PPM Technology

PPM Technlogy's IAQ Monitors enables a more effective air-conditioning system.

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Source: PPM Technology

The most accurate way to monitor a building's Indoor Air Quality is by continuously monitoring  a number of parameters that contribute to a building's indoor air quality. PPM Technology's Wireless IAQ Profile Monitor system can continuously detect, measure and record a number of customer specified parameters, including Temperature, Humidity, Nitrogen Dioxide, Carbon Monoxide, Carbon Dioxide, Sulphur Dioxide, Ozone, Ammonia, Formaldehyde, Chlorine, Glutaraldehyde, Methane and TVOC’s.

The wireless system can integrate with the building automation system as dedicated software allows an entire wireless system to be managed and controlled from a single PC. The software can set parameters for temperature, humidity, and concentrations of hazardous gases, which can then activate and control the air-conditioning and ventilation systems. It can also turn heating on and off, and as a last resort trigger building alarms.

The fact the monitoring system can connect and control third-party systems—such as air-conditioning unit can ensure a more effective air-conditioning or ventilating system, this would also have a positive impact on the environment. It would take care of human comfort, energy conservation, cost effectiveness, and health of the occupants inside the building. To ensure the preset targets of air quality are met, but not over- or under-provided, signals from real-time monitoring to control the air-conditioning and ventilation systems could be used. It can help avoid energy and resource waste due to better control of the air-conditioning system.

To dilute the indoor air pollutants, a good ventilation system must be in place. An over-ventilated air-conditioned building is not energy-efficient. It is a difficult balance to save money and energy, yet maintain a comfortable and healthy environment. Therefore, the logical solution to controlling indoor air pollution is good ventilation coupled with IAQ monitoring using sensors.

A recent trial setup of a wireless IAQ monitor system was held in Honk Kong; the data was collected at regular one-minute intervals using four IAQ monitor units for four consecutive days. The units were placed in various locations around the building for a wider analysis of the buildings indoor environment. The information gathered was automatically stored onto the controller PC connected to the wireless mesh system that had installed the software.

The results gathered from the test demonstrated that much could be done to save energy, thus reducing the building’s CO2 emissions. The power required to air-condition a 50-story office building—such as the one in which the test was conducted—can easily exceed 10 million kWh per annum. Equipping a building with an IAQ monitoring system can provide building service professionals and facility managers with the data they need for effective air quality management within the building.

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