Among multiple desalination techniques, humidification-dehumidification is one of the most efficient methods to be considered for remote regions with moderate fresh water
The main parts of the process consist of an air collector field, spray humidifiers and a dehumidifier and heat recovery system. The process flow sheet has undergone several changes: the...
The most promising recent development in solar desalination is the use of the humidification- dehumidification (HD) process. The HD process is based on the fact that air can be mixed with
There are three main components in the solar HDH system: humidifier, dehumidifier and solar thermal heater (for air, water or for both). A. Humidifiers It is where air comes in contact with
The main parts of the process consist of an air collector field, spray humidifiers and a dehumidifier and heat recovery system. The process flow sheet has undergone several changes: the...
The most promising recent development in solar desalination is the use of the humidification- dehumidification (HD) process. The HD process is based on the fact that air can be mixed with large quantities of water vapour. The vapour carrying capability of air increases with temperature: 1 kg of dry air can carry 0.5 kg of vapour and
This paper presents a theoretical study of a solar desalination system with humidification-dehumidification which is a promising technique of production of fresh water at small scale (few m 3 /d). A general model based on heat and mass transfer balances in each component of the system was developed and used to optimize the system''s
Humidification–dehumidification (HD) cycle solar desalination using a subsurface condenser can be used as an effective technology for producing desalinated
COMPONENTS OF HDH PROCESS There are three main components in the solar HDH system: humidifier, dehumidifier and solar thermal heater (for air, water or for both). A. Humidifiers It is where air comes in contact with water and
Numerical investigation for different hybrid solar desalination system configurations have been conducted. The most important effective arrangement variables and operating parameters are depicted to conduct system and economic analyses, thereby achieving the lowest water production costs and the highest performance. The main comparative
There are three main components in the solar HDH system: humidifier, dehumidifier and solar thermal heater (for air, water or for both). A. Humidifiers It is where air comes in contact with water and humidified. The aim of the humidifier is to increase the area and time of contact between water and air. There are several types of
COMPONENTS OF HDH PROCESS There are three main components in the solar HDH system: humidifier, dehumidifier and solar thermal heater (for air, water or for both). A. Humidifiers It is where air comes in contact with water and humidified. The aim of the humidifier is to increase the area and time of contact between water and air. There are
On the other hand, the lowest freshwater production was 2.34 kg (equal to 0.56 kg/h/m 2 solar humidifier) at the seawater flow rate of 0.05 kg/s and the condensation temperature of 30 °C. The study on the HDH desalination system equipped with PVT modules showed that the highest amount of produced water was 0.82 L/h observed at the seawater flow rate of 30 kg/h
solar panel manufacturing process George-Felix Leu, Chris Egli & Edgar Hepp, Oerlikon Solar, Trübbach, Switzerland, & Bertrand Le Faou, Jean-Charles Cigal & Greg Shuttleworth, The Linde Group
The three basic parts of H–DH desalination system are heat source (air and water heater), humidifier, and dehumidifier. Various researches were conducted to improve the H–DH desalination system performance. The thermal performance of desalination system using humidification–dehumidification (H–DH) approach was experimentally investigated by Yuan et
W.F. He et al. / Desalination and Water Treatment 293 (2023) 1–13 3 2. Modeling 2.1. Definition of a dual-heated WPCS Configuration details of the dual-heated WPCS are shown
To provide both thermal and electrical energies needed for the humidification-dehumidification (HDH) desalination systems independent of fossil fuels, the present study
They aimed at different system parts; for instance, the organic Rankine cycle working fluid and heat transfer fluid, as the system characteristics to be optimized. Ayoub and Malaeb [13] have reviewed the reported developments in solar still desalination devices and addressed the conducted research on the methods of increasing water production and
The solar cell production industry is a complex web of different players, each with their unique roles. Solar PV module production lies at the heart of this intricate market. It begins with suppliers of silicon wafers, the first step in the photovoltaic supply chain. These wafers go through advanced processes to become clean energy solutions. Many parts of the industry
Finally, Abdel Dayem et al. (Citation 2022) carried out a psychrometric analysis on the performance of a new packing material in an attempt to enhance the evaporation process in the humidifier. They reported that during a hot summer day (60°C) a production of 28 L/day/m 2 from a solar collector (parabolic dish) could be achieved.
The abrupt rise in the human population and the simultaneous shortage of the available resources of natural water have created the dearth of fresh drinkable water. This has turned out to be a critical issue of fresh water availability, which needs to be resolved at the earliest. The best solution to this problem can be saline water desalination, but that is purely
This study investigates a desalination system based on a humidification–dehumidification (HDH) process driven by solar modules. The system is described within the framework of equilibrium theory by proposing a solution that is valid when assuming a constant saline water flow rate across the humidifier. This provides accurate predictions and
To provide both thermal and electrical energies needed for the humidification-dehumidification (HDH) desalination systems independent of fossil fuels, the present study proposed a photovoltaic-thermal (PVT) solar humidifier. The designed humidifier is a double-pass dual-fluid solar collector, which was mounted on a humidification
This study investigates a desalination system based on a humidification–dehumidification (HDH) process driven by solar modules. The system is described within the framework of equilibrium theory by proposing a
Humidification–dehumidification (HD) cycle solar desalination using a subsurface condenser can be used as an effective technology for producing desalinated drinking or agricultural water in remote desert areas. These types of processes are based on the capability of combining air and vapor.
Among multiple desalination techniques, humidification-dehumidification is one of the most efficient methods to be considered for remote regions with moderate fresh water demand. This is majorly because it requires minimal operational and maintenance considerations.
The humidification dehumidification desalination process is viewed as a promising technique for small capacity production plants. The process has several attractive features, which include...
The humidification dehumidification desalination process is viewed as a promising technique for small capacity production plants. The process has several attractive features, which include...
The improvement of the evaporation process can significantly improve water production and the overall efficiency of a solar humidification-dehumidification (HDH) system.
The solar humidification–dehumidification method (HDH) is a thermal water desalination method. It is based on evaporation of sea water or brackish water and consecutive condensation of the generated humid air, mostly at ambient pressure. This process mimics the natural water cycle, but over a much shorter time frame.
A solar desalination unit with humidification and dehumidification is presented. Experiments on the unit were conducted. It was found that the performance of the system was strongly dependent on the temperature of inlet salt water to the humidifier, the mass flow rate of salt water, and the mass flow rate of the process air.
Experimental investigation of a multi-stage humidification-dehumidification desalination system heated directly by a cylindrical Fresnel lens solar concentrator Integration of process modeling, design, and optimization with an experimental study of a solar-driven humidification and dehumidification desalination system
Sharshir et al. offered a solar HDD unit integrated with four solar stills that reused the drain warm water from humidifier for feeding the solar stills. The productivity of the conventional one, single solar still, four solar stills, HDD, and the proposed hybrid configuration were obtained to be 3.2, 10.5, 42, 24.3 and 66.3 l/day.
During a numerical and experimental analysis in Cairo in 2009 , air humidification technique is employed as a developed effective method for design and manufacture of a solar desalination plant. For investigation purposes, three configurations were analyzed.
The outlet conditions of air from the humidifier are theoretically predicted by FDM with the given inlet conditions, which will be further used in the design calculation of the humidifier. Hot water to air flow rate ratio and inlet hot water temperature are identified as key operating parameters to evaluate the humidifier performance.
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