DE102017206356A1 - Reduction of fine dust concentration in a building - Google Patents

Abstract

Method and system for reducing the particulate matter in a building, which includes a HVAC system (HVAC) with ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtration of the outside - / circulating air includes. It is detected by means of fine dust detector (2) continuously the fine dust concentration (PM) in the rooms and transmitted to a higher-level HVAC control center (10). Through this, the fan speed, the filter level of the air filter and / or the rotational position of the air flaps for the outside / recirculating air guide changed on the basis of the fine dust concentrations in order to reduce the particulate matter load. Alternatively, the particulate matter detectors may be IoT particulate matter detectors that store the detected particulate matter concentrations in a cloud infrastructure (CLOUD). It is then determined on the basis of these fine dust concentrations by means of a cloud service application (CSA) a changed fan speed, a changed filter degree of the air filter and / or a changed rotational position of the air flaps for fine dust reduction. The determined settings are forwarded by the cloud service application via an Internet connection (INT) to an HVAC control center for setting the fan speed, the degree of filtering and the rotational position.

Description

The invention relates to a method for reducing the particulate matter pollution in a building, wherein the building a HVAC -Anlage with a plurality of ventilation ducts, air filters and controllable fans and louvers for adjusting the amount of fresh air supplied and recirculated circulating in the building, and optionally for heating and / or cooling of the building comprises.

The amount and concentration of particulate matter in the air are important factors in determining air quality. Particulate matter pollution is determined by exhaust gases from internal combustion engines in road traffic, by unfiltered coal-fired power stations and by emissions from heating systems.

Of particular importance in determining particulate matter loading is assigned to the particle size. The rule here is that the smaller the particles are, the higher the danger to particulate matter for humans. The so-called PM Particulate Matter is a generally recognized categorization for particulate matter size. If a particulate matter has an aerodynamic diameter of 10 or less microns (μm), the particulate falls into the PM10 category. Frequently, EN 12341 is used to measure particulate matter detection, which determines how the PM10 fraction of particulate matter is to be determined. This standard has been valid in the EU since 2005.

However, the PM10 value is not a sharp limit on the aerodynamic diameter of the particles. Rather, attempts were made to replicate the deposition behavior of the upper respiratory tract. Therefore, all particles <1μm are included for the PM10 value, the larger particles ( 1 -10μm) but only to a certain percentage, which then reaches 0% at 15μm. The averaging of this weighting function then corresponds to approximately 10 μm. Tightening was introduced with the "PM2.5" standard, which includes all respirable particles. An even more stringent version of the standard deals with particles which are <0.1 μm small.

The particulate matter pollution is increasing, especially in urban areas such as in Beijing or Warsaw, and is becoming a major health and economic problem. Particularly high is the particulate matter pollution in China. According to the Ministry of Environmental Protection of China (MEP) of the PM2.5 limit value is 75 micrograms / ^m3. This limit is regularly exceeded, as in Beijing. In fact, the particulate matter values reach several times the legal limit (see table below). Table : Air pollution in China in 2013 after PM2.5 (Top 20 cities) space city province annual average maximum value 1 Xingtai Hebei 155.2 μg / m3 688 μg / m ³ 2 Shijiazhuang Hebei 148.5 μg / m3 676 μg / m3 3 Baoding Hebei 127.9 μg / m ³ 675 μg / m ³ 4 Handan Hebei 127.8 μg / m ³ 662 μg / m ³ 5 Hengshui Hebei 120.6 μg / m ³ 712 μg / m ³ 6 Tangshan Hebei 114.2 μg / m ³ 497 μg / m ³ 7 Jinan Shandong 114.0 μg / m ³ 490 μg / m ³ 8th Langfang Hebei 113.8 μg / m ³ 772 μg / m ³ 9 Xian Shanxi 104.2 μg / m ³ 598 μg / m ³ 10 Zhengzhou Henan 102.4 μg / m ³ 422 μg / m ³ 11 Tianjin Tianjin 95.6 μg / m ³ 394 μg / m ³ 12 Cangzhou Hebei 93.6 μg / m ³ 380 μg / m ³ 13 Peking Peking 90.1 μg / m ³ 646 μg / m ³ 14 Wuhan Hubei 88.7 μg / m ³ 339 μg / m ³ 15 Cheng you Sichuan 86.3 μg / m ³ 374 μg / m ³ 16 Urumqi Xinjiang 85.2 μg / m ³ 387 μg / m ³ 17 Hefei Anhui 84.9 μg / m ³ 383 μg / m ³ 18 Taizhou Jiangsu 80.9 μg / m ³ 474 μg / m ³ 19 Taizhou Jiangsu 80.8 μg / m ³ 513 μg / m ³ 20 Changsha Hunan 79.1 μg / m ³ 325 μg / m ³

The particulate matter load does not stop in front of buildings, e.g. in front of office buildings, production halls or residential buildings, because air conditioning and ventilation systems also suck in "fresh air". Depending on the design and arrangement and distribution of the air ducts of the entire air conditioning and ventilation system, a different particulate matter pollution takes place in the individual rooms of the building.

The equipment required to determine the current fine dust concentration is very high. It is also known that - at least in part - whole equipment is set up per room, just to keep the fine dust concentration per room under control.

To remedy this problem, the population is asked to wear a mask or to stay in the building or not to go outdoors.

From the international release WO 2015/036204 A1 The applicant is a detection device for fine dust determination known.

On this basis, it is an object of the present invention to provide a method and a system for reducing particulate matter pollution, in particular health-acceptable limits, in a building.

The object of the invention is achieved with the features of the independent claims 1 to 3 such as 7 solved until 9. Advantageous method variants and advantageous embodiments of the system are mentioned in the dependent claims.

This is achieved by a plurality of fine dust detectors, which are arranged in a building to capture the local fine dust concentration. The fine dust detectors are wired or wirelessly connected to a higher-level control center. The control center can be a Fire Panel (fire control panel), which reports the respective values of the fine dust concentration eg to a management station, to a fire panel HVAC Central office or to a HVAC Controller or to a cloud-based logic engine. The fire alarm control panel as well as the aforementioned control center or controller can then change the setting of the ventilation and air conditioning system of the building, for example, to reduce the fine dust pollution locally.

For this purpose, the recirculation speed can be reduced, switched to recirculation mode, so that no outside air or "fresh air" more enters the building, or a particulate matter filter in the intake of the outside air or in the recirculated air are switched. The fine dust filter can be connected as a bypass, over which, if necessary, the outside air or the recirculated air is guided. The ventilation measures may be carried out locally or for the whole building, depending on the ventilation and air conditioning equipment of the building, e.g. by controlling ventilation flaps or fans of a respective building zone.

The fine dust detector can also be part of a fire or smoke alarm. If a limit value of the fine dust concentration is exceeded, this can be indicated visually or acoustically on the fine dust detector. Such a smoke detector can be used to trigger an additional "fine dust" message. A fine particle or particulate matter alarm is generated depending on the particulate matter concentration present. In response to this message or alarm, fire panels, HVAC Central, management stations, cloud-based logic engines or HVAC Reference controller and trigger appropriate controls.

Furthermore, the fine dust detector can be designed as an IoT fine dust detector ("IoT" for the Internet of Things), which cyclically transmits current values of fine dust concentration via an Internet connection to the "cloud". The values of the fine dust concentration of all IoT fine dust detectors are stored in the cloud. Due to the continuous storage there is also a history of the stored fine dust concentrations. to metrological evaluation and adjustment change of the ventilation and air conditioning can then access a management station via the Internet to the stored values. Alternatively, a cloud application can be executed in the cloud, which performs the metrological evaluation and directly initiates or executes settings of the ventilation and air conditioning system of the building via the management station.

The exceeding of a limit value of the fine dust concentration can also be transmitted from the "cloud" via an Internet connection to a smartphone and signaled there. For targeted alerting, e.g. the cloud application to be connected to an "indoor positioning system" of the building, which can determine the current location of a smartphone located there.

The essence of the invention is thus in the higher-level detection of particulate matter pollution in a building and in the targeted alerting of the people present there as well as in targeted ventilation measures to reduce the particulate matter in the building.

In the method according to the invention for reducing the particulate matter load in a building, the building comprises a HVAC -Investment ( HVAC for heating, ventilation and air conditioning) with a plurality of ventilation ducts, air filters and (electrically) controllable fans and louvers for adjusting the amount of fresh air supplied and the degree of filtration of the outside air and / or recirculated circulating air in the building, and possibly for heating and / or for cooling the building. It is the fine dust concentration continuously detected at least in part of the rooms of the building by means of a respective fine dust detector and to a parent HVAC Central office. The fine dust detector is preferably designed as a point detector. It is through the HVAC Center on the basis of the detected fine dust concentrations, the speed of the respective fan, the filter level of the respective air filter and / or the rotational position of the respective air flaps for the outside / recirculation air guide to reduce the particulate matter in the building is changed.

Alternatively, and in contrast to the previous method, the fine dust concentration is continuously detected at least in part of the rooms of the building by means of a respective fine dust detector and transmitted to a higher-level alarm center, in particular to a higher fire alarm center. It is the respective fine dust concentration from the security control center to a data technology related to the security control center HVAC Central office forwarded. Based on the detected fine dust concentrations, the rotational speed of the respective fans, the degree of filtering of the respective air filters and / or the rotational position of the respective air flaps for the outer / recirculating air duct are then changed to reduce the particulate matter pollution in the building.

Further alternatively, the fine dust concentration is detected continuously, at least in part of the rooms of the building by means of a respective IoT-capable particulate detector, ie by means of an "Internet-capable" fine dust detector, eg via a WLAN connection, via a Bluetooth connection, via a mobile data connection ( GSM, 3G, LTE, EDGE) or via Ethernet can directly exchange data over the Internet. The respective fine dust concentration is stored in a cloud infrastructure. On the basis of these fine dust concentrations or fine dust concentration values by means of a cloud service application or by means of a web service provided by the cloud infrastructure, a changed speed of the respective fans, a changed degree of filtering of the respective air filters and / or a changed rotational position of the respective Air flaps for the external / recirculating air duct to reduce the particulate matter pollution in the building determined. The ascertained setting values from the cloud service application or from the web service via an Internet connection to a HVAC Central office forwarded. It will then be through the HVAC Center based on the changed set values, the speed of the respective fan, the filter level of the respective air filter and / or the rotational position of the respective louvers set.

In the simplest case, the supply of outside air can be completely stopped in the inventive method under extreme particulate matter and switched to recirculation mode in the building. For this purpose, a fan which is provided for sucking in outside air can be switched off. Alternatively or additionally, an air damper can be closed in a ventilation duct for the outside air. If the exceeding of a respective particulate matter limit value is reported in one of the rooms or in some of the rooms of the building, the rotational position of an air damper can be selectively changed so as to reduce the air supply into this room or into these rooms. Alternatively, it is possible to reduce the speed of the fan which is installed for the air supply in these rooms or in these rooms. Alternatively, the degree of filtering of an air filter may be increased, the more filtered air of which is now more targeted, e.g. is passed through the appropriate rotational position of a damper, to flow through this room or these rooms, so that there the fine dust concentration is lowered again.

The air filter is preferably a microfilter suitable for effectively filtering PM10 and PM2.5 particulate matter. The degree of filtration is preferably in the range of 0% to less than 100%, such as less than 90%, 95% or 98%. A filter level of 0% means that the air to be filtered, such as the outside air or the recirculated air, remains unfiltered. The adjustment of the filter degree of an air filter is preferably carried out by the rotational position of an air damper, which switches the air filter more or less as a bypass to the ventilation duct, depending on the rotational position through which the air to be filtered is conveyed.

According to a variant of the method, when a predetermined limit value for the particulate matter pollution in the respective room of the building is exceeded, an optical and / or acoustic fine dust alarm can be issued at least in the respective room of the building.

According to a further variant of the method, the fine dust concentrations and / or a respective fine dust alarm can be transmitted via an Internet connection to a mobile device, in particular to a smartphone, if a predefined particulate matter limit value is exceeded. It is on the mobile device, in particular on the smartphone, a particular downloadable via the Internet software application, ie a so-called "App" executed to represent received particulate matter concentrations on a display of the mobile device and a received particulate matter alarm visually and / or acoustically on the to issue a mobile device.

The object of the invention is also achieved with a mobile device, in particular with a smartphone or a mobile communication terminal, which is used to carry out the method according to claim 5 is set up. For carrying out the method, a software application is preferably loaded on the mobile device which has suitable program steps for carrying out the method on a processor of the mobile device.

The object of the invention is further achieved with a system for reducing particulate matter in a building, the building comprising several rooms. The system has a HVAC -Anlage with a plurality of ventilation ducts, air filters and controllable fans and louvers for adjusting the amount of fresh air supplied and the degree of filtration of the outside air and / or recirculated air in the building and, where appropriate, for heating and / or cooling of the building. At least one fine dust detector is arranged in at least part of the rooms of the building for the continuous detection of a (local) fine dust concentration. A parent HVAC Central or HVAC Controller is connected via a wired and / or wireless bus system at least with the controllable fans and the controllable louvers. Preferably, the control of the louvers by means of an actuator, which is of the HVAC Center is controlled accordingly. The HVAC Central or the HVAC Controller is set up or programmed to change the speed of the respective fans, the degree of filtering of the respective air filters and / or the rotational position of the respective louvers for the external / recirculated air guidance on the basis of the (local) fine dust concentrations received by the fine dust detectors via the bus system, to reduce particulate pollution in the building.

Alternatively, and in contrast to this, the system has a security alarm system, in particular a fire alarm system, which is installed in the building and which has a security alarm center, an at least indirectly connected line-bound and / or wireless bus system and at least one fine dust detector. On the bus system, which is also referred to as detector bus, in addition to the fine dust detectors a plurality of smoke detectors and a plurality of optical alarms such as flashing lights, a plurality of acoustic alarms such as sounders and / or a plurality of combined optical / acoustic alarms such as so-called Sounder / Beacon be connected. The at least one fine dust detector is connected in at least part of the rooms of the building for the continuous detection of a fine dust concentration to the bus system. A HVAC -Central, which on the one hand data-technically to control the HVAC On the other hand, the data center is connected to the alarm control center and is set up or programmed based on the fine dust concentrations received from the particulate matter detectors via the alarm panel, the speed of the respective fans, the degree of filtering of the respective air filters and / or the rotational position of the respective external air dampers - / recirculation to change in order to reduce the particulate matter in the building or in the respective rooms of the building.

Further alternatively and in contrast to the two previous systems, the system comprises a cloud infrastructure with a database and at least one cloud service application or with at least one web service provided by the cloud infrastructure. The system continues with one HVAC Central control of the HVAC Facility which has an internet connection to the cloud infrastructure is connected and programmed to receive current settings for the speed of each fan, for the degree of filtering of the respective air filters and / or for the rotational position of the respective louvers from the cloud service application or web service and with these the respective fans and louvers head for. Furthermore, the system has at least one IoT-capable fine dust detector, which is arranged in at least part of the rooms of the building and is adapted to store a continuously recorded fine dust concentration via an Internet connection in the database of the cloud infrastructure. The cloud service application or the web service is programmed to, based on the fine dust concentrations stored in the database, a changed speed of the respective fan, a modified degree of filtering the respective air filter and / or a changed rotational position of the respective louvers for the outside / recirculation to reduce particulate matter in the building.

According to one embodiment, a respective fine dust detector has an optical and / or acoustic alarm transmitter unit and is set up to output a visual and / or acoustic fine dust alarm when a predetermined limit value for the particulate matter pollution is exceeded in the respective room of the building.

According to another embodiment, the functionality of a fine dust detector is integrated into a fine dust / smoke detector which has been extended in its functionality as a combined structural unit.

According to a further embodiment, the combined particulate matter / smoke detector is adapted to at least indirectly direct a continuously detected particulate matter concentration to a superordinate one HVAC Central office. In addition, it is set up to issue a fire alarm in the event of a detected fire to a higher-level alarm control panel, in particular to a fire alarm control panel.

Alternatively, the combined particulate matter / smoke detector may be an IoT capable particulate matter / smoke detector and may be configured to transmit a continuously collected particulate matter concentration to a cloud service application or to a web service provided by a cloud infrastructure to store a database provided by the cloud infrastructure. Furthermore, the combined particulate matter / smoke detector is set up to issue a fire alarm to a higher-level alarm control panel, in particular to a fire alarm control panel, in the event of a detected fire.

The invention and advantageous embodiments of the present invention will be explained using the example of the following figure.

With HVAC is a HVAC or HVAC system installed in a building. It comprises a number of ventilation ducts installed in the building and in the rooms of the building 11 , Fan 13 for conveying outside air or circulating air and a plurality of air filters 12 for filtering the outside air and / or recirculated air circulating in the building. The fans 13 are about one HVAC -Central 10 of the HVAC -Investment HVAC switched on and off. You can also be set up with one of the HVAC -Central 10 preset variable fan speed to be operated. The air filter shown by way of example 12 is shown in the ventilation duct 11 shown as a bypass and adjustable in its degree of filtration. This is achieved by changing the setting of the local air damper 14 controlled by the HVAC -Zentrale 10. This is according to the set rotational position of the air damper 14 a complete shutdown until a complete connection of the air filter 12 for filtering through the air filter 12 passing outside air or circulating air on fine dust out possible.

With GMA is a hazard warning system or a fire alarm system called. In the example are a wireless fire alarm system GMA as well as a cable-bound fire alarm system GMA shown. In the first case are two wireless particulate matter detectors 2 , a wireless smoke detector 3 and a wireless particulate matter / smoke detector 4 via a gateway GW indirectly wireless with a security alarm center 1 connected, each symbolized by an antenna symbol. In the second case, there are two line-connected fine dust detectors 2 , a smoke detector 3 , a particulate matter / smoke detector 4 as well as an alarm transmitter 5 on a common detector line ML as a bus system to the alarm control panel 1 connected. In both cases, the fine dust detectors 2 or particulate matter / smoke detectors 4 optical and acoustic alarm units 6 . 7 exhibit. Via the wireless as well as wired bus system ML can each fine dust concentrations PM and a respective band alarm or fire detection level DL to the danger control center 1 be transferred. In the opposite direction, the danger control center 1 a fine dust alarm FAL as well as a fire alarm DL on the bus system ML spend this to FAL . DL on the spot via the optical and acoustic alarm units 6 . 7 issue. The respective fine dust concentrations PM as well as a fine dust alarm FAL can also wirelessly from the security center via an Internet connection INT 1 to a mobile device 20 , in particular to a smartphone, issued and there by means of a suitable application APP on a display DIS displayed and / or alarmed visually / acoustically.

The danger control center 1 can be set up or programmed according to the invention ( PRG1 ), the received fine dust concentrations PM to the HVAC Center 10 forward, so the latter on the speed of each fan 13 , the degree of filtering of the respective air filters 12 and / or the rotational position of the respective louvers 14 for the outside / recirculating air guide or adapt to reduce the particulate matter in the building, ie in the respective achievable by air-technical measures in the building rooms. The implementation of the fine dust reduction is by means of a on the HVAC Central 10 achieved by a processor-based control unit, on which appropriate software PRG2 loaded. In addition, the HVAC Center 10 to be set up or programmed ( PRG2 ), in the opposite way based on the received fine dust concentrations PM a respective particulate matter alarm FAL to the danger control center 1 issue if a respective particulate matter limit has been exceeded in one or more rooms. The danger control center 1 can also be set up or programmed ( PRG1 ), a received particulate matter alarm FAL to the fine dust detector connected to it 2 , Particulate matter / smoke detector 4 or to the alarm device 5 issue.

The alarms 5 can be set up, a visually and / or acoustically distinctive fire alarm DL or fine dust alarm FAL output, such as by different volume, flash frequency, flash color, pitch.

Alternatively, the danger control center 1 set up or programmed ( PRG1 ), changed setting values SET for the speed of the fan 13 , for the degree of filtration of the respective air filters 12 and / or for the rotational position of the respective louvers 14 for the external / recirculating air duct to reduce particulate matter in the building and only these set values SET to the HVAC Central 10 issue. In this case, the HVAC -Zentrale 10 the corresponding control commands directly to the fan 13 and dampers 14 out.

In the upper part of the figure is a cloud infrastructure CLOUD shown by which a database DB for storing received fine dust concentrations PM and at least one cloud service application CSA or web service is provided. According to the invention the fine dust detectors 2 as well as the fine dust / smoke detectors 4 and if necessary the smoke detectors 3 and the alarms 5 IoT-enabled. You can use a wireless Internet connection INT, such as via WLAN, Bluetooth, 6LoWPAN, 3G, LTE, EDGE) or via a wired Internet connection INT, such as via Ethernet (LAN), a data connection to the cloud infrastructure CLOUD take up. The IoT fine dust detectors 2 and IoT fine dust / smoke detectors 4 are set up to have a respective continuously recorded fine dust concentration PM in the cloud infrastructure CLOUD , preferably in the database provided there DB save. Based on these fine dust concentrations PM be using the cloud service application CSA or the web service, a changed speed of the respective fan 13 , a modified degree of filtering of the respective air filters 12 and / or a changed rotational position of the respective louvers 14 determined for the outside / recirculating air guidance, in order to reduce the particulate matter load in the building, ie in the respective rooms. The set values then determined SET be from the cloud service application CSA or from the web service via an internet connection INT to the HVAC Center 10 forwarded. The latter returns the corresponding control commands directly to the fans 13 and dampers 14 out. The cloud service application CSA or the web service can also be programmed to the respective in the cloud infrastructure CLOUD or in the database DB stored respective particulate matter concentrations PM or a particulate matter alarm FAL as described above to the mobile device 20 transferred to.

In summary, the invention relates to a method and a system for reducing particulate matter in a building, which a HVAC System with ventilation ducts, air filters and controllable fans and louvers for adjusting the amount of fresh air supplied and the degree of filtering the outside air and / or recirculated circulating in the building, and possibly for heating and / or cooling of the building. By means of fine dust detectors, the fine dust concentration in the rooms is continuously recorded and sent to a higher level HVAC Central office. Through this, the fan speed, the filter level of the air filter and / or the rotational position of the air flaps for the outside / recirculating air guide changed on the basis of the fine dust concentrations to reduce the particulate matter. Alternatively, the particulate matter detectors may be IoT particulate matter detectors that store the detected particulate matter concentrations in a cloud infrastructure. It is then determined on the basis of these fine dust concentrations by means of a cloud service application or a web service, a changed fan speed, a changed filter degree of the air filter and / or a changed rotational position of the air flaps for fine dust reduction. The determined setting values are determined by the Cloud service application or web service via an Internet connection to one HVAC Center for adjusting the fan speed, the degree of filtering and the rotational position forwarded.

LIST OF REFERENCE NUMBERS

1

Security control panel, fire alarm panel, panel

2

Fine dust detector

3

Fire detectors, smoke detectors

4

Combination of fine dust detector and smoke detector, fine dust / smoke detector

5

Alarm device (optical, acoustic)

6

acoustic alarm unit (sounder, beeper)

7

visual alarm unit (flashing light, Beacon)

10

HVAC center, management station

11

ventilation ducts

12

Air filter, microfilter, fine dust filter

13

Fan

14

Air damper, air mixer flap

20

Mobile device, mobile device, smartphone

AL

Fire alarm, fire alarm

APP

App, application

CSA

Cloud service application

CLOUD

Cloud infrastructure, computer cloud

DB

Database

DIS

display

DL

Fire Detection Level

FAL

fine dust alarm

GMA

Danger alarm system, fire alarm system

GW

gateway

HVAC

HVAC Plant, HVAC plant

ML

Bus system, detector cable, detector bus

PM

PM concentrations

PRG1, PRG2

Computer program, computer program product

SET

Setting values

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2015/036204 A1 [0009]

Claims (13)

Method for reducing particulate matter in a building, the building having a HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtration of the outside air and / or circulating air circulated in the building, and possibly for heating and / or cooling of the building, - Wherein the fine dust concentration (PM) is continuously detected at least in part of the rooms of the building by means of a respective fine dust detector (2) and transmitted to a higher-level HVAC center (10), and wherein the rotational speed of the respective fans (13), the degree of filtering of the respective air filters (12) and / or the rotational position of the respective air flaps (14) for the exterior are determined by the HVAC control center (10) on the basis of the detected particulate matter concentrations (PM) / Umluftführung to reduce the particulate matter pollution in the building is changed. Method for reducing particulate matter in a building, the building having a HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtration of the outside air and / or circulating air circulated in the building, and possibly for heating and / or cooling of the building, - Wherein the fine dust concentration (PM) is detected continuously in at least part of the rooms of the building by means of a respective fine dust detector (2) and transmitted to a higher-level alarm center (1), in particular to a higher-level fire alarm center, - Where the respective particulate matter concentration (PM) of the alarm panel (1) to a data technically with the alarm panel (1) related HVAC center (10) is forwarded, and wherein the rotational speed of the respective fans (13), the degree of filtering of the respective air filters (12) and / or the rotational position of the respective air flaps (14) for the exterior are determined by the HVAC control center (10) on the basis of the detected particulate matter concentrations (PM) / Umluftführung to reduce the particulate matter pollution in the building is changed. Method for reducing particulate matter in a building, the building having a HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtration of the outside air and / or circulating air circulated in the building, and possibly for heating and / or cooling of the building, wherein the fine dust concentration (PM) is continuously recorded at least in a part of the rooms of the building by means of a respective IoT-capable fine dust detector (2), - whereby the respective fine dust concentration (PM) is stored in a cloud infrastructure (CLOUD), - Based on these particulate matter concentrations (PM) by means of a cloud service application (CSA) or a web service provided by the cloud infrastructure (CLOUD), a changed speed of the respective fan (13), a modified degree of filtering the respective air filter (12) and / or a changed rotational position of the respective louvers (14) for the outside / recirculating air duct to reduce the particulate matter pollution in the building are determined - wherein the determined setting values are forwarded from the cloud service application (CSA) or the web service via an Internet connection (INT) to an HVAC center (10), and - In which case the rotational speed of the respective fans (13), the degree of filtering of the respective air filters (12) and / or the rotational position of the respective louvers (14) is adjusted by the HVAC control center (10) based on the changed setting values. Method according to one of the preceding claims, wherein when exceeding a predetermined limit value for the particulate matter pollution in the respective room of the building, an optical and / or acoustic fine dust alarm (FAL) is issued at least in this in each room of the building. Method according to one of the preceding claims, wherein the particulate matter concentrations (PM) and / or a respective particulate matter alarm (FAL) on exceeding a predetermined particulate matter limit in a particular room of the building via an Internet connection (INT) to a mobile device (20), in particular to a Smartphone, and wherein on the mobile device (20) in particular over the Internet downloadable software application (APP) is executed to represent received particulate matter concentrations (PM) on a display (DIS) of the mobile device (20) and a received Fine dust alarm (FAL) visually and / or acoustically on the mobile device (20) output. Mobile device, in particular smartphone or mobile communication terminal, set up for carrying out the method according to Claim 5 , System for reducing particulate matter in a multi-room building, the system having - An HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtering the outside air and / or in the building recirculated circulating air and, if necessary, for heating and / or for cooling the building, - At least one fine dust detector (2), which is arranged in at least part of the rooms of the building for the continuous detection of a particulate matter concentration (PM), and - A higher-level HVAC center (10), which is connected via a wired and / or wireless bus system at least with the controllable fans (13) and the controllable louvers (14), wherein the HVAC center (10) is set up or programmed on the basis of the particulate matter concentrations (PM) received by the particulate matter detectors (2) via the bus system (ML), the speed of the respective fans (13), the degree of filtering of the respective air filters (12) and / or the rotational position of the respective air dampers (14) for the To change outside / recirculation air flow, to reduce the particulate matter in the building. System for reducing particulate matter in a multi-room building, the system having - An HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtering the outside air and / or in the building recirculated circulating air and, if necessary, for heating and / or for cooling the building, - A hazard warning system (GMA), in particular a fire alarm system, which is installed in the building and which has a security alarm center (1), an at least indirectly connected wired and / or wireless bus system (ML) and at least one fine dust detector (2), wherein the at least a fine dust detector (2) is connected to the bus system (ML) in at least part of the rooms of the building for the continuous detection of a fine dust concentration (PM), and - An HVAC center (10), which is on the one hand data technically for controlling the HVAC system (HVAC) and on the other hand, in terms of data technology connected to the alarm panel (1), the HVAC center (10) is set up or programmed to, based on of particulate matter detectors (2) via the alarm panel (1) received particulate matter concentrations (PM), the speed of the respective fan (13), the degree of filtration of the respective air filter (12) and / or the rotational position of the respective louvers (14) for the outside / recirculation to reduce particulate matter in the building. System for reducing particulate matter in a multi-room building, the system having - An HVAC system (HVAC) with a plurality of ventilation ducts (11), air filters (12) and controllable fans (13) and louvers (14) for adjusting the amount of fresh air supplied and the degree of filtering the outside air and / or in the building recirculated circulating air and, if necessary, for heating and / or for cooling the building, a cloud infrastructure (CLOUD) with a database (DB) and with at least one cloud service application (CSA) or with at least one web service provided by the cloud infrastructure (CLOUD), an HVAC center (10) for controlling the HVAC plant (HVAC), the HVAC center (10) being connected to the cloud infrastructure (CLOUD) via an internet connection (INT) and being programmed to provide current setting values for the HVAC plant Speed of the respective fan (13), for the filter degree of the respective air filter (12) and / or for the rotational position of the respective louvers (14) from the cloud service application (CSA) to receive and with these the respective fan (13) and air dampers (14), at least one IoT-capable particulate matter detector (2), which is arranged in at least part of the rooms of the building for detecting a fine dust concentration (PM) and is adapted to a continuously detected particulate matter concentration (PM) via an Internet connection (INT) in the database ( DB) of the cloud infrastructure (CLOUD), and the cloud service application (CSA) or the web service which is programmed, based on the fine dust concentrations (PM) stored in the database (DB), a changed speed of the respective fans (13), a changed filter level of the respective ones Air filter (12) and / or to determine a changed rotational position of the respective louvers (14) for the outside / recirculating air guide, thereby reducing the particulate matter in the building. System according to one of Claims 7 to 9 , wherein a respective fine dust detector (2) has an optical and / or acoustic alarm transmitter unit (6, 7) and is set to issue a visual and / or acoustic fine dust alarm (FAL) when exceeding a predetermined limit value for the particulate matter pollution in the respective room of the building. System according to one of Claims 7 to 10 , Wherein the functionality of a fine dust detector (2) is integrated into a functionally expanded particulate matter / smoke detector (4) as a combined structural unit. System after Claim 11 wherein the combined particulate matter / smoke detector (4) is adapted to transmit a continuously detected particulate matter concentration (PM) at least indirectly to a higher level HVAC center (10) and wherein the combined particulate matter / smoke detector (4) is arranged to in the case of a detected fire a fire alarm (DL) to a higher-level alarm panel (1), in particular to a fire alarm control panel issue. System after Claim 11 in which the combined particulate matter / smoke detector (4) is an IoT-capable particulate matter / smoke detector (4) and is set up to continuously collect a particulate matter concentration (PM) to a cloud service application (CSA) or to a web service, provided by a cloud infrastructure (CLOUD), to transmit or to store in a database (DB) provided by the cloud infrastructure (CLOUD), and wherein the combined particulate matter / smoke detector (4) is adapted, in case of a detected Fire a fire alarm (DL) to a higher-level alarm panel (1), in particular to a fire alarm panel issue.

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