Open Issue V3I2 - Williams et al

Open Issue V3I2 - Williams et al | Journal of CESaRE

The Journal of Caribbean Environmental Sciences and Renewable Energy (CESaRE) was developed in 2016 out of a recognized need to modernize and revolutionize the Caribbean's scientific research publishing. There are over 170 Caribbean research publications in the past 5 years falling under the broad field of environmental sciences, found scattered over a large variety of International journals, without a central (Caribbean) location to collate this knowledge. With the global shift towards renewable over traditional energy sources, together with a rise in environmental consciousness, this a perfect opportunity for highlighting such research conducted in the Caribbean. CESaRE will provide a suitable forum to encourage research into renewable energy, as well as the environmental sciences. CESaRE promises to be more than just a collection of articles, but also a forum to disseminate information and bridge the gap between research and implementation, from which Caribbean leaders, relevant industry partners, and authorities can use our Journal for more effective decision making and environmental management.

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Alternative Energy & Industry

Development of Lora P2P Network for Autonomous Seawater Quality Monitor for Green Powered Desalination Project

Zachary Williams ¹, Jean-François M ². Dorville, Michael A. Taylor ³
^1,3 Department of Physics, University of The West Indies, Kingston, Jamaica
² The Caribbean Geophysical and Numerical Research Group, Baie-Mahault, Guadeloupe

Vol. 3, Issue 2, 2020. DOI: 10.33277/cesare/003.002/01

ABSTRACT

Scarcity of freshwater pushes countries impacted by climate change to investigate new sources of supply. Desalination plants powered by renewable energy can be the solution for a tropical developing country. Collection and treatment of seawater to produce freshwater generate an imbalanced water mass. In the case of a Reverse Osmosis Desalination Plant which pumps seawater to produce freshwater and brine as waste, the most important factor is the seawater quality, only available by observation. The design of a plant and its execution will depend on factors such as ambient temperature, salinity, and TDS. The main needs for a good multi-probe marine observation system are low energy consumption, simple monitoring, and coverage of a large area. For the sake of autonomy and ease of use, a functional and robust circuit can be set up using calibrated probes, micro-controllers, and small programmable boards. The use of programmable boards and connected probes are set up as network ‘nodes’ to send in-situ data measured from the water body. These nodes send the data using radio signal with LoRa protocol to a ‘gateway’ to store or transfer them. The parameters were measured at different time intervals, water depths, and distances from the coastline to observe how said factors affect the measurements. The results from the data collected are used to compare ocean modelling and satellite data. We present in this study the implementation of a long-range wireless autonomous sensor network and first validation tests in Jamaica and how it fills lack of information for a desalination project. Results indicate a good correlation between measure, modelling, and remote sensor. LoRa P2P network allows at an affordable price continuous monitoring of remote areas with great autonomy and resilience; results showed a successful transmission of >80% within the network.

KEYWORDS

Desalination, Seawater, Water Quality, Monitoring, LoRa

The Caribbean may face water resource issues with increasing climate stresses, but how can innovative monitoring complement desalination projects in the region to enhance resource security? Williams et al. explore these issues through their recent paper.

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