Abstract

This study evaluate how adding noise-reducing floor layers, increase slab thickness, affects the thermal performance of radiant floor heating in residential buildings. Energyplus simulations were performed and experimentally validated to ensure that the model accurately reproduced the thermal behaviour of the new thicker floor structure. Model validation involved comparing measured and simulated indoor temperatures under non-heating conditions and pulse heating operations, achieving CVRMSE values of 0.45% and 1.08%, respectively. Using the validated model, simulations were performed for a representative apartment building in Seoul, focusing on conditions during the coldest period of the year. The results showed that the increased floor thickness reduced heating operation duration and total energy consumption by approximately 2.6%, enhancing energy efficiency. However, the thicker structure also increased overheating time, indicating the need for optimized temperature control strategies.