Air density comparison control
Assigneedelta green box Patent GmbH & Co. KG
InventorHelmut Nerling
Life of this patent
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Abstract
The invention is related to a method and an apparatus for controlling a ventilating system or an air conditioning system of buildings. This controlling is used predominantly in industrial real estates and serves for the establishment and maintenance of the desired room conditions. The method for controlling a ventilating system or an air conditioning system according to the invention uses the air density as the essential parameter for the controlling. The air density depends on the temperature, the air humidity and the air pressure. The air density difference between the introduced air and the room air is kept small.
Claims16
An apparatus for controlling a ventilating system, comprising:
- at least one temperature sensor, air humidity sensor, and air pressure sensor for detecting an air density in an inlet area;
- at least one temperature sensor, air humidity sensor, and air pressure sensor for detecting an air density in a room to be ventilated;
- and
- a controller, configured to determine an air density difference between the detected air density in the room to be ventilated and the detected air density in the inlet air area, and control the ventilation system such that the air density difference does not exceed a predetermined amount by executing a method comprising the following steps:
- a) comparing a target room temperature with an actual room temperature,
- b) if the temperature comparison results in a difference between the target room temperature and the actual room temperature that is greater than a predetermined threshold value, adjusting the inlet air temperature to an increased or decreased temperature, especially to a maximum heating or cooling temperature;
- c) increasing an inlet air amount through an inlet air blower depending on the result of the temperature comparison;
- d) repeatedly or continuously detecting the room air density and the inlet air density and readjusting the inlet air density depending on the detected air densities;
- e) reducing the inlet air amount, as soon as the room temperature changes towards the target room temperature;
- and
- f) changing the inlet air temperature from an increased or decreased temperature to a temperature closer to the target room air temperature if a difference between the target room temperature and the actual room temperature falls below a predetermined threshold value.
A method for controlling a ventilating system, comprising:
- detecting an air density in an inlet air area and an air density in a room to be ventilated;
- determining an air density difference between the room to be ventilated and the inlet air area;
- based on the air density difference, controlling the ventilation system so that the air density difference does not exceed a predetermined amount, wherein the method is executed in the following steps:
- a) comparing a target room temperature with an actual room temperature,
- b) if the temperature comparison results in a difference between the target room temperature and the actual room temperature that is greater than a predetermined threshold value, adjusting the inlet air temperature to an increased or decreased temperature, especially to a maximum heating or cooling temperature;
- c) increasing an inlet air amount through an inlet air blower depending on the result of the temperature comparison;
- d) repeatedly or continuously detecting the room air density and the inlet air density and readjusting the inlet air density depending on the detected air densities;
- e) reducing the inlet air amount, as soon as the room temperature changes towards the target room temperature;
- and
- f) changing the inlet air temperature from an increased or decreased temperature to a temperature closer to the target room air temperature if a difference between the target room temperature and the actual room temperature falls below a predetermined threshold value.
Dependencies are inferred from the claim text.