Abstract: A heater is provided for a waste water system comprising of a heating element encased in a protective pipe. The pipe is closed at one end and attached at the opposite end to an end cap that may be connected by a standard fitting to a sewer installation. The protective pipe is sealed to the end cap and the heating element is removable from within the protective pipe without adversely affecting the integrity of the installation.

Abstract: A method of forming an end seal on a cable. The method includes placing a curable sealant in a cavity formed in a boot, inserting an end of the cable in to the cavity with the boot extending about the exterior of the cable, forcing the cable in to the curable sealant while inhibiting the egress of curable sealant from the boot to force the curable sealant along the interior of the cable, curing the curable sealant to provide a stable load supporting layer of sealant within the cable, and applying a crimping ring to the boot in the area of the load supporting layer to secure the boot to the cable.

Abstract: A method of forming an end seal on a cable is provided. The method includes providing a curable sealant in a cavity formed in a boot, inserting an end of the cable in to the cavity with the boot extending about the exterior of the cable, forcing the cable in to the curable sealant whilst inhibiting the egress of curable sealant from the boot to force the curable sealant along the interior of the cable, curing the curable sealant to provide a stable load supporting layer of sealant within the cable, and applying a crimping ring to the boot in the area of the load supporting layer to secure the boot to the cable.

Abstract: An energy transfer unit for a geothermal system includes an outer housing. A heat exchanger is located within the housing. An inlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid to the heat exchanger and an outlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid from the heat exchanger.

Abstract: A heating assembly for use in a fluid line has a heating cable including electrical resistance wires encapsulated in a metal sheath. The cable passes through a fitting where it is connected to a power supply. The connection between the power supply and the heating cable is encapsulated within the fitting, and the metal sheath is secured to the fitting with a permanent connection. A bushing is provided to support the connection between the resistance wires and the power supply within the fitting. The elongate sheath may be inserted into a fluid line and the fitting connected to that line using a mechanical connection.

Abstract: A heater is provided for a waste water system comprising of a heating element encased in a protective pipe. The pipe is closed at one end and attached at the opposite end to an end cap that may be connected by a standard fitting to a sewer installation. The protective pipe is sealed to the end cap and the heating element is removable from within the protective pipe without adversely affecting the integrity of the installation.

Abstract: An energy transfer unit for a geothermal system includes an outer housing. A heat exchanger is located within the housing. An inlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid to the heat exchanger and an outlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid from the heat exchanger.

Abstract: A heating assembly for use in a fluid line has a heating cable including electrical resistance wires encapsulated in a metal sheath. The cable passes through a fitting where it is connected to a power supply. The connection between the power supply and the heating cable is encapsulated within the fitting, and the metal sheath is secured to the fitting with a permanent connection. A bushing is provided to support the connection between the resistance wires and the power supply within the fitting. The elongate sheath may be inserted into a fluid line and the fitting connected to that line using a mechanical connection.

Abstract: An energy transfer wilt suitable for a geothermal heating system is formed from a plurality of modules. Each module has a frusto conical baffle overlying a heat exchange core to direct fluid radial across the core. A chimney is provided centrally in the baffle to promote radial flow. The modules may be located within a housing and ports are provide to allow flow in to the housing adjacent each of the cores.

Abstract: An energy transfer unit for a geothermal system includes an outer housing. A heat exchanger is located within the housing. An inlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid to the heat exchanger and an outlet pipe extends from the housing to the heat exchanger to convey heat transfer fluid from the heat exchanger.

Abstract: A heated vent cap assembly is provided which can be coupled to a pipe originating from a plumbing system within a building. A heating element is wound around an inner cylinder which is wrapped in a conductive foil and enveloped by a larger diameter outer cylinder which is lined with a reflective foil defining a void there between. The cylinders are secured at an upper end by an end cap and at a lower end by a lower end cap and a tether is tautly secured within the inner cylinder by a bridge in an opening of the end cap and a lower disk engaged with the lower end of the inner cylinder to support ice blocks formed therein. The heating cable generates heat, which is reflected by the reflective foil and absorbed by the conductive foil to prevent ice from forming on the inner surface of the inner cylinder.