In some examples, a liquid container comprises a chamber forming a volume containing a liquid, an elongated strip extending into the volume containing the liquid, a plurality of heaters supported by the strip along the strip, and a plurality of temperature sensors supported by the strip along the strip. The temperature sensors output signals indicative of dissipation of heat from the heaters to indicate a level of the liquid in the volume.

A thermal immersion circulator comprising a housing defining a cavity, a heater comprising a heating element, wherein at least a portion of the heating element is located within the cavity of the housing, a coupling assembly securing the heater within the housing, and a seal isolating the coupling assembly from direct contact with the heater. The heater comprises a side surface having longitudinal axis, a fluid inlet in communication with a fluid outlet, and a fluid heating portion located between the fluid inlet and the fluid outlet. The heater also comprises at least one seal located adjacent the outlet and a heating element wrapped at least partially about the fluid heating portion. The heating element comprises a plurality of resistive bands arranged on the tubular side wall such that a first portion of a resistive band adjacent the fluid outlet is longitudinally spaced further from the fluid outlet than an opposing second portion of the resistive band to reduce transfer of heat generated by the resistive band to the seal whilst heating the fluid substantially along a longitudinal length of the fluid heating portion.

Disclosed is a graphene heater for an oil tank of an oil field. A heating layer of the heater is a graphene layer (2); a high-temperature-resistant insulating layer (1), an intermediate layer composed of the graphene layer (2) and electrode layers (3), and a high-temperature-resistant insulating layer (1) are tightly attached together in sequence and then attached to an inner wall of a housing (5); the housing (5) is columnar; one end of the housing (5) mounted in the oil tank is closed; the other end of the housing is fixed on a surface of the oil tank by means of a flange plate (4); the flange plate (4) of the housing (5) is partially connected to a junction box (8); and when the electrode layers (3) at two ends of the graphene layer (2) are powered on, under the action of an electric field, heat energy generated by severe friction and impact between carbon atoms of graphene is radiated by means of far infrared ray with a wavelength of 5 to 14 microns, so that heat is effectively provided, so as to realize heating, heat preservation and freezing prevention of the oil tank of the oil field.

A household appliance is configured to implement an automatic cycle of operation for treating an article. The household appliance includes a treating chamber configured to receive the article for treatment according to the automatic cycle of operation. A sump is fluidly coupled to the treating chamber. A liquid circuit is fluidly coupled to at least one of the treating chamber or the sump. An immersible heater is located within the sump.

A household appliance is configured to implement an automatic cycle of operation for treating an article. The household appliance includes a treating chamber configured to receive the article for treatment according to the automatic cycle of operation. A sump is fluidly coupled to the treating chamber. A liquid circuit is fluidly coupled to at least one of the treating chamber or the sump. An immersible heater is located within the sump.

An aerosol-generating system is provided, including a main unit including a power supply; and a cartridge removably mounted to the main unit and including: a liquid storage portion to store a liquid, a heater assembly including a flat-shaped fluid-permeable heating element, including first and second surfaces, the first surface arranged in an upstream position to receive a liquid, and the second surface arranged in a downstream position to release the liquid in vaporized form, and a capillary body having a first elongated end and a second end, the first elongated end extending into the storage portion to contact the liquid, the second end contacting the first surface of the heating element, a cross-sectional area of the capillary body at the second end is greater than that at the first elongated end, the capillary body including capillary fibers at the first elongated end and at the second end.

An aerosol-generating system is provided, including a main unit including a power supply; and a cartridge removably mounted to the main unit and including: a liquid storage portion to store a liquid, a heater assembly including a flat-shaped fluid-permeable heating element, including first and second surfaces, the first surface arranged in an upstream position to receive a liquid, and the second surface arranged in a downstream position to release the liquid in vaporized form, and a capillary body having a first elongated end and a second end, the first elongated end extending into the storage portion to contact the liquid, the second end contacting the first surface of the heating element, a cross-sectional area of the capillary body at the second end is greater than that at the first elongated end, the capillary body including capillary fibers at the first elongated end and at the second end.

An SCR dosing pump assembly for conveying and providing a liquid exhaust gas purification additive includes: a plastic housing; a multi-part aluminum frame having first part and a second part; and at least one positive temperature coefficient (PTC) heating element configured as an electrically conductive contact between the first part and the second part of the aluminum frame. No further electrically conductive contacts exist between the first part and the second part of the aluminum frame. The multi-part aluminum frame is molded into the plastic housing of the SCR dosing pump assembly.

A heater system includes a heater bundle having a plurality of heater assemblies and a plurality of power conductors. More than one of the heater assemblies includes a plurality of heater units, and more than one of the heater units defines at least one independently controlled heating zone. The plurality of power conductors are electrically connected to the independently controlled heating zones. The heater system further includes means for determining temperature, and a power supply device including a controller configured to modulate power to the independently controlled heating zones through the power conductors based on the determined temperature to provide a desired power output along a length of more than one of the heater assemblies.

A heater system includes a heater bundle having a plurality of heater assemblies and a plurality of power conductors. More than one of the heater assemblies includes a plurality of heater units, and more than one of the heater units defines at least one independently controlled heating zone. The plurality of power conductors are electrically connected to the independently controlled heating zones. The heater system further includes means for determining temperature, and a power supply device including a controller configured to modulate power to the independently controlled heating zones through the power conductors based on the determined temperature to provide a desired power output along a length of more than one of the heater assemblies.