Modular heater systems

1. A heat trace assembly comprising:

a heat trace section comprising:

a pair of bus-conductors;

a semiconductive polymer material surrounding the bus-conductors and functioning as a heating element;

a dielectric material surrounding the semiconductive polymer material; and

an outer insulating jacket surrounding the dielectric material;

an insulation jacket surrounding the heat trace section;

a plurality of standoffs disposed between the heat trace section and the insulation jacket; and

a corresponding plurality of passageways formed between the heat trace section and the insulation jacket and between the plurality of standoffs.

2. The heat trace assembly according to claim 1 , wherein the standoffs are integrally formed with the insulation jacket.

3. The heat trace assembly according to claim 1 , wherein the standoffs are integrally formed with the heat trace section.

4. The heat trace assembly according to claim 1 , wherein the standoffs are separate pieces that are assembled to the insulation jacket.

5. The heat trace assembly according to claim 1 , wherein the standoffs are separate pieces that are assembled to the heat trace section.

6. The heat trace assembly according to claim 1 , wherein the standoffs are fins.

7. The heat trace assembly according to claim 1 , wherein the standoffs are a part of the insulation jacket and define a distal end portion, and the distal end portion physically contacts the heat trace section to concentrically position the heat trace section within the insulation jacket.

8. The heat trace assembly according to claim 1 , wherein the plurality of passageways are filled with a material selected from the group consisting of an insulating material and a low emissivity material.

9. The heat trace assembly according to claim 1 , wherein the insulation jacket further comprises a plurality of chambers that extend longitudinally between an outer wall and an inner wall of the insulation jacket.

10. The heat trace assembly according to claim 9 , wherein the plurality of chambers are filled with a material selected from the group consisting of an insulating material and a low emissivity material.

11. An insulation jacket for use in a heating system having at least one heat trace section, the heat trace section comprising a pair of bus-conductors, a semiconductive polymer material surrounding the bus-conductors and functioning as a heating element, a dielectric material surrounding the semiconductive polymer material, and an outer insulating jacket surrounding the dielectric material, the insulation jacket comprising a plurality of standoffs extending from an inner surface of the insulation jacket and inwardly towards the heat trace section, wherein a plurality of passageways are formed between the heat trace section and the insulation jacket and between the plurality of standoffs.

12. The insulation jacket according to claim 11 , wherein the standoffs are integrally formed with the insulation jacket.

13. The insulation jacket according to claim 11 , wherein the standoffs are separate pieces that are assembled to the insulation jacket.

14. The insulation jacket according to claim 11 further comprising a plurality of segments and at least one reduced area disposed between the segments, wherein the reduced area allows the segments to be rotatable about the reduced area.

15. The insulation jacket according to claim 14 , wherein the segments and the reduced area are integrally formed with the insulation jacket such that the insulation jacket is a single, unitary piece.

16. The insulation jacket according to claim 11 , wherein the standoffs extend longitudinally along the length of the insulation jacket.

17. The insulation jacket according to claim 11 , wherein the standoffs extend circumferentially around the insulation jacket.

18. The insulation jacket according to claim 11 , wherein the standoffs are discontinuous along the length of the insulation jacket.