In the case of repairs (e.g. of deep-freezing systems), the search for the cause of the fault begins. Measuring devices are used to detect possible faults in the electrical system. The thermostat is checked and replaced if defective. Damaged heating rods or heating wires are replaced in the event of a defect in the defrost heating system. Leaks in the cooling pipes are detected by means of a refrigeration pressure test. In this case, the system is filled with a coolant and pressurized by injecting nitrogen. A drop in pressure indicates a leak in the pipe system. If a connection has a leak, this connection piece is replaced or the damaged pipe section is sawn off and a new pipe section is put in place by soldering or welding. After another pressure test, the system is filled up with fresh coolant, a test run is performed and the thermostat is set to the desired temperature.
A familiar evil: Towels often stay damp for hours and are therefore unhygienic. And this also means they can’t do what they are supposed to do. The Lükon towel dryer, which can be switched on as required, offers a solution here. The pivoting towel dryer has an integrated timer. This ensures that the appliance switches itself off automatically. The towel dryer is easy to install.
The term BELC stands for Backer ELC AG, whereby EL refers to the preceding company Electrolux and the C stands for Switzerland.
A trace heating system heats up a pipe using an electrical heating cable which is laid around the pipe. This type of heating is used, for example, to protect water-carrying pipes from frost during winter or to maintain hot water temperatures. The heating cables are made of plastic with integrated carbon particles.
There is an electric heating element in the electrically heated hot water tank. It consists of a heating conductor (resistance wire) in a protective, corrosion-resistant metal tube. The sensor pipe of a temperature-controlled switch can be found next to the heating element for temperature control. Its setpoint can be adjusted with a rotary knob. The switch is usually an electromechanical system, whereby the different coefficients of thermal expansion of different materials (e.g. glass rod in a metal pipe) are utilised together with a snap-action switch. A liquid is often used, which works over a pipe onto a membrane. In addition, a temperature switch is situated near the heating element to prevent fire and destruction should the controller fail. This thermal fuse can be reset or must be replaced after it has tripped.
The temperature sensor and heating element are situated in a vessel made of copper, plastic or — for pressurized boilers — stainless steel sheet, galvanised steel sheet (equipped with a sacrificial anode made of an aluminium-magnesium alloy for corrosion protection) or enamelled steel sheet.
Competitive nozzle heating systems for heating the moulds in die casting.
Various processes are used in industry for controlling the temperature of tools and moulds (e.g. injection moulding and die-casting tools). The best known are:
A flow heater is a permanently installed device for preparing hot water. In contrast to a boiler, which provides a limited amount of hot water in a storage tank, a flow heater only heats the water when a tap is opened. A flow heater can provide continuously hot water thanks to the high heat output. Flow heaters are mostly used for decentralised hot water supply (e.g. in bathrooms, less frequently in kitchens). They are not suitable for preparing boiling water. If the device is used to operate the heating system at the same time, it is referred to as a combination boiler. Current models also facilitate connection to a solar system.
Tank Cr-Ni-Mo sheet steel, 1.4435, welded in inert gas. Tubular heaters made of stainless steel 1.4529, welded into the sealing flange and screwed to the tank by means of a pressure flange. Supplied mounting brackets facilitate wall, ceiling or floor installation. Delivery without thermal insulation. This must be provided by the customer together with the wiring. The connection housing mounted on the front side contains: Thermostat, can be set from 30 – 85°C, limiter, permanently set to 110°C, both connected in main circuit, connection terminals and cable gland.
Operating pressure 6 bar. Test pressure 9 bar. The models from 10 kW have two complete heating elements with connection housings and control devices installed opposite each other. The flow heater must be carefully vented before commissioning. The presence of air bubbles could destroy the heater. Only for horizontal installation.
The flow heater consists of a tube G 2″ with connections G 1″. The tube is manufactured in St 35 and treated with anti-corrosive paint. The heating element is made up of three Lükon tubular heating elements in 1.4541, Ø 8.3 mm. It is installed in the tube with a “G 1½” brass fitting. The plastic connection housing contains a thermostat, which can be regulated from 30 to 85°C with limiter at 110°C, in the main circuit. Degree of protection IP 21. The following versions are available on request:
Recommended installation position: horizontal (vertical installation possible)
Flow heaters for hot water central heating systems can be used as direct heaters, for heating storage water in separate tanks or in combination with other types of energy such as heat pumps, solar energy, etc. Three possible installation types ensure optimum individual use: horizontal floor installation, horizontal or vertical wall installation. The intended type of installation must be specified when ordering so that the connection positions can be determined. Ensure that there is proper ventilation. The built-in thermostat/limiter with overtemperature protection 30-85 / 110°C ensures that the set maximum temperature is not exceeded. The thermostat is connected to the control circuit on the installation side. Custom-made designs possible on request.
Tank made of stainless steel 1.4435 with flange made of steel, plated on one side 18/22 5 Mo or tank made of steel 37 raw. Galvanised version on request. Paintwork in RAL 3002 carmine red (other colours for an extra fee). Tubular heater in stainless steel is installed in the blind flange by means of a nipple. The connection housing mounted on the front side contains: Thermostat, can be set from 30 – 85°C, limiter, permanently set to 110°C, both connected in main or control circuit, connection terminals and cable gland. Available with or without insulation. We require the following data for the production of your flow heater: Installation type, position and size of inlets and outlets, number of heating sections, output, voltage, material properties, with or without insulation, medium, operating temperature, thermostatic head guided through cover or in housing, paintwork. The flow heater must be carefully vented before commissioning. The presence of air bubbles could destroy the heater.
Precise temperature control in cylinder and nozzle heating systems is of significance importance. It is important here that the nozzle is heated in a controlled manner along its entire length. This is the only way that local overheating or possible “freezing” of the melt is prevented.
If the temperature drops below 345°C, the melt hardens very quickly. It is for this reason that the nozzle has to be equipped with a sufficiently large heating element so that the melt does not harden and form plugs.
Electricity (from the Greek ἤλεκτρον ēlektron “Amber”) is the physical generic term for all phenomena caused by static or moving electrical charge. This includes many phenomena we can witness in everyday life such as lightning or the force effect of magnetism. The term “electricity” is not strictly limited to the natural sciences, but certain properties are counted as the core area of electricity: The electrical charge. It is a property of certain atomic particles such as negatively charged electrons and positively charged protons, which are called charge carriers, and is measured in the unit “Coulomb”. The designation positive or negative is chosen arbitrarily. An important property is that the same electrical charges repel each other while unequal charges attract each other. The electric current. It describes a movement of electric charge carriers, is measured in the unit “Amperes” and is, among other things, the cause of magnetic fields. The accelerated movement of electrical charges generates electromagnetic fields which are described in the domain of electrodynamics and which can disperse in areas independently of electrical conductors. We can also refer to field parameters here, such as the electric field, describing state variables of electric charges in a particular space. The associated electrical voltage, also known as electrical potential, links the energy with the electrical charge in the electric field. It is usually measured in volts.
Snow and ice are the biggest disruptive factors that point heating systems have to face, bringing about extremely detrimental effects. Not only do the points have to be cleaned of snow and ice by cumbersome manual work; the timetables also have to be taken into consideration in many cases. We therefore manufacture practical electric point heating systems that are easy to install on the base of the rail or on the rail web and relieve you of these worries. The point heating systems can be activated on the spot or by remote control from the nearest signal box. We also supply heating systems for point locking devices and barrier drives.
In addition to the Ex-heaters, we also manufacture Ex-heating devices and systems in accordance with your requirements. Electronic temperature controllers in Ex-design are available for monitoring room, medium and surface temperatures.
For use in potentially explosive atmospheres, zone 1, e.g. in the petrochemical, chemical and pharmaceutical industry, oil and gas production and distribution, paint and varnish industry, environmental technology, etc.
Housings: EEx de IIC / EEx d IIB.
Built-in temperature controller/limiter to maintain the temperature class. Voltage 110 V…690 V, 1 or 3 phases.
Also called canister heaters or container heaters, depending on the application, drum heaters are used to heat up and reduce the viscosity of substances and liquids in steel drums so that they can be easily filled or pumped into smaller containers, such as tar, paint, resin, grease and chocolate. The heat-up time is between 10 and 48 hours for a 200-litre drum, depending on the design and output of the heater.
The anti-freeze heater made of stainless steel is especially suitable as a frost protection appliance, for heating control boxes and for room temperature control.
Electric heating elements are the most widespread form, they convert electric current into heat. They usually contain a current-bearing heating coil, which is electrically insulated against the material to be heated. Such electrical heating elements[2] are used as an alternative to heating with natural gas in industrial furnaces such as continuous furnaces[1]. Temperatures of over 1200°C can be reached. “Self-regulating heating elements” made of PTC thermistors are a special design. As the temperature increases, the resistance also increases and the heating output P = U²/R decreases. The temperature stabilises as a result. Electrical heating elements can be found in many household appliances today – in flow heaters, washing machines, toasters, hair dryers, irons, coffee machines, but also in industrial applications such as heating hoses, heating hoods or heating sleeves. This form of heat supply accounts for the largest portion of the electricity requirement in Germany. This must be considered as critical, since electricity generation is relatively costly. Using a combustion process directly as a heat source, on the other hand, is significantly cheaper, but usually requires an increased amount of technical input than just plugging a plug into the socket.
An important laboratory instrument, especially in chemistry and biology. They are used to heat up a wide variety of vessels, such as heating baths, Erlenmeyer flasks or beakers. There are simple heating plates, similar to a stove top, as well as those with an additional magnetic stirrer. Only the latter allow for the use of a magnetic stirrer (also called magnetic stir bar or agitator). Heating plates are used to bake photoresist layers on wafers in microelectronics and microsystems technology.
A heater battery is a recuperative heat exchanger and is used in building air conditioning systems.
It increases the temperature for air treatment in ventilation and air conditioning systems.
The heating register can be used in different applications.
Pre-heaters
raise the fresh outside air temperature to +5°C during the winter to prevent frost damage to downstream water-filled system components.
raise the air temperature by 2°C to 3°C for filter drying so that mist or rain droplets carried by the air do not soak the air filter to be protected.
raise the air temperature before evaporative humidification to achieve better moisture absorption of the air.
Heaters regulate the temperature of the fresh outside air so that the supply air does not enter rooms too cold.
overheat the supply air in such a way that the static heating of the rooms is relieved or replaced.
Reheaters are connected downstream of a cooler and raise the air temperature after a dehumidification process to such an extent, that the supply air is not driven into the rooms too cold.
are connected downstream of a heat recovery system to raise the supply air temperature using the extraction air temperature.
are connected downstream of the central air treatment system and provide different temperatures for different supply air zones.
The term has also been used for an extension of the stove pipe for wood and coal stoves, through which smoke was passed to give off even more warmth before the smoke was directed into the chimney. You could also refer to reheating surfaces as reheaters.
Indestructible direct heaters made of chromium-nickel steel sheet 1.4404. They are installed in public facilities such as toilets and waiting areas, but also in damp rooms, slaughterhouses, sewage treatment facilities, machine halls, etc. With their combined radiant and convection heating, they are ideal both for temperature control in between seasons and for continuous heating of exposed spaces.
For heating water using electrical energy. For this purpose, it is immersed in a water-filled container. An immersion heater essentially consists of a tubular heater connected to a plug via a cable. The protective pipe of the tubular heater is usually made of nickel- or gold-plated brass, copper or stainless steel and is connected to the protective contact of the plug via the protective conductor of the connecting cable on the majority of newer devices. The connection of the tubular heater to the cable is designed as a heat-insulating handle at the same time.
The base plate is made of aluminium and chrome steel sheet 1.4016 and fitted with insulation (20 mm). Tubular heating elements, stainless steel 1.4541, are used for the heating, mounted on steatite supports on the base. The anti-vibration heater is completely silent during use. A perforated cover made of colourless anodised Peraluman sheet metal with expansion elements provides protection. The cover is tapered at the top and bottom depending on the version. A further plus point is the built-in safety sheet as drip protection for liquid and solid media. Fixing holes for installation are provided in the base.
A grommet – with tension pressure relief – is fitted in the rear wall. Terminals are used for the electrical connection. The overheating protection with safety thermostat is permanently set to 80°C.
The heating plates are suitable for various heating processes up to 300°C (limitation at 350°C) in laboratories and workshops.
Electrical structural components that exploit the temperature dependence of the electrical resistance of conductors to measure the temperature. Pure metals exhibit stronger resistance changes than alloys and have a relatively constant temperature coefficient of the electrical resistance. Corrosion-resistant metals, usually platinum, are used for precise measurements since they demonstrate particularly low deterioration properties and because the thermometers can be manufactured from them with low error limits. The temperature-sensitive sensor, the measuring resistor, can also consist of ceramic (sintered metal oxides) or semiconductors, which allows for much higher temperature coefficients than with metals and thus also much higher sensitivities to be achieved, but with lower precision and considerable temperature dependency of the temperature coefficient itself. These resistors are called thermistors, whereby heating conductors (NTC resistors) are used in measurement technology rather than cold conductors (PTC resistors).
Contact us at +41 62 837 62 80 or info@backerelc.ch
For over 90 years now we have been developing, producing and selling highly compressed round and flat heating rods for industrial and commercial applications. We capitalise on these many years of experience to offer our customers tailored overall solutions in the areas of heating, measuring and controlling.
