2020-08-08

IOT analytics and sensors are here for maintaining purity of air in schools and offices

Article Edited by | Jhon N |

Image:-IOT

To reduce the likelihood of a spread of corona virus indoors. Advanced building controls can help to keep the air safe and clean.

The risks of the spread of the corona virus must be reduced by different behaviours, and building managers must change. Things technology Internet can contribute to increasing the fresh air flow, the air filter, and the transport analysis in a building. Building managers can use sensors, data and analytics to safely enable children to return to school in person and to re-see their employees.

Chris Kwong, CTO of Delta Controls, said that building inspections have evolved from an energy efficiency focus to enable building managers to decide how people use space.

"We have been able to connect various systems, collect more data and analyse more in a building in order to build more intelligence," he said.

For schools to manage heating and cooling to satisfy various requirements, an IoT sensor network can be cost efficient. Connectivity is the key both to collect and act on this data.

"You won't have to redesign the building, just look at it in an affordable way," said Andrew J. Tanskey, US Offer Manager at Schneider Electric's EcoStruxure Edge Services and Advisers.

The World Health Organisation recommends that schools and jobs increase their ventilation rate, without recirculating air, in order to reduce the chances of corona virus spreading indoor spaces. WHO recommends that windows be opened when possible and safely, that the external air content be increased to 100%, that central air filtration be better operated and that the HVAC system should operate for a maximum of two hours before and after outside air flow.

Tanskey said 100 percent outdoor air in the air circulation system of a building is easy to use, but it is very expensive to do so, especially in the winter in the North. Tanskey said that understanding how to use the data to guide operations in a certain building is the key to success with such devices.

"We now allow the sensors, data and the building to determine when and where maintenance is required."

By monitoring how many people in the particular space, sensors can monitor carbon dioxide levels and facilitate the management of social distancing requirements. Building managers can use IoT platforms to respond room by room to real-time events.

"The greater the amount of granular control you can have, the more effective you can be operational," he said.

In one classroom and far too many people in another, Tanskey used an example of air quality.

"Classroom A does not have enough air changes to increase the air quality immediately and Class B is designed to accommodate 15 students in a socially distant environment, but the technology contains 18 sensors," he said. "This is where the management of operational change comes in."

Delta Controls' kwong said building managers consider how frequently in a certain time, they can refresh the air in a room or building. This could mean the recirculation of air from the building or fresh air from outside. Building managers can also use HEPA filters to run in the air or expose UVC air to remove the contamination and germs.

Building systems with a right combination of sensors and data analysis enable managers of facilities to strike the right balance between cost management and the use of air traffic practices to reduce the risk of corona virus spread.

In recent years, Delta Controls has developed more touch-less products, including a thermostat unit which fits into the room ceiling, rather than a wall.

"It was with a collection of other techniques that we shifted the thermostat into the ceiling, in order not to touch them and giving us a good view point to make more sensory at the ceiling," he said.

This data is collected in the O3 Sensor Hub of the company and used an application or a dashboard to display air flow, CO2, and noise levels. In a room, the platform can also control shutters and lighting.

Robert Hemmerdinger, Delta Controls CEO of Sales and Marketing, stated that the company had prioritised the flexibility of the platform and would work in buildings built prior to internet connectivity.

"They will look for this flexibility to change it by pressing a button and to get an estimate of the cost of the change when construction engineers design facilities," Hemmerdinger said

He added the retro-activity of new platforms , allowing new technology to connect to existing facilities.

Based on these IoT platforms and the resultant data streams, IT teams have been involved more with building management, said Kwong.

"People who have more mechanical and electrical skills need to increase their IT skills, but re-education goes both way, as IT people don't want to be held accountable for things they don't understand.

Delta Controls based in Vancouver works in health , education, commercial real estate and airports with 400 distributors and customers.