Refractance Window Dryer
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Refractance Window Dryer Manufacturer in India | Continuous Low-Temperature RWD Drying Systems
Genex Tech Industries LLP is a trusted Refractance Window Dryer (RWD) manufacturer in India, supplying advanced low-temperature drying systems for converting high-moisture foods into premium powders and flakes with excellent nutrient retention.
A Refractance Window Dryer is one of the most efficient drying technologies for fruit and vegetable purees, juices, egg products, dairy cultures, nutraceuticals, algae, and heat-sensitive ingredients. Our RWD systems are engineered for continuous operation, hygienic design, high thermal efficiency, and consistent product quality.
High Performance Refractance Window Drying Technology
Refractance Window Drying is a modern-day drying solution widely adopted by global food processors for producing export-grade powders while preserving:
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colour
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aroma
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taste
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proteins and nutrients
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functional properties
Unlike conventional high-temperature dryers, RWD offers gentle drying at low product temperature with fast moisture removal.
What is a Refractance Window Dryer (RWD)?
A Refractance Window Dryer is a continuous drying system where wet product is spread as a thin layer on a moving food-grade film. This film passes over a hot water trough, transferring thermal energy efficiently to the product without exposing it to direct high heat.
The process is ideal for products where nutrient retention and functional performance are critical.
Continuous Refractance Window Dryer
Working Principle of Refractance Window Dryer (Simple Explanation)
The GENEX Refractance Window Drying system consists of:
- a continuous moving film supported by end pulleys
- a hot water trough below the film
- optional cold water section for cooling before discharge
- a stainless steel vapour hood to exhaust moisture
- hot water recirculation system to maintain stable temperature
How the RWD Process Works
- High-moisture puree or liquid product is applied on the film
- Hot water below the film transfers heat efficiently through the film
- Moisture evaporates rapidly while product temperature stays low
- Vapour is removed through the exhaust hood
- Dried sheet/flakes are collected at the outlet
- Product is cooled and ready for milling/packing
A key advantage is the combination of:
- conductive heat transfer
- convective mass transfer
- evaporative cooling above the product layer
This enables fast drying with minimal product damage.
Why Choose Refractance Window Drying Over Conventional Dryers?
Traditional drying methods such as hot air drying or high-temperature drying can:
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reduce nutritional value
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denature proteins
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darken colour
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create cooked flavours
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reduce solubility and functionality
RWD technology is designed to overcome these challenges.
Key Benefits of GENEX Refractance Window Dryer
Low Temperature Drying – protects sensitive nutrients and proteins High Nutrient Retention – better than many conventional drying methods Fast Drying Time – ideal for high moisture products Energy Efficient – hot water recirculation improves thermal efficiency Continuous Operation – stable production and uniform output Hygienic Design – food-grade construction for safe processing Minimal Cross Contamination Risk – controlled drying environment Excellent Powder Quality – better colour, taste and aroma retention Scalable – pilot to industrial capacity designs available
Applications of Refractance Window Dryer (RWD)
Genex RWD systems are used across food, nutraceutical, pharma, and specialty industries.
Fruit & Vegetable Processing
- fruit and vegetable purees
- single-strength purees
- concentrated purees
- chunky purees
- seed pulp and juice residues
- sliced fruits and vegetables
Juices & Beverage Ingredients
- juice concentrates
- beverage mixes
- natural flavours and extracts
Meat, Poultry & Seafood
- meat broths and purees
- poultry broths
- fish broths and purees
Egg Products
- whole egg powder
- egg white powder (albumen)
- egg yolk powder
- functional egg blends
Dairy & Cultures
- dairy cultures
- milk-based ingredients
- fermentation products
Cereals, Grains & Starches
- cereal slurries
- starch-based products
- functional grain concentrates
Nutraceutical & Herbal
- protein powders
- nutraceutical ingredients
- botanical extracts
- functional health powders
Pharmaceutical & Specialty
- pharma-grade materials (custom hygienic design)
- algae and microalgae products
- fine chemicals
Key Features of GENEX Continuous Refractance Window Dryer
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continuous moving film drying system
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hot water trough with recirculation heating
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optional cooling section before discharge
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stainless steel vapour hood for moisture removal
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adjustable belt speed for residence time control
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uniform product spreading system
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SS304 / SS316 contact parts (as required)
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easy cleaning and hygienic access
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automation options for temperature and speed control
New Continuous Refractance Window Dryer
Typical Technical Specifications (Customisable)
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Type: continuous refractance window dryer
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Heating: hot water system with recirculation
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Operation: continuous belt film drying
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Product form: puree, slurry, liquid, thin layer feed
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Control: manual / PLC automation
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Construction: SS304 / SS316 / hygienic design
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Capacity: pilot scale to industrial production
Why Choose Genex Tech Industries LLP as Your RWD Manufacturer?
Genex Tech Industries LLP is a trusted manufacturer of advanced drying systems and turnkey food processing machinery.
40+ years of engineering and manufacturing expertise specialised drying technology knowledge proven installations across India and overseas markets export-ready construction and quality control strong after-sales support and spare availability turnkey project capability for complete processing plants
Get Refractance Window Dryer Price & Technical Consultation
If you are planning a new RWD project for fruit puree, egg powder, dairy ingredients, nutraceuticals, or heat-sensitive food products, our engineering team can support you with:
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product evaluation and drying method selection
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capacity planning and layout
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technical specifications and quotation
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turnkey processing plant integration
Email: mktg@foodtechprojects.com
Website: www.foodtechprojects.com
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