Description
Fluid PTC liquid heaters are advanced electric heating devices designed to efficiently and safely heat various fluids (such as air, water, and oil) using positive temperature coefficient (PTC) ceramic heating elements as their core technology.
Their core operating principle relies on the unique properties of PTC materials: at low temperatures, their resistance is low, enabling rapid startup and substantial heat generation. Once the temperature reaches its specific Curie point, their resistance increases exponentially, automatically reducing power consumption and achieving precise, automatic temperature control without external control components. This "self-limiting" feature is their core advantage.
Specification
Operating voltage: 12-240V
Insulation withstand voltage: >3750V, special insulation treatment ensures safety and reliability
Surface temperature: 180-265°C
Rated power: 50-1000W
Power density: (heating power/water contact area) approximately 4-10W / cm² (at a water temperature of 25°C)
Features
I. Core Features
High-Efficiency Heating: Utilizing PTC (Positive Temperature Coefficient) material, this product offers low resistance at low temperatures and quick startup, enabling rapid heating of flowing liquids with high thermal efficiency.
Automatic Thermostatic Control: Leveraging the inherent properties of the material, the unit automatically reduces power upon reaching the set temperature, maintaining a stable temperature without the need for complex temperature control systems.
On-Demand Heating: The heating power automatically adapts to changes in liquid flow and inlet temperature, increasing power when flow is high and decreasing power when flow is low, achieving intelligent energy conservation.
II. Excellent Safety Features
Inherent Dry-Boil Prevention: The core PTC feature ensures that even in extreme dry-boil conditions with no liquid flow, the temperature remains within a safe range (typically below 220°C), fundamentally eliminating the risk of fire.
No Risk of Scale and Pipe Explosion: Because the operating temperature is strictly limited, far below the temperature at which scale rapidly forms and the extreme load of the metal pipe, this eliminates the risk of pipe explosion associated with traditional heating pipes due to scale accumulation and uneven heat dissipation.
No Open Flame, No Red-Burning: The heating element produces no open flame during operation, nor does it burn red-hot like resistance wire, offering high safety and suitability for flammable and explosive environments.
III. Durability and Reliability
Impact Resistance and Long Life: The PTC ceramic element's inherently stable structure is resistant to shock and vibration. Its controllable operating temperature prevents high-temperature oxidation and degradation, resulting in a service life far exceeding that of traditional electric heating elements.
Strong Adaptability: A variety of housing materials (such as stainless steel, titanium alloy, and special coatings) allow heating of a variety of media, including water, oil, and corrosive chemical liquids.
IV. Structural Design Features
Compact Modular Design: This modular design typically utilizes multiple PTC heating elements combined with aluminum heat dissipation tubes/plates. This compact design offers high power density and facilitates integration into various equipment.
Easy Maintenance: The modular design also simplifies maintenance and replacement.
Application
Fluid PTC liquid heaters have become an ideal choice in many fields. They are widely used in new energy vehicle thermal management systems (passenger compartment heating, battery heating), industrial heaters and hot air curtains, and household appliances (instant hot water dispensers, dishwashers, floor scrubbers for drying and heating). They are a model of efficiency, safety, and intelligence in modern fluid heating solutions.
