building energy efficiency

Air leakage in building envelopes is responsible for a large portion of the building’s heating and cooling requirements. Therefore, fast and reliable detection of leaks is crucial for improving energy efficiency.

The energy performance of solar-control film on single window glass is analyzed through in-siteexperiment measurement. The solar optical properties and the heat transfer characteristics of theglazing with solar-control film are discussed in detail. An experiment was carried out to compare theenergy consumption and day lighting level between two hotel guest rooms with and without solarcontrolfilm. The theoretical and experimental results have a good agreement in the energy saved bysolar-control film.

EECCAC is an EU funded project, where twelve participants (National Energy Agencies, Manufacturers, University laboratories and Electric utilities) from eight countries gathered to identify the most suitable measures to achieve market transformation in the direction of energy efficiency of central air conditioning systems in Europe. Within the project, some energy efficiency options (EEO) have been analysed, and a summary is presented in this paper. After setting some starting points for building, climate and simulation engine, we will present the list of HVAC system EEO covered.