Radio frequency dryer LTRF

dry aircontinuousfor the textile industry

Overview
The LTRF (Low Temperature Radio Frequency) series dryers are engineered for low-temperature drying of loose textile products. They derive from the standard RF series and add air suction and blowing compartments located beneath the conveyor belt. A controlled airflow, often recovered from the triode cooling system, is forced through the product while exposed to the RF field, enabling drying temperatures that normally do not exceed 60-70°C. The through-flow of air enhances energy efficiency and reduces drying costs.

Features

• Low-temperature RF drying (LTRF) enabling process temperatures around 60-70°C
• Additional suction and blowing compartments under the conveyor belt
• Medium-head centrifugal fans in the forced-air compartments
• Controlled airflow typically recovered from the triode cooling system
• Improved energy efficiency compared with standard RF dryers
• Energy savings (LTRF): typically 15–30% vs standard RF
• RFA/S series combines RFA and LTRF principles (forced air plus temperature-controlled tunnel)
• RFA/S benefits: improved product quality and energy efficiency; drying cost savings up to 35% vs standard RF
• Derived from proven RF series technology with global industrial installations since the mid-1990s

Applications

• Loose cotton stock
• Wool and cashmere loose stock
• Fine wool tops and slivers
• Acrylic tow
• Silk hanks
• Cashmere, lambswool and other fine wool yarns in hank form
• Wool and nylon jumbo hanks for carpets
• Cotton, mercerised cotton and rayon yarns for knitting, sewing and embroidery

Notes
Both LTRF and RFA/S series have been installed worldwide since the mid-1990s and have proven effective across a wide range of textile products.

Technical specifications

• Technology: Low Temperature Radio Frequency (LTRF) and combined RFA/S (RFA + LTRF)
• Process temperature: normally does not exceed 60–70°C (LTRF)
• Air management: additional suction/blowing compartments under conveyor with medium-head centrifugal fans
• Air source: typically recovered from the triode cooling system
• Energy savings (LTRF): approximately 15–30% vs standard RF
• Energy savings (RFA/S): up to 35% vs standard RF
• Suitable for a wide range of fibers and yarn forms (see Applications)
• Proven installations in industrial use since mid-1990s