Agriculture
Understanding The Problem

CO2 is produced when people breathe. Each exhaled breath by an average adult contains 35,000 to 50,000 parts per million (ppm) of CO2 – 100 times higher than is typically found in the outside air (OSA).

The CO2 concentration in an occupied indoor space indicates if the building’s air exchange balance is appropriate – that is, if the optimal amount of OSA is being mixed with air that has been circulating in the building


Understanding The Problem

CO2 is produced when people breathe. Each exhaled breath by an average adult contains 35,000 to 50,000 parts per million (ppm) of CO2 – 100 times higher than is typically found in the outside air (OSA).

The CO2 concentration in an occupied indoor space indicates if the building’s air exchange balance is appropriate – that is, if the optimal amount of OSA is being mixed with air that has been circulating in the building


What is CO2?

CO2 is a natural component of the atmosphere. The amount of CO2 in an air sample is expressed as parts per million (ppm) – the number of CO2 molecules per million molecules of air. The CO2 levels in the air outside a building are usually 380 ppm or higher, depending on:

• Local conditions – vehicle traffic, industry and other sources of combustion.

• Weather conditions – wind and temperature inversions can cause combustion gases to build up in a local area.

An elevated indoor CO2 concentration is directly related to the number of occupants in the building, the building’s ventilation rate, and the CO2 level in the outside air. Indoor CO2 can accumulate if ventilation is not adequate to dilute and remove the CO2 that is continuously generated by building occupants

How does Think Air help?

The Think Air node is a low cost Air quality node capable of LoRaWAN, 3G, Wired or WiFi connectivity,  equipped with a Multi-sensor modular unit that can integrate into existing Think AIr networks.

The node offers extremely accurate PM10, PM2.5, CO1, NO2, C2H6OH, H21, NH31, CH4, C3H8, C4H10, temperature and  humidity readings confined within a small solar powered unit. 

The unit is calibrated against AURN monitoring networks to ensure the values displayed have correlation that parallels that of the current government reporting network.


How much CO2 Is too much?

Current ventilation guidelines, such as those from the Society of Heating Refrigerating, and Air Conditioning Engineers, recommend that indoor CO2 levels not exceed the local outdoor concentration by more than about 650 ppm. Good practice indicates that the ASHRAE Standard 62.1 target CO2 level in indoor air is about 1,030 ppm given the outside average of 380 ppm. It is important to adhere to these guidelines.

The performance of individuals in schools and offices with elevated CO2 concentrations can be affected because occupants may become lethargic and drowsy. Additionally, as CO2 builds up, so do other indoor air contaminants, which increases occupants’ exposures to irritating, distracting and potentially unhealthy gases and particulates


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