Method for ventilating, heating and/or cooling a room and device for same
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Solution Overview
Problem
Existing ventilation and temperature control methods in buildings often result in strong air movements that create an unpleasant climate in occupied zones, especially with high primary air flows due to induction effects, leading to drafts and perceived ventilation, heating, or cooling issues.
Innovation Solution
A method utilizing a volume flow control device and induction device to manage two distinct types of air flows, where the first primary air is introduced with an induction effect and the second primary air is introduced without or with a lower induction effect, allowing for regulation based on material and thermal room loads to maintain a pleasant climate by controlling air movement and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If primary air flow is increased to improve ventilation effectiveness, then air exchange rate is improved, but air movement in occupied zone becomes too strong causing drafts and discomfort
Solution Approach 1:
The ventilation system is segmented into two independent air flow paths: a first primary air flow path with induction effect for high air exchange, and a second primary air flow path without induction for stable, comfortable air supply. This segmentation allows each path to serve its specific function without interfering with the other, resolving the contradiction between ventilation effectiveness and comfort.
Solution Approach 2:
Different quality characteristics are applied to different air flows: the first primary air flow uses strong induction effect and high velocity for effective air exchange in non-occupied zones, while the second primary air flow uses low or no induction effect for stable, comfortable supply in occupied zones. Each air flow path has locally optimized properties suited to its specific function.
2Productivity
If induction device is used to increase air exchange rate, then ventilation performance is improved, but air movement becomes excessive leading to unpleasant climate
Solution Approach 1:
The system segments air supply into two paths: one utilizing induction devices for high air exchange in non-occupied zones, and another bypassing induction devices for comfortable, stable air supply in occupied zones. This allows the induction effect to be applied only where it benefits ventilation performance without compromising comfort.
Solution Approach 2:
Induction effect is applied locally and selectively - strong induction in areas where high air exchange is needed (non-occupied zones near ventilation outlets), and no or low induction in occupied zones where comfort is prioritized. The induction device can be positioned or configured to create localized high-velocity flows that mix air effectively without creating uncomfortable drafts in seating areas.
3Object-affected harmful factors
If volume flow of primary air is reduced to decrease air movement, then draft comfort is improved, but air exchange rate becomes insufficient
Solution Approach 1:
The air supply system is divided into two parallel paths: the first path provides high volume flow air exchange in non-occupied zones away from induction effects, and the second path provides low volume flow comfortable air supply in occupied zones. This segmentation enables the system to achieve both high overall air exchange and local comfort simultaneously.
Solution Approach 2:
Different volume flow rates are supplied to different locations: high volume flow to non-occupied zones for effective air exchange, and low volume flow to occupied zones for comfort. The system optimizes the local quality of air supply according to the specific needs of each zone, allowing high productivity overall while maintaining comfort where people are present.
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 ensures a comfortable and well-ventilated environment with optimal air quality and reduced drafts by adjusting air flow rates, preventing excessive air movement while maintaining sufficient air exchanges, thus providing effective ventilation and air conditioning.
Implementation Method 1
air, in particular conditioned, i.e. heated or cooled air, is blown upwards, preferably in the area of a facade of the room, whereby the air flows along the boundary surfaces of the room, i.e. first along a wall or a window and then along the ceiling of the room and entrains room air by induction effect
Data Source
Figure 1
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Figure 4
AI summary
The invention relates to a method for ventilating, heating and/or cooling a room (2) in a building or the like, with the use of a volume flow setting device (15), an induction device (34) and/or a heat exchanger (18) depending on the operating mode, - with the Effect of the induction device (34) first secondary air (37') passes through the heat exchanger (18) and is introduced into the room (2) in a first spatial flow type together with first primary air (36') supplied to the induction device (34), - the second Primary air (36") is introduced into the room (2) in a second room flow type that differs from the first room flow type, - and wherein the volume flow adjustment device (15) adjusts the volume flows of the first and second primary air (36', 36") as a function of a material and/or a thermal room load of the room (2) controls and/or regulates. Furthermore, the invention relates to a corresponding device and a room with a device.