With increasing demand for building energy savings and comfort, radiant cooling systems have received increasing research attention, and novel radiant cooling terminals have been developed in recent years. However, poor surface temperature uniformity and the issue of coupled condensation prevention and cooling capacity remain the two major limitations of radiant cooling terminals. In this study, a novel radiant cooling terminal integrated with a heat exchanger and a flat heat pipe was developed. A novel cooling mode was proposed by using the flat heat pipe for sensible heat transfer only and the heat exchanger for both cooling and dehumidification. Furthermore, forced convection was added to the terminal to further optimize the cooling performance. Heat transfer analysis and thermal performance of the terminal were conducted. The novel terminal has advantages in thermal response speed (360–535 s) and surface temperature uniformity (±2 °C) due to phase change. The sensible and latent heat transfers were separated. The dehumidification-adjustable cooling method changed the cooling capacity of the terminal from 104.4 to 357.4 W, and the proportion of latent heat transfer varied between 12.1% and 26.4%, with preliminary results showing decoupled condensation prevention and cooling capacity improvement. Furthermore, adding forced convection increased this decoupling, and the surface temperature and cooling capacity simultaneously increased by 4°C-6°C and 75.7%, respectively. Cooling terminal performance improved owing to the dehumidification-adjustable cooling method, which had a referable application value.

随着对建筑物节能和舒适性的需求增加，辐射冷却系统已受到越来越多的研究关注，并且近年来已经开发了新颖的辐射冷却终端。然而，差的表面温度均匀性以及防止冷凝和冷却能力的问题仍然是辐射冷却端子的两个主要限制。在这项研究中，开发了一种将热交换器和扁平热管集成在一起的新型辐射冷却终端。通过使用扁平热管仅用于显热传递，而热交换器用于冷却和除湿，提出了一种新颖的冷却模式。此外，强制对流已添加到终端以进一步优化冷却性能。进行了热传递分析和端子的热性能。由于相变，这种新型端子在热响应速度（360–535 s）和表面温度均匀性（±2°C）方面具有优势。显热传递和潜热传递是分开的。可调节除湿量的冷却方法将终端的冷却能力从104.4 W更改为357.4 W，潜热传递的比例在12.1％和26.4％之间变化，初步结果表明，防止结露和冷却能力的提高相互耦合。此外，增加强制对流会增加这种解耦，表面温度和冷却能力同时分别增加4°C-6°C和75.7％。由于采用了除湿量可调的冷却方法，冷却终端性能得到了提高，具有一定的应用价值。