Hogar Santa Rita Foundation of Puerto de la Cruz in Tenerife, with a partial subsidy from the Ministry of Employment, Industry and Commerce of the Canarian government has renovated its hot sanitary water facilities. And this has been achieved by installing solar collectors on the roof, allowing the Home to obtain significant savings on their energy bills and to supply with this type of energy the 522 accomodations of the building housing the elderly and poor.
Prior to this installation, hot sanitary water demand was covered with propane gas boilers. With the renovation, 75.5% of the hot sanitary water and conditioning of the resort”s swimming pools needs are covered with solar energy production, 767,865 kWh / year, which translates into about € 100,000 annual savings and a significant reduction in CO2 emissions to the atmosphere.
To achieve this, 110 solar collectors and 8 m3 accumulation capacity were placed in the main building, 36 solar collectors and an accumulation capacity of 4 m3 in the second building, with the other 60 collectors located in the spa area to heat a 400m3 indoor swimming pool whose temperature ranges between 28 o and 29 o and a 100 m3 jacuzzi where the temperature is kept constant between 33 o -34 o. Thanks to their hydraulic design, the collectors can work at low-flow without compromising performance, thus reducing the size and cost of installation.
A total of 206 Vaillant auroTHERM VFK 145 solar collectors have been installed. This model is designed for installations seeking great savings and high performance levels.
Tenerife municipality expects to collect 37,000 euros from solar energy
Furthermore, Hogar Santa Rita is not the only facility in the island that has recently joined the solar energy. The mayor of Los Realejos, Manuel Dominguez, has promoted the use and sale of energy generated by the municipally- owned solar panels located at the Town Hall and the Sports Pavilion in this Tenerife vicinity, that after having been implemented years ago still were to be exploited. Dominguez noted that “it is a measure that aims to meet two objectives, adapting to clean energy as the most sustainable and environmentally friendly energy future, and generate significant savings for municipal Treasury because now, based on the current technical parameters and prices, this initiative will provide the city council of Los Realejos around 37,500 euros of revenues per year. ”
The city council”s photovoltaic plant with a solar field comprised of 144 polycrystalline solar photovoltaic panels has a nominal output of 30 kW. The power plant installed in Los Realejos municipal Sports Pavilion rooftop has a nominal output of 95 kW with the solar field composed of 456 polycrystalline solar photovoltaic panels.