Energy Efficient and Effective Control Strategy of HVAC System in Large Shopping Complex

HVAC systems control the temperature, humidity and air circulation in shopping malls. In these systems generally there is one main controlling unit as the Ventilation and Air-conditioning units are centralized. HVAC system consumes bulk amount of energy and idle consumption in a centralized system is always greater than the distributed system where each and every unit could be controlled separately. In present scenario, the HVAC systems installed in large shopping mall could not provide sufficient amount of oxygen and fresh air, and failed to maintain the desired temperature across the various zones where, crowd is more than the normal. For example a feeling of suffocation and more humidity are felt predominantly at the overcrowded locations like at the front of the payment counter or at the POS where large discount has been announced. In this paper the problem is identified and a suitable control system has been suggested to cater a better comfort and control over entire zone with reduced consumption of energy. In this proposed scheme the control system dynamically adjusts to the changing Building environment and load (number of Occupants and Sources of heat like lighting load, Electronic gadgets, Electronic Displays, computers, kitchen etc.). An automatic and effective Energy saving scheme has also been proposed without compromising with the comfort level of the occupants.