Clean heating is essential for achieving carbon neutrality and accelerating the low-carbon transition of buildings. Electric radiant heating panels offer advantages such as flexible control, rapid thermal response, and simple installation. This study investigates the feasibility and performance of a Carbon Crystal Panel (CCP) floor heating system for buildings in China's hot summer and cold winter (HSCW) climate region. A numerical model of a CCP-heated room was developed, validated through experimental testing, and used to evaluate heating performance, temperature regulation behavior, thermostat placement, and the influence of wall thermal storage. The results demonstrate that while a higher heating intensity substantially speeds up the indoor temperature rise, it also triggers earlier and more frequent cycling due to faster attainment of the set point temperature. The optimal thermostat location is identified as approximately seven-eighths of the room width from the exterior wall. Lightweight walls lead to larger temperature fluctuations, whereas higher thermal storage reduces cycling frequency. Compared with continuous operation, a time-of-use intermittent strategy reduces daily heating cost by 23.44 %. This study provides a scientific basis for the design and practical application of CCP floor heating systems in HSCW regions.
Li et al. (Wed,) studied this question.