Solar powered systems save energy, reduce the CO2 emissions of the building and lead to an economic saving that facilitates their amortisation, especially in hotel installations characterised by high and more or less constant levels of DHW consumption all year round. However to achieve this, these systems have to be well-designed, simple structures using reliable and efficient technologies and equipment that minimise necessary maintenance actions.
For example, for a 4-star hotel with an occupancy of around 100 people a day, a solar installation could be designed to cover 60% of the needs arising from DHW demand by installing a solar powered system with a working surface area of about 60 m2 and 4,000 litres of accumulation. The energy obtained through this clean and renewable system would represent a saving in fuel that, in the case of natural gas, would amount to almost 2,700 € per year and would avoid the emission of 17,254 kg of CO2 per year into the atmosphere. To achieve these savings values, the equipment and the type of system to be implemented have to be very carefully selected to protect the solar installation from its main risks: over-heating and freezing.Read more…
ACV, Technical Director
Article published in: FuturENERGY June 2015