Life-cycle optimization of building energy systems for improving energy efficiency of today's buildings and future buildings

The energy consumption of buildings has increased rapidly worldwide in recent years. Building energy systems usually do not work as efficiently as intended practically. This presentation will highlight of optimization approaches in the building lifecycle, including probabilistic optimal design considering the uncertainty and the flexibility/adaptability of commissioning, on-site adaptive commissioning as well as optimal and energy efficient control. Optimal control strategies are developed and implemented to allow the system operate at high energy efficiency at ever-changing load and working conditions. These optimization methodology and technologies are implemented in many new and existing buildings with energy saving ranging from 15% to 40 %.

Power grids today are facing great challenges on power balance and reliability. Smart grid is a solution to address these problems by involving all parties of the power grid to contribute to the grid power balance. Future buildings should have one more feature, e.g. grid-friendly and grid responsive. They should be grid-friendly and work in synergy with the grid, avoid putting additional stress on the balance of power grids; and should be grid-responsive and to optimize the overall efficiency and reliability of the grid-building ecosystem for the benefits of smart power grids and buildings. The collaborative research grid-friendly and grid responsive building design and control will be reported in this presentation.