Method for controlling a ventilation system, ventilation system and control device
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Solution Overview
Problem
Ventilation systems in buildings face challenges in maintaining optimal air quality across varying room conditions due to differences in usage, occupancy, and environmental factors, while also requiring efficient energy consumption to reduce operating costs and extend system lifespan.
Innovation Solution
A method for controlling ventilation systems by setting and adjusting air parameter setpoints based on actual values, using a difference calculation to optimize air exchange and energy usage, incorporating recirculation, fresh air, and mixed modes, with adjustable blower units and valve systems to ensure quick and stable air quality achievement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the ventilation system operates with high ventilation output to quickly achieve desired air quality, then the air quality parameter is improved, but energy consumption increases
Solution Approach 1:
The ventilation system dynamically adjusts the ventilation output based on the determined difference between setpoint and actual air parameter values. When the difference is large, higher ventilation output is applied to quickly reduce the deviation. When the difference becomes small, the ventilation output is reduced to maintain energy efficiency. This dynamic adaptation resolves the contradiction between fast response and energy consumption.
Solution Approach 2:
The control method continuously monitors the actual air parameter values, calculates the difference from setpoints, and uses this feedback to adjust ventilation output. The feedback loop enables the system to respond appropriately to changing room conditions while optimizing energy usage by avoiding unnecessary high ventilation when air quality is already acceptable.
2Use of energy by moving object
If the ventilation system is operated resource-efficiently with lower energy consumption, then operating costs are reduced, but the speed to achieve desired air quality may be slower
Solution Approach 1:
The system dynamically adapts ventilation output to the actual need based on real-time monitoring of air parameter differences. This ensures energy is not wasted when air quality is already good, while still providing high ventilation capacity when needed to quickly correct poor air quality conditions, thus resolving the contradiction between energy efficiency and productivity.
3Ease of operation
If the ventilation system adjusts ventilation output based on determined difference, then air quality control is optimized, but system complexity increases
Solution Approach 1:
The control method uses feedback from air parameter sensors to automatically adjust ventilation output based on the determined difference from setpoints. This automated feedback control optimizes air quality without requiring complex manual intervention or sophisticated control algorithms, resolving the contradiction between ease of operation and system complexity.
Data Source
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AI summary
The invention presents a method for controlling a ventilation system 100 of a building with at least one room to be ventilated, comprising at least one ventilation unit 10 for generating a ventilation flow, a ventilation duct system 20 for distributing the generated ventilation flow, and at least one first ventilation device 31 coupled to the ventilation duct system 20 of a first room 30 of the building to be ventilated for supplying a supply air flow based on the generated ventilation flow into the first room 30, wherein the method comprises providing a setpoint for an air parameter to be controlled by the ventilation system 100 in the first room 30, detecting an actual value of the air parameter to be controlled in the first room 30, determining a difference between the provided setpoint and the detected actual value of the air parameter to be controlled in the first room 30, and controlling the ventilation system 100 depending on the determined difference of the first room 30.ready.,