Internet of Things

Monitoring Cooling towers & HVAC (Heating Ventilation and Air Conditioning) systems with the aid of IoT and LoRaWAN technology. The experimental assessment is calculated by Matlab.

Keywords: Internet of Things, LoRaWAN, HVAC, Cooling Tower, Matlab.

•Problem:

•Monitoring and measuring the water consumption

•Greenhouse Gas emission

•Water contamination

Solutions:

CO2 meter
Flowmeter
PH meter

•Measurement of water consumption to save water

•Measurement of Co2 emission to prevent greenhouse gases

•Measurement of PH and acidic level of water during the cooling process

Cost:

Flowmeter 653 EUR
Ph meter 45 EUR
Co2 meter: 98 EUR
Transceiver 10 EUR

Total Cost 806 Euro per building

Annual Greenhouse Gas emission on sector

Market:

•Every large city and especially Milan City due to the high number of cooling towers used for commercial and residential buildings.

•Milan area= 181.8 km²

Technical assessment:

Experimental assessment:

•N = 150 node

•1 transmission / hour

•9 Antenna

•Area 181.8 km²

•Spreading factor = 12

•Payload size = 6 bytes

•BLER (avg) = 7.51 s

•Average latency = 2.33 s

•Time on air = 1318.9 ms

Architecture :

Benefits:

Electric energy reduction up to 30 %
Easy implementation
Applicable for any cooling tower model
22 % of average water saving
36 % of Co2 reduction every year

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