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The French company Sirea has installed one of its energy management systems on a PV system on the roof that is connected to an air conditioning system at a school on the island of Reunion. The system can help manage four real-time measurement points: photovoltaic production, extraction and feed into the distribution network, consumption of cooling devices and building consumption.
February 5, 2021
From pv magazine France
In 2020, the Gaïa Group, a solar specialist from the French overseas department of Reunion, installed a 36 kWp solar PV system on the roof of the Saint Leu school as part of the island’s grid measurement system.
The Reunion-based company also installed an air conditioning system with a cooling capacity of 72 kW, using the know-how of the French energy efficiency specialist Sirea for energy management and optimization of the system.
Sirea provided its SmartEMS technology to control the air conditioning based on the available photovoltaics. “We needed an energy manager that was compatible with the various devices in the facility and flexible enough to offer bespoke management that came as close as possible to the needs of the school,” said Étienne Bernard, Operations Manager at Gaïa Photovoltaic.
The control system managed by Sirea PLC and installed by the Gaïa team is based on four real-time measurement points: photovoltaic production, extraction and feed into the distribution network, consumption of cooling devices and building consumption.
The SmartEMS can perform these processes as well as control the target temperatures of the indoor air conditioning systems. According to the manufacturer, this intelligent device enables the user to manually start or switch off any of the 12 indoor air conditioners and work in a set temperature range between 24 ° C and 26 ° C. In the event of a photovoltaic deficit, the controller thus acts on the setpoint temperature. It is also ordered to turn off all air conditioning at 8:00 p.m.
It is claimed that the self-consumption controlled by this SmartEMS makes it possible to significantly reduce the power consumption from the network while providing controlled flexibility. In addition, due to its geographical location, this project uses a strong photovoltaic potential all year round between 9:00 a.m. and 3:00 p.m. and thus overlaps with the air conditioning needs of the users.
Overall, the project developers believe that controlling the air conditioning is a smart choice that allows the Saint Leu School to set an example of energy efficiency.
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