Practical Case: Guangdong Shantou Vocational and Technical College’s digital campus 3.0 project adopted precision air conditioners with corrugated PTC heaters for low-temperature heat compensation. The 6kW corrugated PTC modules (corrugated pitch 6mm) maintained the server room temperature at 23℃±1℃, with airflow resistance reduced by 12% compared to traditional heaters, matching the 9000m³/h air volume of the air conditioning system .
Key Parameters: Power 1500W–2500W, voltage 220V AC, corrugated pitch 5mm–8mm.
Washing Machine Drying Systems: The corrugated PTC elements provide uniform heat for the air circulation drying system, avoiding high-temperature damage to fabrics while improving drying efficiency.
Practical Case: Haier Langjing X11 washing machine series adopted innovative corrugated PTC net-filter intelligent drying technology. The 1200W corrugated PTC modules (corrugated height 4mm) matched 3D perspective drying technology, increasing drying efficiency by 30% compared to traditional flat PTC. The uniform airflow generated by the corrugated structure prevented uneven fabric drying, and the dual-vortex lint filtering system ensured long-term stable operation . Leader’s triple-drum washing machine also used corrugated PTC soft drying technology to solve the problem of "unable to dry in rainy season", with the corrugated surface reducing lint adhesion by 40% .
Key Parameters: Power 800W–1500W, corrugated height 3mm–5mm, temperature control range 40℃–70℃.
2. Commercial Air Treatment Systems
Supermarket Fresh Air Heaters: Installed in the fresh air circulation system of supermarkets, the corrugated PTC elements preheat the cold outdoor air. The permeable structure reduces airflow resistance (energy consumption of fans is reduced by 10%), and the uniform heating ensures that the temperature of the fresh air outlet is stable at 20℃–22℃.
Practical Case: A large supermarket chain in East China adopted 4500W corrugated PTC fresh air heaters (element size 400mm×200mm×30mm) in 20+ stores. The corrugated density of 12 waves/100mm ensured that the fresh air temperature difference at multiple outlets was ≤1.5℃, and the fan energy consumption was reduced by 11% annually, saving 28,000 kWh of electricity per store .
Key Parameters: Power 3000W–5000W, voltage 380V AC, element size 400mm×200mm×30mm (corrugated type).
Commercial Dehumidifiers: The corrugated PTC elements are used in the reheat section of the dehumidifier. After the moist air is cooled and dehumidified, it is reheated by the corrugated PTC to room temperature (23℃±1℃), avoiding the problem of "cold wind blowing" from traditional dehumidifiers.
Key Parameters: Power 1200W–1800W, corrugated material aluminum-plated ceramic, service life ≥60,000 hours.
3. Industrial Low-Temperature Drying Equipment
Textile Fabric Drying Machines: In the air circulation drying system, corrugated PTC elements heat the circulating air to 40℃–60℃. The large heat exchange area ensures that the air temperature is uniform (temperature difference ≤2℃), preventing fabric shrinkage caused by local overheating.
Key Parameters: Power 5000W–8000W (combined modules), voltage 380V AC, corrugated density 10–15 waves/100mm.
Film Developing Machine Drying Systems: Corrugated PTC elements cooperate with conical air ducts to provide uniform hot air, ensuring consistent film drying quality without damage.
Practical Case: A domestic photography equipment manufacturer’s film developing machine adopted 800W corrugated PTC heating elements (corrugated surface smoothness Ra≤1.2μm) in the drying system. The hot air generated by the corrugated PTC was evenly distributed through conical air ducts, with the film surface temperature difference ≤0.8℃, reducing film damage rate from 3% to 0.5% .
Key Parameters: Power 500W–1200W, temperature control precision ±1℃, corrugated pitch 4mm–7mm.
New Energy Vehicle (NEV) Cabin Heaters: Corrugated PTC elements are used in the NEV’s air conditioning circulation system. The corrugated structure improves heat exchange efficiency, reducing the vehicle’s heating energy consumption by 15%–20% (extending the driving range by 30–50km). It works stably at -30℃–80℃.
Practical Case: Zhenjiang Oriental Electric Heating Technology Co., Ltd. pioneered the combination technology of PTC heating elements and aluminum corrugated strips for NEV heaters. Its 6kW corrugated PTC heater (weight reduced from 2.6kg to 2kg) achieved a thermal efficiency of over 95%, and has become a core supplier for BYD, NIO, and XPeng . Huagong Gaoli Electronics won a $100 million order from a well-known European automaker by optimizing the corrugated PTC structure: the heater was "slimmed down" by 25% while maintaining power, and could work stably at -40℃, adapting to 12 models simultaneously .
Key Parameters: Power 2.5kW–4kW, voltage 48V DC, element size 200mm×120mm×25mm (corrugated type).
Automotive Battery Thermal Management: The corrugated PTC elements are integrated into the battery pack’s air circulation system. When the temperature is low (-20℃), they heat the circulating air to 10℃–15℃, ensuring the battery’s charging and discharging efficiency (avoiding capacity loss of ≤10%).
Practical Case: Huagong Gaoli’s 800V platform corrugated PTC heater (power 800W) can heat the battery pack from -40℃ to 15℃ in 15 minutes, increasing the fast charging speed by 4 times and reducing the battery capacity loss to ≤5% in low temperature . The product’s IP6K9K corrosion-resistant corrugated surface adapts to the harsh working environment of the battery pack .
Key Parameters: Power 500W–1000W, voltage 12V/24V DC, corrugated corrosion resistance grade IP6K9K.
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