HVAC Air Ionization Control for Lower VOC Ventilation Load
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Solution Overview
Problem
HVAC systems face inefficiencies due to the need to exchange outside air to reduce volatile organic compounds (VOCs), increasing thermal loads and operational costs, while maintaining air quality standards.
Innovation Solution
The implementation of air ionization technology within HVAC systems to reduce VOC levels in recirculated air, allowing for reduced outdoor air exchange and optimized air quality management using sensors and controlled sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If outside air is introduced to reduce volatile organic compounds, then air quality is improved, but thermal load on the HVAC system increases
Solution Approach 1:
The patent extracts volatile organic compounds from the air stream using activated carbon filters and other filtration mechanisms, allowing the system to maintain air quality without introducing large volumes of outside air that would increase thermal load
Solution Approach 2:
The patent introduces an intermediary substance (activated carbon and other filter media) that absorbs and removes VOCs from the recirculated air, enabling the system to achieve air quality improvement through a mediating mechanism rather than direct air exchange
2Object-affected harmful factors
If outside air exchange rate is increased to maintain air quality standards, then air quality is improved, but energy consumption increases
Solution Approach 1:
The patent implements continuous air filtration and purification within the recirculated air stream, allowing the system to maintain air quality standards continuously without the intermittent energy-intensive process of bringing in and conditioning large volumes of outside air
Solution Approach 2:
The patent changes the approach from modifying air exchange parameters to modifying air treatment parameters, using advanced filtration and purification technologies to remove contaminants from recirculated air rather than increasing outside air exchange rates
3Use of energy by moving object
If recirculated air is used to reduce energy consumption, then energy efficiency is improved, but volatile organic compound levels increase
Solution Approach 1:
The patent extracts volatile organic compounds from recirculated air using activated carbon filters and other removal mechanisms, enabling the system to maintain high energy efficiency by recirculating air while actively removing harmful contaminants
Solution Approach 2:
The patent uses intermediary filtration media and purification substances that are introduced into the recirculated air stream to capture and remove volatile organic compounds, allowing the system to maintain both energy efficiency and air quality
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 enhances HVAC efficiency and reduces costs by minimizing the need for heating or cooling outside air, maintaining air quality while decreasing the size and operational demands of HVAC components.
Implementation Method 1
using air ionization to reduce the level of volatile organic compounds in the recirculated air
Data Source
AI summary
Disclosed is an HVAC system having one or more air ionization devices for increasing operating efficiency and reduces overall cost by reducing the level of volatile organic compounds in recirculated building air. Also disclosed are combinations of heat exchangers operating in conjunction with ionization to further reduce operating costs. Included are various control sequences for a controller useful for managing air quality using CO2, VOC and other sensors to maintain air quality at reduced cost.