High-Temperature Heat Pump Drying Air Heater for Printing

The heat generated by the printing high-temperature heat pump drying air heater mainly comes from the sensible heat and latent heat contained in the exhaust air of the printing machine. Only power consumption for the heat pump compressor is required as input energy. The heat pump features the advantage of producing massive heat with low power input. Humidity control is convenient, and the drying temperature of each color group of the printing press can be adjusted automatically. The printing heat pump unit can realize combined cold and heat supply during operation: while generating heat, it recovers the cold air produced by the heat pump system and delivers it to the workshop to lower the ambient temperature. It also reduces solvent volatilization. In conventional workshops, high ambient temperature causes massive solvent volatilization and substantial material waste.

## 1. Overview of Traditional Printing Drying Industry

1. For printing processes with solvent-based ink and water-based ink, hot-air evaporation drying is widely adopted. This method consumes huge amounts of electric power, greatly increasing operational costs for enterprises. Upgrading drying technology to save energy and reduce consumption is urgently needed.

2. Electric heating drying equipment requires extremely large installed power capacity. Adding new equipment often needs power capacity expansion, which involves complicated and time-consuming procedures.

3. Printing and packaging workshops suffer from strong odor and high temperature. These poor working conditions lead to employee complaints and unstable mood, which negatively affects production quality.

## 2. Features of Printing High-Temperature Heat Pump Drying Air Heater

1. Heat recycling: The heat generated by the printing high-temperature heat pump drying air heater mainly comes from the sensible heat and latent heat in printing machine exhaust. Only compressor power input is required. A heat pump can generate abundant heat with minimal power consumption.

2. Convenient humidity regulation: It meets requirements of different printing stages. Parameters only need to be set once according to production processes.

3. Reduced solvent volatilization: High temperatures in traditional workshops trigger heavy solvent volatilization and material waste, which this unit effectively mitigates.

4. Flexible control: Different from steam, oil-fired or coal-fired heating systems, this equipment needs no dedicated on-site operator. It delivers flexible and reliable control.

5. Eco-friendly: Green printing is promoted globally. New workshop plans restrict high-emission equipment. The printing heat pump is an ideal solution. Driven by small electric power, it generates high-temperature heat with drastically reduced energy consumption. Zero emissions during operation. It eliminates the annual boiler inspection procedures and cuts operational costs.

6. Cost-saving & energy-efficient: Compared with traditional electric heaters, oil-fired boilers and gas-fired boilers, this unit achieves remarkable energy-saving rates.