Dehumidification system
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Solution Overview
Problem
Conventional dehumidification systems for maintaining low dew points in dry rooms are inefficient in energy use due to high power consumption, as they dehumidify outdoor air with a higher dew point temperature, leading to excessive moisture absorption and energy wastage.
Innovation Solution
A dehumidification system with a dehumidification rotor and a desiccant air conditioner, featuring separate closed-loop pipelines for air circulation, where the desiccant air conditioner processes outdoor air independently to reduce moisture load on the dehumidification rotor, thereby minimizing electric power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If outdoor air is dehumidified by condensation in the conventional system, then the outdoor air can be mixed with indoor air, but the dew point temperature remains high requiring excessive energy for further dehumidification
Solution Approach 1:
The system divides the air dehumidification process into two independent loops: a first loop for indoor air dehumidification and a second loop for outdoor air dehumidification. The outdoor air is dehumidified separately in the second loop before being supplied to the first loop, preventing the need to dehumidify high-moisture mixed air in the first loop, thus reducing energy consumption.
Solution Approach 2:
The second loop acts as an intermediary system that pre-processes outdoor air by dehumidifying it separately. This intermediary loop reduces the moisture load on the first loop, allowing the main dehumidification system to operate more efficiently with lower energy consumption.
2Device complexity
If a single air circulation loop is used to dehumidify both indoor and outdoor air, then the system structure is simple, but the energy efficiency is poor due to high moisture load
Solution Approach 1:
The air circulation system is segmented into two separate loops: the first loop handles indoor air dehumidification while the second loop handles outdoor air dehumidification. This segmentation allows each loop to be optimized for its specific function, with the second loop pre-processing outdoor air to reduce the energy burden on the first loop.
Solution Approach 2:
The system changes the operational parameters of outdoor air processing by dehumidifying it separately in the second loop before it enters the first loop. This parameter change (pre-dehumidification of outdoor air) reduces the overall moisture load on the main dehumidification system, improving energy efficiency.
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
Significantly reduces power consumption and improves energy utilization efficiency by separating air circulation loops and processing outdoor air before it enters the main dehumidification loop, resulting in lower dew point temperatures and reduced moisture absorption.
Implementation Method 1
a dehumidification rotor (1) having at least an absorption zone (1a)
Implementation Method 2
dehumidified by condensation at the cooler
Data Source
AI summary
A dehumidification rotor 1, a desiccant air conditioner 2, a first post-regeneration exhaust pipeline 3 supplying post-regeneration exhaust from a regeneration zone 1b of the dehumidification rotor, a purge air supply pipeline 4 supplying purge air from the desiccant air conditioner to a purge zone of the dehumidification rotor, and a regeneration air supply pipeline 7 supplying regeneration air from the purge zone to the regeneration zone are provided. The desiccant air conditioner comprises a second post-regeneration exhaust pipeline 5 and an outdoor air intake pipeline 6. An indoor air intake pipeline supplying air of a dry room 9 to an absorption zone 1a of the dehumidification rotor 10, a first dry air supply pipeline 11 supplying dry air from the absorption zone to the dry room, and a second dry air supply pipeline 14 supplying dry air from the desiccant air conditioner to the indoor air intake pipeline are provided.