Energy efficiency in built environment – a key intervention

CSE has played a major role in augmenting energy efficiency in built sector over the years. It served as part of the advisory committee on formulation of Energy Conservation Building Code 2017 and influenced the code for improved operations and effectiveness.

CSE had suggested to reduce the Window Wall Ratio from 60 per cent to 40 per cent to reduce glass use in building facade. The new ECBC codehas set temperature threshold for Heating Ventilation and Air-conditioning (HVAC) design to prevent energy penalty. A benchmark now requires operational energy efficiency of appliances to be a minimum 3-star rating based on Energy Performance Index (EPI) of the building. The contribution has resulted in introduction of three performancelevels for buildings i.e. (from least to most) ECBC compliant, energy efficient and super energy efficient along with stringency on heat transfer norms.

CSE’s research and advocacy on air-conditioning has been acknowledged by Bureau of Energy Efficiency (BEE), which has changed its testing methodology to the one that tests inverter ACs on different temperature range. CSE is part of BEE’s committee on new room AC standards and has enabled adoption of a new Indian Seasonal energy Efficiency Ratio (ISEER) rating system.