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Hybrid Tunnel Dryer 

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Introduction

The Hybrid Tunnel Dryer is a semi-continuous drying system in which product loaded on trolleys or trays moves slowly through a long insulated tunnel while conditioned air flows over it. Because the trolleys advance in stages from the wet-product entrance to the dry-product exit, the tunnel can run around the clock with predictable throughput and a stable drying profile. The hybrid concept lets the tunnel draw heat from more than one source, such as steam, biomass-fired hot air, solar-assisted heating or a heat pump, backed up by electric heating, so that temperature and humidity remain steady regardless of weather or fuel availability. This makes the tunnel dryer a favourite where large quantities of similar products, from fruit and vegetable slices to ceramics and timber, must be dried gently, uniformly and at low cost per kilogram.

Why Choose Kerone Hybrid Tunnel Dryer

A tunnel dryer is only as good as its air management, so Kerone puts careful thought into the length, cross-section, airflow direction and zoning of each tunnel. We study your product’s drying curve, then divide the tunnel into temperature and humidity zones, set recirculation and fresh-air ratios, and select the fans and heat exchangers accordingly. Kerone designs trolleys, tray stacks and loading systems that fit your handling routine and minimise labour. Our engineers can combine local energy options, such as biomass, steam, waste heat or heat pumps, to cut your operating cost, and can design the structure on-site as modular insulated panels or civil construction. Delivered with automation, humidity sensors and operator training, a Kerone tunnel dryer provides steady quality and long, trouble-free service for food, agro and industrial processors.

Types and Features of Hybrid Tunnel Dryer

Kerone builds Hybrid Tunnel Dryers in co-current, counter-current and cross-flow airflow arrangements, each suited to different products and moisture-removal needs. Counter-current tunnels deliver low final moisture efficiently, co-current tunnels protect delicate products during the high-moisture stage, and cross-flow tunnels give the most even exposure for thick loads. Trolley-based, conveyor-assisted and rack-based versions are available, as are multi-zone designs with independent control of each section. Features commonly include insulated modular panels, recirculation fans, heat exchangers or heat pump modules, motorised dampers, trolley rails or pushing systems, and a PLC-based control panel with humidity and temperature sensors. Capacities range from compact units for small processors to large tunnels for continuous industrial output.

Key Features

  • Semi-continuous trolley movement that allows steady, around-the-clock production
  • Hybrid heating, such as biomass, steam, solar or heat pump with electric backup, for stable temperature at lower cost
  • Multi-zone design with independent temperature and humidity control for each section
  • Choice of co-current, counter-current or cross-flow air movement to suit the product
  • Modular insulated panels that reduce heat loss and speed up installation
  • Humidity and temperature sensors linked to motorised dampers for automatic air exchange
  • Customised trolleys and trays for easy loading, unloading and cleaning
  • PLC automation that records process data and supports repeatable results

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Future-Ready Engineering Driven by AI & IoT

Our advanced AI, ML, and IoT technologies, this solution delivers smarter automation, real-time insights, and predictive intelligence to enhance efficiency and drive future-ready growth.

Real-Time Monitoring & Control

Continuous tracking of process parameters with instant adjustments.

Predictive Maintenance

Intelligent fault detection to prevent failures before they occur.

Adaptive Process Optimization

Dynamic tuning of operations for maximum output and efficiency.

Cloud Dashboards & Analytics

Unified access to real-time insights and performance trends.

Energy & Resource Savings

Smarter utilization of energy to cut costs and reduce waste.

Secure IoT Connectivity

Encrypted data flow with seamless integration across plant systems.

Applications of Hybrid Tunnel Dryer

Kerone’s Hybrid Tunnel Dryers are extensively used in industries that dry large volumes of similar products on a regular schedule. Typical applications include:
    • Dehydration of fruits, vegetables, herbs, mushrooms and spices
    • Drying of fish, meat strips and other protein-based products under controlled conditions
    • Drying of pasta, noodles, snacks and bakery items
    • Conditioning of ceramics, bricks, tiles and clay-based products
    • Drying of timber, bamboo and wood-based materials
    • Drying of herbal, tea and agro-processing products on trays or trolleys
The Kerone Hybrid Tunnel Dryer is a practical answer for processors who want large-scale, consistent drying with controlled energy use. Its zoned airflow, trolley-based movement and flexible hybrid heating keep quality uniform while lowering operating costs. With strong engineering, custom design and reliable after-sales service from Kerone, it fits easily into food, agro, ceramic and wood processing lines. Send us your product, daily output and moisture targets, and we will design a tunnel dryer that matches your production plan.

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Frequently Asked Questions (FAQ)

  • It is a long insulated chamber through which trolleys or trays of product move slowly while conditioned air dries them, with heat supplied from two or more energy sources.

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Hybrid & Combination Drying

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