Energy management in a building is to control and lessen the energy consumption, to decrease both costs and carbon emissions. Building-integrated thermal systems are adept to produce heat. Various scenarios have been planned to integrate heat into a building formation to enhance performance of entity system, supply indoor heating, and provide hot water. Concept backside Flat-plate Solar collector is that Sun warmth the set of tubes. This surface collects as much energy as preferable, and then water heats by this energy. This study aims to compare the Energy efficiency between phase change materials (PCMs) containing Paraffin-wax/Graphene and Paraffin-wax/Graphene Oxide carbon-based nanofluids for renewable, clean, green and sustainable energy systems such as Flat Plate Solar Collectors by applying these PCMs in Buildings heating systems. Results showed that, Thermal conductivity of both Graphene/P-wax and Graphene Oxide/P-wax was enhanced in comparison with Paraffin. Also, trend of Graphene showed better thermal performance.

建筑物的能源管理是控制和减少能源消耗，以减少成本和碳排放。建筑物集成的热力系统擅长产生热量。已经计划了各种场景，将热量整合到建筑结构中，以提高实体系统的性能、提供室内供暖和提供热水。概念背面平板太阳能集热器是太阳加热管组。这个表面收集尽可能多的能量，然后水被这种能量加热。本研究旨在比较含有石蜡/石墨烯和石蜡/氧化石墨烯碳基纳米流体的相变材料 (PCM) 之间的能源效率，用于可再生、清洁、绿色和可持续能源系统，例如平板太阳能集热器。这些 PCM 在建筑物供暖系统。结果表明，与石蜡相比，石墨烯/P-蜡和氧化石墨烯/P-蜡的热导率都有所提高。此外，石墨烯的趋势表现出更好的热性能。