Intermixing Nozzle Assembly for Low-Humidity Evaporative Cooling
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Solution Overview
Problem
Evaporative air conditioning systems face issues such as excessive humidity introduction, susceptibility to mold and bacteria growth, excessive outdoor air introduction, and inefficiency, particularly in indirect systems, which are not practical in high-humidity areas.
Innovation Solution
The implementation of an evaporative air conditioning system utilizing 'Accelerated Hyper-Evaporation' technology, which creates a dense mist of microscopic water droplets that is rapidly drawn through a metal heat exchanger under pressurized air or vacuum, isolating the air from the water to prevent humidity addition and using a pump and nozzle assembly to mix pressurized air and water for efficient cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If evaporative cooling pads are used to cool air, then cooling efficiency is improved, but excessive humidity is introduced into the conditioned space
Solution Approach 1:
The system divides the air stream into two separate paths: one path passes through the evaporative cooling pads to be cooled and humidified, while the other path remains dry. These two paths are then mixed in controlled proportions to achieve the desired cooling effect without excessive humidity addition to the conditioned space.
2Temperature
If large volumes of air are introduced into the conditioned space for evaporative cooling, then cooling effect is improved, but drafts and dust introduction increase
Solution Approach 1:
The system merges recirculated indoor air with a portion of the cooled and humidified air from the evaporative pads. This combination allows the system to achieve effective cooling with reduced outdoor air intake, thereby minimizing drafts and dust introduction while maintaining cooling performance.
3Quantity of substance
If air is recirculated through evaporative pads multiple times, then water usage is reduced, but cooling effect decreases due to saturation
Solution Approach 1:
The system introduces fresh water to the evaporative cooling pads before each air pass to maintain optimal moisture levels. This preliminary replenishment ensures that the pads remain effective at evaporating water and cooling air, preventing saturation and maintaining cooling performance while using water efficiently.
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 solution prevents excessive humidity, reduces mold and bacteria growth, minimizes outdoor air introduction, and enhances efficiency by rapidly evaporating the mist to effectively cool air, outperforming existing indirect evaporative systems.
Implementation Method 1
creates a dense mist of microscopic water droplets suspended in air
Implementation Method 2
rapidly draws or forces the mist and ambient air through a metal heat exchanger under the influence of pressurized air or a vacuum source. This causes water in the mist to rapidly evaporate and cool the heat exchanger
Implementation Method 3
The temperature of air, especially when dry, can be dropped significantly through phase transition of water from a liquid to a vapor
Implementation Method 4
cool the heat exchanger so the heat exchanger can cool air or any other medium passed over or through the heat exchanger
Implementation Method 5
rapidly draws or forces the mist and ambient air through a metal heat exchanger under the influence of pressurized air or a vacuum source
Data Source
AI summary
An intermixing assembly for an evaporative air conditioner includes an elongated housing and a nozzle positioned in the housing. The housing has an inlet for receiving ambient air from a source thereof and an outlet. The nozzle is positioned adjacent the housing outlet and has a first inlet for connecting to a source of pressurized water; a second inlet for connecting to a source of pressurized air; and an outlet for dispensing the pressurized water and pressurized air and mixing them with the ambient air to form a mist near the housing outlet.