A leading carbon-based new materials giant has recently put into use six EPV-670WH water-cooled VSD refrigerated air dryers, which are designed to support its 250kW dual-stage water-cooled PM (permanent magnet motor) VSD air compressor system. 

These dryers deliver stable compressed air for the CVD and thin film preparation processes of core products—silicon-carbon anodes and high-performance carbon fibers. 

This collaboration not only underscores the technical compatibility of VSD refrigerated air dryers in advanced manufacturing, but also contributes to energy conservation and efficiency enhancement in carbon-based material production—with annual electricity savings of over 180,000 CNY.

 

(Photo of User Station)

 

The carbon-based new materials industry demands exceptionally stringent compressed air quality. In silicon-carbon anode CVD processes, even trace moisture triggers silane hydrolysis—creating silica impurities that directly compromise electrode specific capacity and cycling performance. 

During carbon fiber preform oxidation, compressed air dew point fluctuations may reduce fiber strength by over 15%. EPSEA VSD refrigerated air dryer precisely regulates dew point at 7℃and evaporation temperature at 4℃, keeping inlet air moisture within process thresholds. This safeguards consistent product quality from the air source stage.

 

 

VSD technology delivers notable energy savings, especially when meeting strict air demand requirements. Operational data from comparable setups shows a single EPV-670WH refrigerated air dryer—running 8,000 hours yearly—saves 30,664 kWh compared to traditional power frequency models. 

Based on an industrial electricity rate of 1 CNY/kWh, six units cut annual costs by 183,984 CNY total. This efficiency comes from VSD's core strength: When inlet temperature drops from 55°C to 25°C or flow rate falls from 55 m³/min to 15 m³/min, the compressor intelligently adjusts frequency from 90Hz to 30Hz. 

This dynamically matches cooling capacity to heat load—unlike power frequency units, which run at full power nonstop. Notably, in spring, autumn, and winter low-load periods, a single unit's power use drops from its rated 9.1kW to 3.0kW, slashing energy by 67%. Replacing traditional shell-tube power frequency units can further push overall savings over 50% with better pre-cooling efficiency.

 

 

EPSEA VSD refrigerated air dryer delivers ultra-high energy efficiency, stable performance, and eco-friendly operation. Its system uses eco-friendly R513A and R410A refrigerants—aligning with low-carbon trends while ensuring consistent cooling efficiency. 

The enhanced pre-cooling design adopts countercurrent heat exchange with an expanded cooling surface, narrowing temperature differentials to reduce evaporative cooling demand and ease system load.Linked real-time load monitoring tracks target temperatures to gauge load, enabling wide frequency adjustment (30-90Hz, up to 120Hz) and keeping the compressor at optimal frequency for actual heat loads. 

An enlarged air passage boosts flow cross-section, reducing internal resistance and pressure drop—improving gas-liquid separation efficiency while preventing blockages. The non-destructive drainage system features a large-diameter, zero-loss drain with high displacement and anti-clogging design, further reducing air consumption. 

These designs not only deliver strong energy savings and high-purity compressed air but also embody green manufacturing via eco-friendly refrigerants. This builds a dual foundation to meet stringent air source requirements and low-carbon development goals. 

 

 

As the carbon-based new materials industry moves into a higher development stage, silicon-carbon anodes keep expanding their power battery market share, while carbon fiber demand surges in wind, hydrogen, and other renewable energy sectors. 

The industry's dual needs for stable gas supply and energy-efficient production are growing more prominent. EPSEA VSD refrigerated air dryer—with 25%-40% energy savings and precise dew point control—perfectly meets enterprises' "cost reduction + quality enhancement" core needs during capacity expansion.

 Fueled by "dual carbon" policies and industrial upgrading, this innovation has become a key driver for high-end manufacturing's green transformation.