Water-filled double-glazing is a new design in water-flow window technology. With a horizontal heat-transfer tubing dipped at the top end of the water layer in the window cavity, the absorbed solar heat is directly passed onto the domestic water heating system. The design avoids water-tube insertion at the high-pressure region, and hence minimizes the water leakage risk. Its warm climate application helps to reduce the year-round domestic water heating and air-conditioning loads. This paper reports the application of the dynamic simulation model of this new design. The validated model was used to evaluate its energy performance at different tropical and subtropical cities worldwide. The numerical results show that the 24 -h thermal efficiency is in the range of 26%–51% in the selected cities, mainly depending on the seasonal variation in ambient temperature. The degree of electricity saving in air conditioning will depend on the actual site location and the building activity. This innovative technology has wide application potential in zero-energy buildings.

充水双层玻璃是水流窗技术的一种新设计。通过将水平传热管浸入窗腔中水层的顶端，吸收的太阳热直接传递到家用热水系统中。该设计避免了在高压区域插入水管，从而最大程度地减少了漏水的风险。其温暖的气候应用有助于减少全年的生活用水和空调负荷。本文报告了这种新设计的动态仿真模型的应用。经过验证的模型用于评估其在全球不同热带和亚热带城市的能源绩效。数值结果表明，所选城市的24小时热效率在26％–51％的范围内，主要取决于环境温度的季节性变化。空调节电的程度将取决于现场的实际位置和建筑物的活动。这项创新技术在零能耗建筑中具有广泛的应用潜力。