An electrical heating device has several cartridges disposed one above the other, each of which has two openings disposed on opposite face side surfaces. One of the openings forms an inlet, and another of the openings forms an outlet. Deflection devices deflect flow within the cartridges from a first cartridge to a second cartridge that is adjacent to the first cartridge. A PTC heating device is provided between two adjacent cartridges and is coupled in a thermally conductive manner to flow channels provided in the adjacent cartridges.

A modular platform electric trench heater is provided. The electric trench heater has a case having a first end and a second end, an electrical heating unit disposed in the case and designed to generate heat and create an upward convection current therethrough, a baffle dividing the case in a longitudinal direction into a first portion and a second portion, wherein the baffle is designed to direct the upward convection current from the first portion of the case to the second portion of the case, and a connecting unit provided in the form of a connecting plate and a plate fixing mechanism that couples the connecting plate to the first end of the case.

A modular platform electric trench heater is provided. The electric trench heater has a case having a first end and a second end, an electrical heating unit disposed in the case and designed to generate heat and create an upward convection current therethrough, a baffle dividing the case in a longitudinal direction into a first portion and a second portion, wherein the baffle is designed to direct the upward convection current from the first portion of the case to the second portion of the case, and a connecting unit provided in the form of a connecting plate and a plate fixing mechanism that couples the connecting plate to the first end of the case.

An electric heating pot including a body unit and a heating unit configured to provide heat to the body unit. The body unit includes an accommodation space configured to accommodate liquid, the heating unit includes a housing formed such that electrolyzed water is disposed therein, and an electrode portion that is disposed in the housing, formed such that at least one region thereof is in contact with the electrolyzed water in the housing, and includes a plurality of electrodes.

A main energizing/heating unit has an outer electrode and an inner electrode, and energizes a fool material to be gelatinized by heating and continuously heat-treats it while it is conveyed in a food flow channel. The food flow channel in which the food material flows is formed between the both electrodes. Fed to the food material flowing in the food flow channel by a power supply section is a current in a direction traversing a flow direction of the food material. An inner cooling flow channel is formed in the inner electrode, and cooling liquid is fed to the inner cooling flow channel through a piping.

The invention relates to an apparatus for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating, the apparatus comprising at least two vertically mounted, longitudinal, heating chambers that are arranged in series. The invention further relates to a process for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating in such apparatus comprising (a) continuously supplying the liquid product to the first heating chamber in series and flowing the liquid product continuously through the at least two heating chambers; (b) continuously generating an electrical current through the liquid product flowing through the heating chambers by continuously applying an electrical potential over each heating chamber, wherein the direction of the current is continuously alternated with a frequency of at least 500 Hz, to obtain heated liquid product; and (c) continuously discharging heated liquid product from the last heating chamber in series, wherein the liquid product has an electrical conductivity of at least 0.03 S/m.

The invention relates to an apparatus for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating, the apparatus comprising at least two vertically mounted, longitudinal, heating chambers that are arranged in series. The invention further relates to a process for fast and homogeneously heating a liquid product to a heating temperature by means of resistive heating in such apparatus comprising (a) continuously supplying the liquid product to the first heating chamber in series and flowing the liquid product continuously through the at least two heating chambers; (b) continuously generating an electrical current through the liquid product flowing through the heating chambers by continuously applying an electrical potential over each heating chamber, wherein the direction of the current is continuously alternated with a frequency of at least 500 Hz, to obtain heated liquid product; and (c) continuously discharging heated liquid product from the last heating chamber in series, wherein the liquid product has an electrical conductivity of at least 0.03 S/m.

A Vacuum Arc Remelting controller apparatus wherein process control is accomplished primarily through control of pool power. Pool power being defined as the total energy flux into a top ingot surface of the VAR ingot. The controller apparatus of the present invention comprises a controller computer that transmits commands to the host furnace through an ethernet connection.

An ohmic heater for heating a conductive fluid has a plurality of electrodes mounted to a structure with spaces between the electrodes. The electrodes (14) are selectively connect to poles (38, 40) of a power supply, so that some electrodes are connected to the poles and others remain isolated from the poles. Shunting switches are provided for connecting two or more of the isolated electrodes to one another. The shunting switches allow formation of a large number of different connection schemes having a variety of different electrical conduction paths through fluid in the spaces and a variety of resistances between the poles with relatively few electrodes and spaces.

An ohmic heater for heating a conductive fluid has a plurality of electrodes mounted to a structure with spaces between the electrodes. The electrodes (14) are selectively connect to poles (38, 40) of a power supply, so that some electrodes are connected to the poles and others remain isolated from the poles. Shunting switches are provided for connecting two or more of the isolated electrodes to one another. The shunting switches allow formation of a large number of different connection schemes having a variety of different electrical conduction paths through fluid in the spaces and a variety of resistances between the poles with relatively few electrodes and spaces.