Hay Drying System with Recirculating Air and Dehumidifier
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Solution Overview
Problem
Existing hay drying methods face high energy consumption, making it economically unsustainable for large-scale drying operations.
Innovation Solution
The system utilizes solar energy to heat air drawn from outside, which is dehumidified and circulated through ventilation boxes, with a switching flap controlling air flow to optimize temperature and humidity, and includes a programmable logic controller for efficient fan and dehumidifier operation, reducing the need for additional heating sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air is drawn from outside and heated with additional heating sources to maintain drying temperature, then drying efficiency is improved, but energy consumption increases significantly
Solution Approach 1:
The invention converts the harmful effect of hot exhaust air (which would normally be wasted) into a beneficial resource by recirculating it back into the drying chamber. This回收利用 of thermal energy maintains drying temperature without requiring additional heating, thus improving drying efficiency while reducing energy consumption
Solution Approach 2:
The system recovers thermal energy from the exhaust air that would otherwise be discarded. The exhaust air is redirected through a recirculation path back to the drying chamber, allowing the thermal energy to be reused for maintaining drying temperature, thereby reducing the need for additional heating energy
2Productivity
If large volumes of air are used for drying to accelerate the process, then drying speed is improved, but the process becomes uneconomical
Solution Approach 1:
The invention implements continuous recirculation of dried air back into the drying chamber, ensuring that the useful thermal energy continues to act on the material being dried. This continuous action maintains high drying efficiency without requiring proportionally large volumes of fresh air, improving economic viability
Solution Approach 2:
The drying air serves multiple functions: it removes moisture from the material and simultaneously its thermal energy is recovered and reused for heating. This multi-functionality allows the system to maintain high drying speeds without the economic penalty of processing large volumes of air through additional heating
3Use of energy by moving object
If a closed air circuit is used to reduce energy consumption, then energy efficiency is improved, but air temperature control becomes difficult
Solution Approach 1:
The system dynamically adjusts the balance between recirculating dried air and introducing fresh air based on temperature requirements. The control system modifies the recirculation ratio in real-time, allowing the closed circuit to maintain energy efficiency while achieving precise temperature control through variable air mixing
4Temperature
If fresh air is continuously introduced to prevent overheating, then temperature control is improved, but energy consumption increases
Solution Approach 1:
Instead of continuously introducing cold fresh air that would require reheating, the system continuously recirculates pre-heated dried air. This continuous action maintains temperature control while avoiding the energy penalty of heating large volumes of fresh air
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
This approach significantly reduces energy consumption while maintaining high drying efficiency, allowing for faster and more economical drying of large quantities of hay.
Implementation Method 1
the drawn-in air can be at least partially supplied to a dehumidifier in order to dehumidify the air
Data Source
Figure 1~2
AI summary
Device for drying material (1), comprising a ventilation box (2) for receiving the material (1), wherein the ventilation box (2) is covered with a roof (3), the device further comprising at least one fan (4) through which air can be drawn in, wherein the drawn-in air can be supplied at least partially to a dehumidifier (5), and wherein, by means of the at least one fan (4), the air can finally be blown through the ventilation box (2) from an initial region (15) to an end region (16) of the ventilation box (2), wherein a switching flap (6) is provided which can be moved from a first position (7) to a second position (8), wherein in the first position (7) the air can only be drawn in from the ventilation box (2) by the at least one fan (4), and wherein in the second position (8) the air can be drawn in at least partially from outside the ventilation box (2).According to the invention, several ventilation boxes are provided.