Abstract: A coil assembly for a combustion chamber includes a first tube arranged into a plurality of inner coils and a second tube arranged into a plurality of outer coils that surround the plurality of inner coils. Each inner coil contacts adjacent inner coils. The plurality of outer coils are separated from adjacent outer coils by a plurality of spaces. The first and second tubes are configured to transport a heat transfer fluid (HTF). The plurality of inner coils are separated from the plurality of outer coils by a gap. The coil assembly also includes a cylindrical shroud surrounding at least a portion of the coil assembly. The cylindrical shroud has a length that is less than a length of the coil assembly.

Abstract: A heating apparatus comprises an exposed tube formed into an outer coil and an inner coil. The outer coil is formed around the inner coil with a gap separating the outer coil and the inner coil. The tube is supported by a support frame. The heating apparatus also comprises a spacer frame that extends from the top portion of the support frame to the base portion of the support frame. The spacer frame has a plurality of apertures formed therein, each aperture operable to support a corresponding ring of the outer coil. The apparatus also comprises a spacer rod having a first end that couples to the top portion of the support frame and a second end that couples to the base portion of the support frame, wherein the spacer rod is threaded through the spacer frame between the outer coil and the vertex of the spacer frame.

Abstract: A system for heating a pipeline comprises a heater that heats a fluid, a supply line, and a return line. Heated fluid flows through the supply line away from the heater and through the return line back to the heater. The system further comprises a strap having a first end, a second end, and a middle portion between the first end and the second end. The strap forms a first pocket when the first end is folded over and attached to the middle portion of the strap. The strap forms a second pocket when the second end is folded over and attached to the middle portion of the strap. The first pocket holds the supply line in thermal contact with a first portion of the pipeline. The second pocket holds the return line in thermal contact with a second portion of the pipeline.

Abstract: A system for heating a pipeline comprises a heater operable to heat a fluid, a supply line and a return line. A first strap is positioned at a first portion of a pipeline. A first pocket of the first strap holds the supply line in thermal contact with the first portion of the pipeline. A second pocket of the first strap holds the return line in thermal contact with the first portion of the pipeline. A second strap is positioned at a second portion of the pipeline. A third pocket of the first strap holds the supply line in thermal contact with the second portion of the pipeline. A fourth pocket holds the return line in thermal contact with the second portion of the pipeline.

Abstract: A heating and cooling apparatus for hazardous environments is disclosed. The apparatus has a housing having an air inlet and an air outlet. The apparatus further comprises a motor having a shaft and an electrical component and a metallic impeller having an impeller inlet and blades. The impeller inlet faces the air inlet of the housing and the impeller is coupled to the shaft of the motor. The apparatus also has an air filter removably positioned at the air inlet of the housing. A coil is removably positioned inside the housing between the air outlet and the impeller blades. A valve is also coupled to the coil, the valve being operable to regulate the temperature of the coil by controlling the flow of fluid into the coil.

Abstract: A heating apparatus comprises an exposed tube formed into an outer coil and an inner coil. The outer coil is formed around the inner coil with a gap separating the outer coil and the inner coil. The tube is supported by a support frame. The heating apparatus also comprises a spacer frame that extends from the top portion of the support frame to the base portion of the support frame. The spacer frame has a plurality of apertures formed therein, each aperture operable to support a corresponding ring of the outer coil. The apparatus also comprises a spacer rod having a first end that couples to the top portion of the support frame and a second end that couples to the base portion of the support frame, wherein the spacer rod is threaded through the spacer frame between the outer coil and the vertex of the spacer frame.

Abstract: A system for heating a pipeline comprises a heater operable to heat a fluid, a supply line and a return line. A first strap is positioned at a first portion of a pipeline. A first pocket of the first strap holds the supply line in thermal contact with the first portion of the pipeline. A second pocket of the first strap holds the return line in thermal contact with the first portion of the pipeline. A second strap is positioned at a second portion of the pipeline. A third pocket of the first strap holds the supply line in thermal contact with the second portion of the pipeline. A fourth pocket holds the return line in thermal contact with the second portion of the pipeline.