Abstract：
In this study, a photovoltaic/thermal (PVT) collector and a stepped solar still system were constructed and integrated. The PVT collector was used to improve the performance of a stepped solar still device. Saltwater enters into the PV-T system and the temperature of the solar panel declines, and then ultimately the efficiency of the PV-T collector increases. After leaving the PVT collector, the temperature of the saltwater increased and was used as a pre-heater for further evaporation in the solar still, which ultimately caused an increase in its efficiency. The more tremendous temperature difference generated between the stepped surface and the glass increases efficiency and produces more freshwater. A flow rate of 7.5 L/hour of saline water was used to study the efficiency of the solar still device and the PVT collector. The value of productivity of solar still system with photovoltaic/thermal collector was 0.76 kg/m2 more than that of conventional solar still. Despite the PVT collector, the daily efficiency of the solar still system increased to 34.8%, which shows an increase of 13.9% compared to the passive solar still device. Also, by cooling the PV-T system, the average electrical efficiency has increased from 13.1 to 13.7%. Production power reached 72.46 W from 65.96 W in two consecutive days at 11:15.
摘要：
在这项研究中,构建并集成了光伏/热（PVT）收集器和阶梯式太阳能静止系统。PVT收集器用于改善阶梯式太阳能静止装置的性能。盐水进入PV-T系统，太阳能电池板的温度下降，然后最终PV-T收集器的效率增加。离开PVT收集器后，盐水的温度升高，被用作太阳能蒸馏装置中进一步蒸发的预热器，这最终导致了效率的提高。在阶梯状表面和玻璃之间产生的更巨大的温差提高效率并产生更多的淡水。使用流速为7.5L/小时的盐水来研究太阳能静止装置和PVT收集器的效率。具有光伏/集热器的太阳能静止系统的生产率值比常规太阳能静止系统高0.76kg/m2。尽管有PVT收集器,太阳能静止系统的日效率提高到34.8%，与被动式太阳能静止设备相比，增加了13.9%。此外，通过冷却PV-T系统，平均电效率从13.1%提高到13.7%。11:15连续两天生产功率从65.96W达到72.46W。
