Solar Water Heater live data stream

24-hour Data

48-hour Data

7-day Data

For a different period than those above, use the historical study tool

Description of the live monitoring project of a solar water heater in Greece

A microcontroller was installed on a Greek-made solar water heater, which collects and transmits live data to the internet, such as the temperature of the tank (boiler), air temperature (atmosphere), brightness (light intensity via LDR), as well as a web camera showing the horizon in real time to clearly display the environmental conditions at the experiment’s location. For the needs of the live monitoring of the solar water heater, an online data logger (IoT datalogger) based on ESP8266 was developed. The solar water heater is installed in an area with low sunshine based on statistical data (Ioannina Prefecture) at an altitude of about 600 meters and is used by a family of four (2 adults, 2 children). It has a capacity of 160 liters and a collector surface area of 3 square meters (2 collectors). An important point is that compared to the rest of Greece, the location where the Solar LIVE system is installed receives the least amount of sunshine according to the sunshine statistics for Greece. Due to the surrounding large mountainous masses, the sun is not available even for quite some time after sunrise.

Data recording began in 2023 on a trial basis and after the desired reliability was confirmed, it has been operating continuously since February 2024.

With the Solar LIVE data, we can examine any time period we want and have all the necessary data for analysis. Nowadays, almost all devices have WIFI connectivity, allowing us to remotely view data from them, which is great. One problem that arises is that usually this data is stored via CLOUD on unknown servers, with access to our device data neither guaranteed nor detailed over long periods. Solar LIVE stores the data in a private database with over 300,000 measurements per year and allows everyone to process and extract useful conclusions via this website. A DIY IoT data logger functions as defined by its creator and can support sensors of choice that commercial ready-made products may not include.