Reducing the energy consumption of a conference centre - a case study using software

Efficient HVAC control is often the most cost-effective option to improve the energy efficiency of a building. However, the effect of changing the control strategy (i.e. on indoor comfort and energy consumption) is usually difficult to predict. To obtain this information more easily, a new simulation tool, QUICKcontrol, was developed. This new tool was then used to investigate the energy savings potential in a Conference Centre. The influences of fan scheduling, setpoint setback, economiser cycle, new setpoints, fan control, heating plant control, lighting control and various combinations thereof was investigated. The simulation models were firstly, verified with measurements obtained from the existing system to confirm their accuracy for realistic control retrofit simulations. With the aid of the integrated simulation tool it was possible to predict savings of 744 MWh per year (32% building energy saving and 58% HVAC system energy saving) by implementing these control strategies. These control strategies can be implemented in the building with a direct pay back period of less than 6 months. (C) 2002 Elsevier Science Ltd. All rights reserved.