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Heaters with positive temperature coefficients are self-regulating devices that operate in an open loop without any external diagnostics. PTC heaters, on the other hand, use conductive inks printed on thin, flexible polymer-based surfaces instead of wires and coils to create heat. They are excellent for goods that demand faster, safer, and more consistent heating. As a result of the PTC heater’s material characteristics, it may function as its own sensor, removing the need for external feedback controls.
As a consequence, the heater removes the possibility of overheating from the start of the process. Materials with a positive resistance change in response to an increase in temperature are used in PTC heaters. Due to an increase in electrical resistance when the temperature rises, the current flow is constrained as a result of this. According to the material, current can flow when the threshold temperature is below zero, but as the temperature increases, the flow of current is inhibited.
PTC heaters employ materials whose resistance increases as the temperature rises. The current flow is restricted as a result of an increase in electrical resistance when the temperature rises. When the threshold temperature is below zero, current can flow, but as the temperature rises, current flow is prevented.
A significant role in the automobile sector is played by heating, ventilation, and air conditioning (HVAC). The adoption of a better HVAC system has an impact on the passengers’ thermal comfort and the electric vehicle’s battery efficiency. Excess engine heat used to be used in conventional cars to heat the interior. More efficient engines in today’s automobiles produce less heat. As a result, Positive Temperature Coefficient (PTC) technology has been able to tackle current car heating difficulties. This is a sort of self-regulating heater, which does not require any external diagnostics control. Heaters with a set resistance used to have coils and wires to generate heat.
With vehicle sales set to increase in Asia since nations like China, Taiwan and South Korea are leaders in chip manufacturing technology. It is expected that electric car sales in India would increase sales of PTCs in the area. The GCC nations, Turkey, South Africa, etc., are projected to have stronger economic conditions than other countries in the MEA area, resulting in higher demand. There’s a good chance that an improving economic climate in Africa will contribute a little amount of increase to sales.
West and North America are projected to have significant development potential because of strict regulations and a greater uptake rate of newer, more environmentally friendly technology. In Latin America and the Middle East & Africa, electric car sales will increase at the slowest rate due to the lack of infrastructure and the abundance of oil. With a maximum thickness of 0.001-inch, PTC heaters take up a very little amount of space. As a result, they are more cost-effective and lighter than traditional heating systems. If you fold them up or poke them, they won’t be damaged. Defensive against chemical and water corrosion, they have an extended lifespan.
The Global Automotive PTC Heater Market can be segmented into following categories for further analysis.
Temperature-limiting PTC air heaters eliminate the risk of overheating by self-regulating. Air heaters that employ PTC technology have self-regulating features that ensure maximum safety. Because of this, the heating system has a longer lifespan than conventional heating systems. They circulate air using big aluminium fins whose surface area provides a uniform heat transfer with a low output. This allows for automated heating power regulation at any given moment.
The latest technology has been the Insulated PTC Heaters. HVAC systems employ insulated PTC air heaters (HRPs). Modular in design, they can adapt to any cross-section of customers’ ventilation ducts, and their delta-shaped fins ensure minimum pressure drop. When used in EPP/EPS housings, their low radiation and low temperature overshoot make them ideal. The ideal convection heater is created by combining the PTC effect with a thermally optimised aluminium profile. The heater dynamically changes its power based on the outside temperature in order to protect electrical enclosure components from frost and moisture. As a result of thermal calculations, a small and slender aluminium profile with excellent performance has been created.
Different organizations are currently using high voltage PTC (positive temperature coefficient) heating components to increase the performance of electric cars in the winter. These heating components are more compact, lighter, and cheaper thanks to a new technique of integrating the electronics. Even in cold conditions, heat pumps may extend cruise ranges by up to 20 percent or more. These heating systems make electric vehicles more comfortable and help to extend their cruising range, an important issue, especially in winter. The built-in electronics continuously analyse the electrical resistance of the PTC elements in the heater and thus know and are able to adjust their temperature. This specific innovation does away with temperature sensors and instead uses an intelligent system of hardware and software, which incorporates the heating elements and integrates all of the functions.
Temperature-limiting PTC air heaters eliminate the risk of overheating by self-regulating. For this reason, FIN PTC air heaters always function at the greatest safety levels. Because of this, the heating system has a longer lifespan than conventional heating systems. They circulate air using big aluminium fins whose surface area provides a uniform heat transfer with a low output.
KLC has brought in the latest development within the PTC Air Heater for better requirements of heating and designed compliance to regulations. KLC’s MH Type PTC Air Heaters are designed with single stage heating (full power). However, MH type PTC Air Heaters can be designed with multiple power stage by heating one or two tubes at a time. It is more power efficient and will help extend heater lifetime. PTC’s unique heat property allows the PTC heat output to be regulated by the airflow applied. The higher the airflow, the higher the heat output and power(wattage). Hence depending on the end design, if the ambient temperature is high, the PTC output power will decrease, if the airflow is high with low ambient temperature, then the PTC output power will increase. It is placed in a plastic frame based upon temperature resistant structural requirements.
Borg Warner Inc has recently introduced the latest High Voltage Cabin Heating Technology. The High-voltage positive temperature coefficient (PTC) cabin heating technology has an enclosed heater rod with a glue-free, pure mechanical press construction, which provides good heat transmission and dependability. In addition, it has a DC dielectric strength of 4.3 kV because to its double insulation protection. Due to its dual-zone capability, both the heater rod and fin designs provide for accurate and rapid delivery of specific temperatures to the driver and passengers without the noise and waste associated with single-zone heaters. To facilitate full current flow and high temperatures, the cabin heating system uses ceramic PTC components that have very low electrical resistance at low temperatures.
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