The energy diagnosis of buildings (or energy audit) highlights what the building’s energy problems are and simultaneously highlights the most effective interventions for reducing the building’s heat demand. Through energy diagnosis, energy consumption is examined from both quantity and quality aspects, that is, where and how energy is used.
The energy audit begins with an analysis of historical consumption found in utility bills. The investigation then continues with the analysis of temperature and humidity measurements in the rooms. Next, the characteristics of the envelope (fixtures, floors, exterior walls) and those of the systems present (heating, domestic hot water production, cooling) are examined. Finally, measurements of outdoor temperatures and humidity, which greatly affect energy consumption, are considered.
In thermal engineering with the help of dynamic simulation software, models are created that realistically and in detail simulate climatic conditions, plant utilization, and dispersion. This allows you to compare alternative solutions by understanding what changes by making various modifications. The diagnosis is then accompanied by an estimate of the economic return on theproposed interventions .
As with private buildings, energy audits are crucial for industrial facilities as they identify solutions to reduce companies’ energy consumption by optimizing the consumption of electrical equipment (through the installation of inverters or power factor correction devices) or by harnessing the heat produced during the work cycle.