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Design and Optimization Strategies of a High-Performance Vented Box

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Development of a Controlled-Ventilation Box for Modified-Atmosphere Storage of Fresh Produce.

Nandita Keshri^1,2, Ingo Truppel¹, Manfred Linke¹

¹Department of Horticultural Engineering, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469 Potsdam, Germany.

Foods (Basel, Switzerland)

|December 24, 2021

Summary

This study introduces a controlled-ventilated box to maintain optimal gas levels for fresh produce during transport. An air blower significantly enhanced gas exchange, improving produce storage and reducing spoilage.

Keywords:

O2 and CO2 concentration forced airflow mass transfer coefficient metal tube real-time wireless sensor system

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Area of Science:

Agricultural Engineering
Food Science
Postharvest Technology

Background:

Maintaining optimal atmospheric conditions is crucial for fresh produce quality during supply chain transit.
Temperature fluctuations and inadequate ventilation can lead to significant produce spoilage.

Purpose of the Study:

To demonstrate and test a controlled-ventilated box for bulk fresh produce transportation.
To investigate the impact of an air blower on gas exchange within the storage system.

Main Methods:

A novel container design with a miniature blower and a metal tube for controlled gas exchange was developed.
Mass transfer coefficients were measured under modified atmosphere conditions (15% CO2, 5% O2) at 10°C.
Storage trials with cherries were conducted at variable temperatures (10°C and 20°C).

Main Results:

The addition of an air blower increased the mass transfer coefficient by over 100 times.
The system effectively regulated in-package atmosphere by balancing produce respiration and fresh air influx.
Successful cherry storage trials demonstrated the system's viability under fluctuating temperatures.

Conclusions:

The controlled-ventilated box is a promising solution for improving fresh produce storage during transportation.
Real-time adjustment of gas concentrations via controlled ventilation enhances produce quality and extends shelf life.
This technology offers significant potential for reducing postharvest losses in the supply chain.