Method and apparatus for converting a fluid tracing system into

Details Method and apparatus for converting a fluid tracing system into Method and apparatus for converting a fluid tracing system into

1985-05-09

1987-04-28

Gellner, Michael L.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

F24H 110

Patent

active

046616870

ABSTRACT:
A method and apparatus for converting a fluid tracing system, e.g., a thermally insulated steam heat tracing system for a substrate, into an electrical heat tracing system for the substrate. A typical steam tracing system includes a substrate to be heated; an interconnecting system of steam tracing tubes adjacent to and in thermal contact with the substrate; and thermal insulation surrounding the substrate and steam tracing tubes. The conversion method includes the steps of removing the thermal insulation at spaced-apart locations and opening up the plurality of interconnected tubes so that elongate electrical heating elements can be inserted into the tubes, inserting elongate electrical heating elements into the tubes, and connecting the elongate electrical heating elements to a power supply in order to heat the substrate. Preferably, a gel-forming liquid is introduced into the elongate tubes and is converted into a gel within the tubes.

REFERENCES:
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patent: 4203186 (1980-05-01), Horner
patent: 4401156 (1983-08-01), Wojtecki et al.
patent: 4459473 (1984-07-01), Kamath
Ando, "Heating Pipelines with Electrical Skin Current", 3-9-1970, pp. 154-158.

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