Elco References E

The new system For the Olympic Games of 2008, Peking put full emphasis on sustainability – and decided to utilise renewable energy. The challenge was a stiff one: for the 18,000 occupants, some 860,000 litres of warm water had to be provided every day – round the clock. ELCO rose grandly to the occasion, and a solar warm water system of unprecedented size was imple- mented. ELCO installed AURON 20 vacuum-tube collectors, with a total area of around 7,500 m² installed on the roofs. A further requirement was that the warm water system should provide comparable performance all year round when the Olympic Village was later used as a private residential complex. The system is not only technically mature; it is also completely tailor-made. The local heat-distribution network consists of 5 heating stations. The well-thought-out distribution of the sensors and the intelligent control technology ensure that the solar plant, from the collector to the warm water tank, can be seamlessly monitored and controlled via a central monitor, and corrected if needed. The system has an active anti-frost function and an overheating-protection mechanism. The system installed by ELCO, which is the largest in China to date and is built to German standards, saves up to 65 % of con- ventional energy. This means that 325,000 litres of oil are saved, and some 2,978 tonnes of CO2 are avoided. The system ensures a reliable supply of warm water, the average water temperature of 50°C being guaranteed round the clock. As an innovation, the warm water is thermally disinfected once a day by increas- ing the temperature, thus effectively counteracting the danger of legionella bacteria. The system was inspected and approved by the National Solar Inspection Centre, and also received a “LEED certificate” as the most environmentally friendly high- tech project with the “Green Olympic Village” award. New construction project: Olympic Village, Peking China’s most modern solar heating project: Energy from the Sun; technology from ELCO Savings • Energy savings of up to 65 % • Savings of 325,000 litres of oil a year • Reduction of CO2 emission by 2,978 tonnes a year • Savings of 5 mill. kWh electricity or 0.6 mill. m³ of gas a year Equipment Tube collectors Rated output AURON 20 DF (direct flow tube collectors) number of pieces: 2,187 600,000 – 860,000 litres warm water production daily