Experimental Study of a Humidification-Dehumidification Seawater Desalination System Combined with the Chimney

Abstract

The solar humidification-dehumidification system is of high significance to the freshwater supply in remote areas. In the present study, a humidification-dehumidification seawater desalination system combined with the chimney is designed and experimentally evaluated. Main parameters influencing its freshwater productivity are analyzed. It is found from this study that the cooling tower is required to obtain long-term steady freshwater generation. Raising the temperature difference between the evaporation and condensation chambers would lead to the rise of the freshwater productivity. There is a turning wind speed, beyond which increasing the wind speed would lead to the decline of both the freshwater productivity and the thermal efficiency. The turning wind speed is relevant to the ambient humanity and the heating power. Decreasing the heat power would increase the turning wind speed. When the heating power is 4.9 kW, the highest freshwater productivity and the highest efficiency are 48 g/min and 32.14%, respectively.

Steam condensation heat transfer on lubricant-infused surfaces

“…Condensation of steam plays a significant role in various industrial processes ( Liu and Preston, 2019 ), including desalination ( Bilgil and Hırlakoğlu, 2017 ; Cao et al., 2020 ; Huang et al., 2020 ); power generation ( Bao et al., 2017 ; Chuang and Sue, 2005 ; Yang et al., 2019 ); water harvesting ( Jarimi et al., 2020 ); and heating, ventilation, and air conditioning systems ( Brenner et al., 2020 ; Wang et al., 2020 ). Of significance for this study, steam cycle efficiency is directly tied to condensation heat transfer effectiveness in a power plant condenser.…”

Effect of Reflecting Material on CPC to Improve the Performance of Hybrid Groundwater Solar Desalination System

“…Li et al [38] conducted an experimental study of desalination systems at both the humidification and dehumidification stages of the solar air heater. Cao et al [39] had conducted an experimental study of the desalination system at both the humidification and dehumidification phases which are combined with chimneys whereas Murali et al [40][41][42] had worked on solar still productivity enhancement by PCM and made a serious investigation on the performance of a solar aluminum can air heater in the case of latent heat storage and also in the absence of latent heat storage. They argued that a phase change material (PCM) is required for solar still productivity improvement.…”