In tropical countries, air conditioning system is commonly used to provide thermal comfort in buildings. However, operating the air-conditioning system for long hours daily will result in escalating electricity bill. Hence, an effective roof cooling system is desired to reduce the high energy cost while maintaining the thermal comfort in the buildings. In view of this, closed loop pulsating heat pipe (CLPHP) roof cooling system is introduced in this study. The thermal performances of the CLPHP roof system are investigated through a series of experiments and benchmark with the bare metal roof system design. The experiment results showed that the cool roof system with CLPHP technology can lower the attic temperature from 34 °C to 29.6 °C, with about 13% of temperature reduction as compared to the bare metal roof design. The results showed that CLPHP cool roof system is found to be a promising method for attic retrofitting interventions to improve thermal comfort in the building.

在热带国家，空调系统通常用于为建筑物提供热舒适性。然而，每天长时间使用空调系统会导致电费上涨。因此，需要一种有效的屋顶冷却系统来降低高能源成本，同时保持建筑物的热舒适性。鉴于此，本研究引入闭环脉动热管（CLPHP）屋顶冷却系统。CLPHP 屋顶系统的热性能通过一系列实验和基准与裸金属屋顶系统设计进行了研究。实验结果表明，采用 CLPHP 技术的冷屋顶系统可以将阁楼温度从 34 °C 降低到 29.6 °C，与裸金属屋顶设计相比，温度降低了约 13%。