Buildings as a preventive barrier against COVID-19

Situations like COVID-19 are not isolated episodes

In the last 17 years, there have been at least 6 outbreaks (including the current one) capable of affecting the global population (SARS, MERS, Avian Flu, ZIKA and EBOLA).

Measures to prevent spread through aerosols

Valuable work can be done by improving the indoor environmental conditions of office buildings to prevent the impact of situations like COVID-19.

Transmission of SARS-CoV-2 by air is sufficiently likely that airborne exposure to the virus must be controlled. Changes in the way buildings operate, including air conditioning and ventilation systems are required.
The airborne spread of pathogens occurs through droplets and aerosols produced when talking, coughing, breathing, etc.

Gravity causes large droplets to fall and settle on surfaces; however, the smaller droplets remain in the environment and can infect other hosts. Infectious aerosols can spread through the building via air distribution systems.

Constant and monitored indoor air management helps combat infectious aerosols and the most common pollutants.

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Air Quality Monitoring System

What is SMoCAI®?

SMoCAI® is an air quality monitoring system based on Cloud software, with Big Data analysis, easy to configure and user-friendly.

It offers continuous real-time measurement of CO2, PM2.5, PM10, TVOCs, temperature and humidity levels, from sensor modules distributed throughout the building, with wireless connectivity on an encrypted network.

The SMoCAI® algorithm analyses continuous exposure data for pollutants in the environment and provides an air quality index.

Main functions

SMoCAI® systems allow you to:

  • Know and continuously measure the different variables of indoor air quality (IAQ) of a building.
  • Inform administrators and managers, in real time and in a predictive manner, about the state of IAQ for decision making and actions on the ventilation, air conditioning and air purification systems.
  • Provide information about IAQ parameters, and a comparison with outdoor air, to building users and occupants.
  • Have an expert IAQ system available.
  • Facilitate annual RITE reviews on IAQ.

Distributed sensors with continuous monitoring

User interface with public display in building

Mobile access to data for occupants

BACnet integration with building

The ecosystem

SENSORS

  • Continuous 365-day monitoring
  • Distributed monitor system
  • Easy and low-cost installation
  • Multiple sensors:
    TVOCs, PM2.5, PM10, CO2, TEMP, RH
  • Environment and duct housing
  • Zigbee wireless connectivity

BIG DATA ALGORITHM

  • Storage
  • Database with Big Data Algorithms
  • Comparative Big Data algorithms to avoid
    false alarms due to absolute comparisons
    -> Accumulated Exposure vs Immediate Data
    (Main disadvantage of current systems)
  • Rotating comparison mode Internal + External
    IAQ under algorithm.

UI (USER INTERFACE)

  • Cloud platform
  • Web / Mobile Interface
  • Public displays for occupants
  • Technical displays for operators
  • Mobile access with QR code to WebAPP
  • Customisable look and feel

INTEGRATION

  • BACnet protocol
  • Integration with BMS
    (Building Management Systems)
  • HVAC adjustment possible on demand

Advantages

Information system for occupants

Display to publicly show the air quality values in the building to occupants, on one or more screens.

Mobile Access

The interface gives occupants of the building access by scanning QR codes with mobiles or tablets so that they remain informed at all times.

Cloud-based

Data is stored in the cloud for representation in the graphical interface, thus avoiding data loss.

Minimal installation

The sensor modules only require a 230VAC power connection. Wireless communication between sensors and hubs. Hubs only require connectivity to an Ethernet point or 3G SIM card (optional).

Online monitoring

Data is stored in the cloud for representation in the graphical interface, thus avoiding data loss.

Multiple platforms

Data can be accessed from any Internet browser and the responsive interface can be used on mobile, web and tablet devices.

Big data

The system allows, by means of a Big Data analysis algorithm, the display of the continuous exposure data to the different pollutants that are present in the environment and gives an air quality index.

Alerts

Allows you to configure email alerts whenever the air quality reaches a level at which action is required.

BMS connectivity

The BMS connectivity gateway is integrated into the building system, using open standard protocols, to control HVAC systems, saving energy and ensuring adequate ventilation.

Compliance with standards

The SMoCAI® system enables buildings to comply with Well Building Standard V1 and V2.

¿Qué nos dice la comunidad científica?

La relación entre una mala calidad de aire y la propagación del COVID-19

8%

Hemos observado que un incremento de 1 μg / m³ en PM2.5 está asociado con un aumento del 8% en la tasa de muerte por COVID-19”

Conclusiones
Un pequeño aumento en una larga exposición a PM2.5 conlleva un incremento de la tasa de muerte por COVID-19.

Fuente: Xiao Wu et al, Exposure to air pollution and COVID19 mortality, Harvard University 2020

Cómo la mala calidad de aire interior puede aumentar la propagación de los virus

¿Qué datos recopilar?

Recomendados por el Well Building Institute

• PM2.5 < 15 μ / m³
• PM10 < 50 μ / m³
• Monóxido de Carbono (CO) < 9000 ppb
• Dióxido de Nitrógeno (NO2) < 100 ppb
• Ozono (O3) < 51 ppb

La relación entre el nivel de ocupación y el aumento de CO2

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