Cork Stabilization Greenhouse with Solar Ventilation
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Solution Overview
Problem
The traditional cork stabilization process is vulnerable to contamination and microbiological activity, particularly the development of microorganisms that produce 2,4,6-Trichloroanisole (TCA), leading to organoleptic deviations in cork stoppers.
Innovation Solution
A stabilization greenhouse for cork that controls temperature and humidity, incorporates forced ventilation, and is powered by renewable energies, creating a controlled environment that inhibits microbiological development and reduces TCA production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cork planks are stabilized in open air under traditional conditions, then the drying process occurs naturally, but microorganisms develop and produce TCA leading to quality losses
Solution Approach 1:
The patent creates a controlled environment within the greenhouse that limits microbiological activity through regulated temperature and humidity conditions. The greenhouse structure with controlled ventilation and solar heating maintains conditions that inhibit TCA-producing fungi, effectively creating a protective atmosphere for cork stabilization.
Solution Approach 2:
The patent applies parameter changes by controlling temperature and humidity levels within the greenhouse. Solar heating raises temperatures above 20°C while the controlled environment maintains humidity below 70%, creating conditions that suppress microbiological activity and TCA formation while still allowing gradual cork drying.
2Object-affected harmful factors
If cork planks are protected from rainfall using zinc sheets or plastic tarps, then contamination is reduced, but moisture is retained inside the pile making evaporation harder
Solution Approach 1:
The greenhouse provides a controlled environment that protects cork from rainwater contamination while simultaneously managing moisture through active ventilation and temperature control, avoiding the moisture retention problem of traditional tarp coverage.
Solution Approach 2:
The greenhouse enables continuous drying action through solar heating and forced ventilation. The system maintains a continuous temperature and air flow that promotes constant evaporation, preventing moisture buildup that would occur with static tarp protection.
3Strength
If cork planks are stabilized at low temperature and moderate humidity, then mechanical properties are maintained, but microbiological activity increases favouring TCA production
Solution Approach 1:
The patent changes the temperature and humidity parameters within specific ranges: temperature above 20°C (using solar heating) and humidity below 70% (through controlled ventilation). These parameter changes suppress TCA-producing microorganisms while maintaining cork structural integrity through gradual moisture loss.
Solution Approach 2:
The controlled greenhouse environment creates conditions that are inert to TCA-producing microorganisms by maintaining temperature and humidity levels outside their optimal growth range, while still allowing the cork to stabilize and maintain mechanical properties.
4Ease of manufacture
If natural stabilization is performed in the cork oak forest or parks, then the process occurs under traditional conditions, but contamination with soil, dust, insects and microorganisms increases
Solution Approach 1:
The greenhouse provides a controlled, protected environment that isolates cork planks from external contaminants such as soil, dust, and insects while maintaining conditions suitable for stabilization. This eliminates the contamination risks of outdoor placement while preserving the essential drying and stress-relief functions.
Solution Approach 2:
The greenhouse acts as an intermediary structure between the outdoor environment and the cork planks. It provides protection from harmful external elements while allowing the stabilization process to proceed through controlled air exchange and solar heating.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The controlled environment enhances the drying and stabilization process, reduces contamination, and significantly improves the quality of cork stoppers by minimizing TCA-related issues, while also being environmentally sustainable.
Implementation Method 1
The stabilization greenhouse for cork fosters the drying of cork through the greenhouse effect, which results from the solar radiation which passes through its walls.
Implementation Method 2
This increase in the driving force for the diffusion/convection of water vapour from the surface of the cork planks to the air inside the greenhouse promotes the evaporation rate of the water from the cork
Implementation Method 3
the humid air inside the greenhouse being removed by forced ventilation, whenever the humidity levels so warrant
Data Source
Figure 1
AI summary
The present invention falls within the cork industry, more specifically in the cork preparation subsector, and refers to a greenhouse (1) for stabilization of cork planks for subsequent use in the cork stopper industry. Thus, the object of the present invention is a cork stabilization greenhouse (1) comprising a fan (2), two means of air intake (3) inside the greenhouse (1), two cabinets (7) (8) intended to house the elements of the systems of measurement and control, composed by thermocouples (4), humidity sensors (5) and two solar panels (6) for photovoltaic energy production and storage. A further object of the present invention is a method of stabilization through the steps of a) placing the cork planks inside the greenhouse (1); b) raising the temperature inside the greenhouse (1) to a value between 50°C and 70°C; c) recirculating the air; and d) stabilizing the cork for a period of 2 to 5 months.