Dual Evaporator-Condenser Dehumidifier for Higher Drying Efficiency
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Solution Overview
Problem
Current dehumidifiers are inefficient in reducing humidity levels, particularly in applications such as fire and flood restoration, where rapid drying is necessary, and they fail to provide effective dehumidification per kilowatt of power used.
Innovation Solution
A dehumidification system with a secondary evaporator and condenser, which causes part of the refrigerant to evaporate and condense twice in one refrigeration cycle, increasing compressor capacity without additional power, resulting in enhanced efficiency and dehumidification capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional single evaporator and condenser system is used, then the device complexity is low, but the dehumidification efficiency and compressor capacity are insufficient
Solution Approach 1:
The refrigeration system is divided into two separate loops: a primary loop with a first evaporator and first condenser, and a secondary loop with a second evaporator and second condenser. Both loops share a common compressor and refrigerant supply. This segmentation allows the refrigerant to evaporate and condense twice per cycle, effectively doubling the dehumidification capacity without proportionally increasing compressor power consumption.
2Productivity
If the compressor power is increased to enhance dehumidification capacity, then the dehumidification efficiency improves, but the energy consumption increases
Solution Approach 1:
The system changes the operational parameters of the refrigeration cycle by implementing dual evaporation and dual condensation processes. The refrigerant undergoes phase change twice (evaporation and condensation) for each complete cycle, effectively utilizing the compressor's work more efficiently. This parameter change allows the system to achieve higher dehumidification capacity without increasing compressor power consumption.
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 configuration increases the overall efficiency of the dehumidification system, providing more dehumidification per kilowatt of power used, allowing for increased drying potential in applications like fire and flood restoration.
Implementation Method 1
causes part of the refrigerant within the system to evaporate and condense twice in one refrigeration cycle
Implementation Method 2
causes part of the refrigerant within the system to evaporate and condense twice in one refrigeration cycle
Data Source
AI summary
A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.