been published(1,2). The present paper focuses on the physical durability of extruded metal EHC support at high temperature representative of operating conditions. The mechanical, thermal, creep and fatigue properties of Fe-Cr-Al honeycomb structure over 25°-1000°C temperature range are reported. In addition, the stresses arising from mounting and thermal loads are computed via finite element analysis and compared with the high temperature strength of extruded metal EHC support. A safe design stress which predicts 192,000 kilometer durability is estimated from high temperature fatigue behavior of extruded Fe-Cr-Al honeycomb structure.

The energy consequences of 17 industrial electrotechnologies are considered in the context of 14 2-digit SIC industries as a basis for utility demand-side management decision making. A matrix of electrotechnology-industry application combinations is presented in which each entry falls into one of four categories: (1) increased electricity and primary fuel use, but with positive impact on other production factors, (2) decreased electricity use with negligible end-use fossil fuel impact, (3) increased electricity use but reduced primary fuel use, and (4) decreased electricity and primary fuel use. Examples are presented and energy impacts calculated for several cases to illustrate the tradeoffs involved in electrotechnology process substitution. The implications of these tradeoffs in terms of utility demand-side management program strategies are discussed.