Abstract: An energy facility with a tank defining a reservoir. A fluid fills the reservoir, a thermoelectric generator is connected to the tank, and a heating element is connected to the tank.

Abstract: The cutter blade and mandrel of a tube cutter coact through sloped surfaces having a tongue-and-groove connection. Relative axial movement between the mandrel and cutter blade causes the cutter blade to move radially inward or outward and the tongue-and-groove connection permits the mandrel and cutter blade to rotate as a unit to thereby increase the effective cutter height of the blade by the height of the underlying mandrel.

Abstract: A tube cleaning device comprising a body extending both in a longitudinal direction and a transverse direction and defining an opening in a first end and a longitudinally extending recess in communication with the opening, wherein the perimeter of the recess is larger than the perimeter of the opening. The cleaning device further comprises a neck extending longitudinally from a second end of the body and having a perimeter less than the perimeter of the opening, a plug extending longitudinally from the neck and having a perimeter larger than the perimeter of the opening but smaller than the perimeter of the recess, and a scraper extending from a side of the body.