A Comparative Analysis of Simplified Calculation Procedures for Assessing the Energy Losses of Heating Emission Systems

In the assessment of energy performance of buildings, the efficiency of technical building systems, especially those related to heating and cooling services, has a significant impact on the overall energy consumption. For this reason, accurately determining the performance of these systems is of utmost relevance. Current simplified procedures for evaluating technical building systems lack complete validation, potentially leading to undesired inaccuracies in the results. This paper analyses the existing simplified procedures provided by standards for assessing heat emission and control subsystems. It examines the procedure currently in use in Europe and presents a comparative analysis with more detailed procedures. Through a case study approach, the research explores several configurations of a representative residential space, considering factors such as climatic data, envelope properties, emission terminals, and control strategies. By addressing these aspects, this research contributes to enhancing the understanding of the effectiveness and reliability of simplified procedures for assessing the performance of technical building systems.