High-temperature dehumidification technology, once viewed as a traditional industrial tool, is quietly evolving into a vital 

bridge connecting traditional manufacturing with digital infrastructure. From timber drying to lithium battery production, 

from pharmaceutical manufacturing to hyperscale data centers, this technology is playing an irreplaceable role across seemingly 

unrelated fields due to the universality and adaptability of its core principles.

01 Technical Principles and Core Components

The foundational principle of high-temperature dehumidification technology lies in the interdisciplinary application of 

thermodynamics and mass transfer. Its core mechanism involves elevating air temperature to reduce relative humidity, 

followed by moisture removal through condensation, adsorption, or other methods.

This process primarily unfolds in two stages: thermal dehumidification and condensation dehydration. Thermal dehumidification 

leverages the property that hot air can carry more water vapor; condensation dehydration achieves moisture separation by 

cooling the air to induce condensation.

Key components of modern high-temperature dehumidification systems include heat exchangers, fans, heating devices, 

and control systems. The use of high-temperature resistant materials represents a critical technological breakthrough—

such as employing stainless steel welded frames to enhance equipment durability and applying specialized coatings to 

protect critical components from high-temperature corrosion.

The introduction of precision control systems has revolutionized high-temperature dehumidification technology. 

Microcomputer PID control systems achieve temperature accuracy within ±0.1%, while intelligent control systems 

monitor humidity and temperature in real time and automatically diagnose malfunctions.

02 Deep Integration into Traditional Industries

High-temperature dehumidification technology has deepened its application in traditional industries, enhancing 

both production efficiency and product quality.

In the wood industry, high-temperature dehumidification technology has evolved from conventional drying to combined 

drying. China's conventional wood drying equipment design has reached the technical standards of developed countries.

The GRCT combined drying process integrates high-temperature heat pump dehumidification with solar energy, delivering 

significant energy savings and proving particularly suitable for drying hardwoods. Dehumidification drying employs a 

closed-loop system to remove moisture from drying chambers through refrigeration-based dehydration, achieving 

remarkable energy efficiency.

In food processing, dehumidification technology spans the entire production-to-sales process. Different food types demand 

varying humidity levels: fruits and vegetables require 85%–95% RH, meat and dairy products need 75%–85% RH, while bread 

and pastries necessitate environments below 60% RH.

The synergistic heating and dehumidifying dryer developed in 2023 employs a semiconductor cooling element as its core 

component. The hot end heats air for drying, while the cold end condenses water vapor to remove moisture, forming a 

closed-loop system specifically designed for drying agricultural products like shiitake mushrooms.

The pharmaceutical and chemical industries impose the most stringent requirements on dehumidification technology. 

The new-generation G4 desiccant wheel system achieves wheel regeneration at just 95°C, significantly reducing energy 

consumption compared to traditional technologies.

These systems must not only provide extremely dry environments but also comply with FDA and CGMP regulations, effectively 

suppressing bacterial and fungal growth to ensure cleanliness and safety throughout pharmaceutical processes.

Table: Key Temperature and Humidity Control Requirements Across Different Industrial Sectors

03 Extension of Technology into Digital Infrastructure

With the advent of the digital era, high-temperature dehumidification technology has found new application grounds—

modern technological infrastructure, particularly data centers and new energy production facilities.

In data centers, temperature and humidity control directly impacts server stability and energy efficiency. According to data 

from the Ministry of Industry and Information Technology, the number of standard racks in operational computing centers 

exceeded 8.8 million in 2024, with cabinet power density trending toward higher concentrations. Traditional refrigeration 

technologies struggle to meet extreme energy efficiency demands.

The Taiyuan National Supercomputing Center employs full immersion phase-change liquid cooling, submerging servers in 

an electronic fluorinated liquid with a boiling point around 50°C. This achieves highly efficient constant-temperature cooling, 

reducing the core computer room's Power Usage Effectiveness (PUE) to 1.04.

ZTE's integrated “air-liquid-evaporation” multi-technology cooling system combines modular air walls, indirect evaporative 

cooling air conditioners, and liquid cooling systems to comprehensively address diverse data center needs from edge nodes 

to core hubs.

Lithium battery production represents another frontier for high-temperature dehumidification technology. Shanghai Jiao 

Tong University's “low dew point solid adsorption high-efficiency dehumidification technology” can dry air to one-thousandth 

of desert humidity levels, achieving dew points as low as -60°C.

At CATL's lithium battery workshops, this technology maintains air dew points below -20°C, with moisture content under 0.01 

grams per kilogram of air. It employs molecular sieve materials embedded with halide salts to enhance moisture absorption 

and utilizes a “special process” combining electrostatic spraying with sol-gel deposition to overcome global challenges like 

material shedding and rapid performance degradation.