Honeycomb Rotor CO₂ Desorption Using Low-Temperature Waste Heat
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing air conditioning systems for removing carbon dioxide and other contaminants are inefficient in energy use, occupy excessive space, and incur high costs due to the need for large ducts and high energy consumption, with limited seasonal applicability and high maintenance costs associated with filter replacement and heat resistance issues.
Innovation Solution
A honeycomb rotor-based air conditioning apparatus that utilizes low-temperature waste heat to generate saturated steam for desorption and regeneration, reducing the size of the rotor and device, and allowing for efficient removal of carbon dioxide and VOCs with reduced ventilation, thereby improving energy efficiency and adaptability across seasons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a rotor type total heat exchanger is used for ventilation, then heat exchange efficiency is improved (70%), but 30% of energy is still wastefully discarded and large duct space is occupied
Solution Approach 1:
The invention extracts only the necessary ventilation function from the total heat exchanger system. Instead of using a large rotor type total heat exchanger that occupies significant duct space, the patent implements a compact heat exchanger that recovers heat from exhaust air while minimizing space occupation. The ventilation system is designed to provide only the minimum necessary fresh air intake, with the heat recovery function separated from the main ventilation ductwork.
Solution Approach 2:
The invention changes the operating parameters of the ventilation system by reducing the ventilation air quantity to the minimum necessary level while maintaining indoor air quality through strategic placement of fresh air inlets. This parameter change allows the use of a compact heat exchanger instead of a large rotor type system, significantly reducing duct space requirements while still achieving effective heat recovery.
2Volume of stationary object
If a compact stationary type total heat exchanger is used, then duct space is reduced, but heat exchange efficiency drops to about 50% causing 50% energy waste
Solution Approach 1:
The invention extracts the essential heat recovery function from a large total heat exchanger system and implements it in a compact form. By focusing only on the critical heat exchange function and eliminating unnecessary components and ductwork, the patent achieves a compact stationary type heat exchanger that occupies minimal space while maintaining effective heat recovery through optimized heat transfer surfaces and strategic positioning.
Solution Approach 2:
The invention changes the design parameters by reducing the heat exchanger size and optimizing the ventilation air quantity to minimum necessary levels. This allows the use of a compact stationary type heat exchanger with reduced surface area and simpler structure, while maintaining adequate heat recovery performance through improved air flow management and heat transfer efficiency in the compact design.
3Object-affected harmful factors
If ventilation air quantity is increased to maintain indoor air quality, then air quality is improved, but energy consumption for blowing air increases
Solution Approach 1:
The invention changes the ventilation air quantity parameter to the minimum necessary level required to maintain indoor air quality. Instead of providing large volumes of fresh air, the system strategically introduces fresh air at key locations where it can most effectively displace contaminants. This parameter reduction significantly lowers the energy consumption of blowers and fans while maintaining adequate indoor air quality through improved air distribution patterns.
4Object-affected harmful factors
If duct piping is extended to reach distant exhaust locations, then exhaust coverage is improved, but construction cost and air resistance increase
Solution Approach 1:
The invention extracts the exhaust function from a centralized distant location and implements local exhaust points throughout the building. Instead of extending duct piping to reach distant exhaust locations, the patent places exhaust openings at multiple strategic locations where contaminants are generated. This extraction of the centralized exhaust function eliminates the need for long duct runs, reducing construction costs and air resistance while maintaining comprehensive exhaust coverage.
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 apparatus effectively maintains indoor air quality with reduced ventilation, achieves energy savings in both summer and winter, and minimizes space and cost requirements by using low-temperature waste heat to generate saturated steam for desorption, enhancing energy efficiency and reducing operational costs.
Implementation Method 1
a honeycomb rotor (1) having an adsorption function or a sorption function of contaminants such as carbon dioxide and VOC gas
Implementation Method 2
introducing saturated steam into the desorption/re-generation zone to desorb carbon dioxide and contaminants
Implementation Method 3
utilizes low-temperature waste heat to generate saturated steam for desorption and regeneration
Implementation Method 4
The rotor is divided into a processing zone and a desorption/re-generation zone
Data Source
AI summary
An energy-efficient, space-saving, low-cost, waste-heat-utilizing ventilating air conditioning apparatus uses a honeycomb rotor having a function of adsorbing or absorbing contaminants such as carbon dioxide and VOC gas. The honeycomb rotor is disposed in a rotor rotating device having at least a processing zone and a re-generation desorption zone. Air to be processed is passed through the processing zone to remove contaminants such as carbon dioxide to produce supply air. Water is directly sprayed or dropped into a heat exchanger provided at an entrance of the re-generation desorption zone to evaporate the generated water film by heating. The generated saturated steam is introduced for desorbing carbon dioxide and pollutants, and the stream is discharged the stream outdoors. The ventilating air conditioning apparatus can operate without the energy loss associated with ventilation.