A new hybrid intelligent system is proposed for Heating, Ventilation and Air Conditioning (HVAC) control by integration of Multiagent System (MAS), Dynamic Ontology (DO) and Ant Colony Optimization (ACO). The relevant combination between data driven and knowledge driven methods results in significant improvement of all behavioral indexes of HVAC control system – speed, stability, internal commu...

In this paper, the problem of distributed control of the heating, ventilation and air conditioning (HVAC) system in an energy-smart building is addressed. Using tools from game theory the interaction among several autonomous HVAC units is studied and simple learning dynamics based on trial-and-error learning are proposed to achieve equilibrium. In particular, it is shown that this algorithm rea...

This paper investigates the interaction between supermarket heating, ventilation and air conditioning and refrigeration systems through simulation in EnergyPlus. This interaction has been studied by modelling a generic UK supermarket. The impact on the sum of HVAC and refrigeration energy consumption due to changes in a range of operating conditions was studied. These include the effect of alte...

Faulty operations of Heating, Ventilation and Air Conditioning (HVAC) chiller systems can lead to discomfort for the occupants, energy wastage, unreliability and shorter equipment life. Such faults need to be detected early to prevent further escalation and energy losses. Commonly, data regarding unforeseen phenomena and abnormalities are rare or are not available at the moment for HVAC install...

In this paper, we report, for the first time, experimental results on channel capacity of heating, ventilation, and air-conditioning (HVAC) ducts based on multi-carrier transmission technique and measured channel frequency responses in the 2.4 GHz Industrial, Scientific, and Medical (ISM) band. Experiments using actual synthesized signals through a building HVAC duct system demonstrate the abil...

Even though many approaches have been proposed for automated fault detection and diagnosis of Heating Ventilation and Air Conditioning (HVAC) systems, and advanced maintenance programs, such as preventive and predictive maintenance have been applied for the systems, issuing work orders for corrective maintenance is still a reality. Currently corrective maintenance still accounts for more than 5...

Heating, ventilation and air-conditioning (HVAC) is the largest consumer of electricity in commercial buildings. Consumption is impacted by group activities (e.g. meetings, lectures) and can be reduced by scheduling these activities at times and locations that minimize HVAC utilization. However, this needs to preserve occupants’ thermal comfort and be responsive to dynamic information such as n...

A novice method for calibrating the transient model of an automotive HVAC system is presented in this paper. Transient models can be of great importance in the development process of automotive HVAC control algorithms, especially model based ones, as it saves both time and effort. However, the calibration process is usually difficult and relies heavily on experience due to the complexity of the...

In this thesis a component-based framework for the evaluation of HVAC performance in buildings is developed. Following the method of the demand development HVAC systems are evaluated by means of their energy effort during planing and maintenance. The evaluation is achieved through: determining the energy requirement and energy requirement's impacting factors using a building simulation determin...