The master thesis deals with the development of a computer program for forecasting the necessary heat for the reheating of the air in a mechanical ventilation system. We showed the process of the creation of a computer program, based on the hourly variation of outdoor air temperature, and the operating schedule of the mechanical ventilation device. In the process of creating the computer program, the requirements of the relative technical regulations and standards of the internal environment were taken into account. We performed measurements of all the parameters that had an effect on the required heat for the reheating of the inlet air on the selected mechanical ventilation system. On the basis of the measurements and the calculated results of the required heat for the reheating of inlet air, we validated the prototype of the computer program, and numerically and graphically illustrated the reasons for possible deviations. We have also determined which parameters affect the necessary heat for the reheating of the air in the mechanical ventilation system, and how can we ensure thermal comfort in a room with the lowest possible use of energy.
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