Indirect Air Handling Control for Low-Energy Temperature and Humidity
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Solution Overview
Problem
Conventional air handling systems require high energy consumption to control environmental parameters in indoor spaces, especially during extreme weather conditions, leading to increased operational costs and environmental impact.
Innovation Solution
An air handling system comprising an indirect heat exchanger, circulation equipment, and a control apparatus that adjusts air circulation, liquid injection, and direct temperature adjustment to maintain optimal environmental conditions with minimal energy use, using a psychrometric chart to determine control methods based on air state zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air handling systems are used to control environmental parameters in indoor spaces, then temperature and humidity control is achieved, but energy consumption increases significantly
Solution Approach 1:
The system divides air handling into separate pathways: a first circulation path for pre-cooling air through the evaporator, and a second circulation path for main cooling through the condenser. This segmentation allows different portions of air to be treated differently, reducing overall energy consumption while maintaining temperature control.
Solution Approach 2:
The system performs preliminary cooling of air in the first circulation path before it enters the target space. By pre-cooling air using the evaporator in advance, the subsequent cooling load in the second path is reduced, thereby lowering total energy consumption while achieving the required temperature control.
2Quantity of substance
If conventional air handling systems are used to control environmental parameters in indoor spaces, then humidity control is achieved, but energy consumption increases
Solution Approach 1:
The system separates dehumidification into two stages: initial dehumidification in the first circulation path through the evaporator, and final humidity adjustment in the second circulation path. This segmentation enables efficient humidity control by addressing the bulk of moisture removal first, reducing the energy needed for fine-tuning humidity levels.
Solution Approach 2:
The system performs preliminary dehumidification in the first circulation path before air enters the target space. By removing excess moisture in advance through the evaporator, the subsequent humidity control requirements are minimized, thereby reducing energy consumption while achieving proper humidity levels.
3Temperature
If hydrocarbons are used as fuel for energy consumption in air handling systems, then temperature control is achieved, but environmental damage from carbon emissions occurs
Solution Approach 1:
The system uses the heat generated by the condenser to pre-heat or pre-cool air in the first circulation path, making the system self-sufficient. By utilizing waste heat from the condensation process, the system reduces its dependence on external hydrocarbon-based energy sources, thereby minimizing carbon emissions while maintaining temperature control.
Solution Approach 2:
The system changes the thermal parameters of air by using the condenser to transfer heat to or from air in the first circulation path. This parameter change allows the system to reduce its energy demand from hydrocarbon sources, thereby reducing carbon emissions while achieving the required temperature control in the target space.
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 system effectively maintains target space conditions with reduced energy consumption by optimizing air circulation, heat exchange, and temperature adjustments, minimizing energy usage and environmental impact.
Implementation Method 1
a vaporization part configured to inject liquid into the heat exchange part
Implementation Method 2
a heat exchange part with a vaporization part configured to inject liquid into the heat exchange part, a first heat exchange path, and a second heat exchange path configured to exchange heat with the first heat exchange path and the vaporization part
Data Source
AI summary
An air handling system includes an indirect heat exchanger, a first circulation equipment, a second circulation equipment, a third circulation equipment, a direct adjusting apparatus, a first sensor configured to detect a state of a first air, a second sensor configured to detect a state of a second air, and a control apparatus configured to receive the state of the first air, receive the state of the second air, and control at least one of a circulation of the first air within the first circulation equipment, a circulation of second air within the second circulation equipment, a liquid injection by a vaporization part, an exchange of the second air with the first air with the third circulation equipment, and a direct adjustment of the second air with the direct adjusting apparatus based on the received state of the first air and the received state of the second air.