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120°C Heat Pump Hot Air System
High-Temperature Heat Recovery for Energy-Efficient Desiccant Rotary Drying
The 120°C Heat Pump Hot Air System is designed to replace conventional electrical heaters used in desiccant rotary dryers. By using heat pump technology, the system delivers high-temperature process air while simultaneously producing chilled water, enabling efficient energy recovery and significantly reducing operating costs.
With a combined coefficient of performance (COP) of up to 3.5, the system can provide substantially more useful thermal energy than the electrical power it consumes. This makes it an effective solution for manufacturers seeking to reduce energy consumption, lower carbon emissions, and improve the overall efficiency of industrial drying operations.
The technology has already been adopted by leading companies, including BYD, EVE, and Gotion High-tech, demonstrating its suitability for demanding battery and advanced manufacturing applications.
Key Features
High-Temperature Hot Air up to 120°C
The system supplies process air at temperatures of up to 120°C, making it suitable for desiccant rotary dryers and other high-temperature industrial drying processes. It provides stable and controllable heating for consistent moisture removal and reliable product quality.
Direct Replacement for Electrical Heaters
The heat pump hot air system can replace traditional electric resistance heaters in compatible desiccant rotary dryer systems. Compared with direct electric heating, heat pump operation can deliver greater heating capacity per unit of electricity consumed, helping reduce energy use and operating expenses.
Simultaneous Hot Air and Chilled Water Production
In addition to producing high-temperature hot air, the system can generate chilled water at the same time. This combined operating mode allows the system to utilize both the heating and cooling sides of the refrigeration cycle, improving total energy utilization and supporting integrated plant thermal management.
Combined COP up to 3.5
The system achieves a combined COP of up to 3.5 under suitable operating conditions. This performance reflects the combined value of the hot air and chilled water outputs. Actual COP may vary depending on inlet and outlet temperatures, ambient conditions, airflow, water temperature requirements, and system configuration.
Significant Energy Savings
By recovering and transferring heat instead of converting electricity directly into heat, the system can reduce the power demand associated with drying operations. The simultaneous production of chilled water further improves energy efficiency and may reduce the need for separate cooling equipment.
Stable Process Temperature
Advanced control technology helps maintain stable hot-air temperatures and operating conditions. This supports uniform drying performance, improves process consistency, and helps protect temperature-sensitive materials from overheating.
Industrial-Grade Design
The system is designed for continuous industrial operation and can be integrated with existing desiccant rotary dryers, production lines, and factory utility systems. Its configuration can be adapted to meet specific process air, chilled water, temperature, and capacity requirements.
Operating Principle
The 120°C Heat Pump Hot Air System captures low-grade heat from an available source and upgrades it through a high-efficiency refrigeration cycle. The upgraded heat is transferred to the process air, producing hot air for the desiccant rotary dryer.
At the same time, the system provides chilled water through the cooling side of the heat pump cycle. This dual-output operation allows the system to satisfy both heating and cooling requirements simultaneously, maximizing energy utilization and improving the overall COP.
Typical Applications
The system is suitable for applications requiring high-temperature process air, including:
- Desiccant rotary dryers
- Battery electrode and battery-material drying
- Lithium-ion battery manufacturing
- New energy and energy-storage production
- Chemical and specialty-material processing
- Pharmaceutical and fine-chemical drying
- Food and agricultural-product drying
- Industrial dehumidification systems
- Processes requiring simultaneous heating and chilled water
Benefits for Battery Manufacturing
Stable and efficient drying is essential in battery production. The 120°C Heat Pump Hot Air System can support battery manufacturers by providing:
- Consistent high-temperature drying air
- Reduced reliance on electric resistance heating
- Lower production-line energy consumption
- Improved thermal management
- Simultaneous chilled-water supply for plant cooling needs
- Reduced carbon emissions and operating costs
- Improved integration with automated manufacturing systems
The system has already been adopted by BYD, EVE, and Gotion High-tech, supporting its application in advanced battery and new-energy manufacturing environments.
Main Advantages
- Process air temperature of up to 120°C
- Replaces conventional electric heaters in compatible systems
- Simultaneous hot-air heating and chilled-water production
- Combined COP of up to 3.5
- Lower energy consumption than direct electric heating
- Reduced operating costs and carbon emissions
- Stable, controllable process temperatures
- Suitable for continuous industrial operation
- Compatible with desiccant rotary dryers
- Proven adoption by BYD, EVE, and Gotion High-tech
For facilities operating desiccant rotary dryers, the system offers a practical path toward lower-energy production without compromising process temperature, drying performance, or operational reliability.
