Condensate as a water source from vapor compression systems in hot and humid regions

Al‐Farayedhi, Abdulghani A.; Ibrahim, Nasiru I.; Gandhidasan, P.

doi:10.1016/j.desal.2014.05.002

Cited by 77 publications

(31 citation statements)

References 9 publications

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“…The average turbidity of the samples was lower than 0.40 NTU for all three water types, with the lowest values being found for ultrapure water, followed by condensed water. The average turbidity observed in condensed water was lower than that presented by [15], which was 2.01 NTU for research conducted in Saudi Arabia. On the other hand, [16], observed a turbidity of 0.45 NTU for condensed water in a study carried out in the state of Paraíba, Brazil, corroborating the data observed here.…”

Section: Resultscontrasting

confidence: 59%

Use of condensed water from air conditioning systems

et al. 2018

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Facing the growing demand for water, discussions on environmental sustainability and conservation of this resource have become increasingly important. Among the possibilities for water conservation, air conditioning systems have potential applicability because, during their operation, water is generated via the condensation of air humidity, which is normally discarded. Thus, the objective of this work was to evaluate the water released by air conditioning equipment (condensed water) installed in the Laboratory of Water Analysis (LAnA) qualitatively and quantitatively, in order to verify its potential for use in the laboratory itself. For this, the quality of the water produced by three air conditioners was compared water quality parameters found in the literature, as well as with water produced by a distiller and an ultra-purifier, both used in the LAnA. Water quality was evaluated using physicochemical parameters (i.e. pH, electrical conductivity, resistivity, alkalinity, turbidity, apparent color and hardness) and microbiological parameters (i.e. total coliforms, Escherichia coli and heterotrophic bacteria). The average water flow produced by the three monitored air conditioners was 3.08 L/hour, which is higher than the daily consumption by the LAnA, indicating that its use would be quantitatively propitious. The physicochemical and microbiological analyses found that, condensed water can be used in the routine activities of LAnA. However, for its use as reagent-grade water, a prior treatment would be necessary, mainly due to the presence of heterotrophic bacteria.

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Section: Resultscontrasting

confidence: 59%

Use of condensed water from air conditioning systems

et al. 2018

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“…Compression cooling is the most widely used refrigeration technology for water harvesting. [ 47,48 ] As shown in Figure a, with the help of the compressor, the liquid refrigerant is transported to the evaporating part, and the adsorbed humid air is quickly cooled to below the dew point, thereby condensing into liquid water. The low‐temperature cooled air is then used to remove excess heat from the condenser, and the obtained water is subsequently processed and stored.…”

Section: Atmospheric Water Harvestingmentioning

confidence: 99%

Advances in Solar‐Driven Hygroscopic Water Harvesting

Zhuang

Wang

et al. 2020

Global Challenges

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Water scarcity is one of the greatest global challenges at this time. Significant efforts have been made to harvest water from the air, due to widely available water sources present in the atmosphere. Particularly, solar‐driven hygroscopic water harvesting based on the adsorption–desorption process has gained tremendous attention because of the abundance of solar energy in combination with substantial improvements in conversion efficiency enabled by advanced sorbents, improved photothermal materials, interfacial heating system designs, and thermal management in recent years. Here, recent developments in atmospheric water harvesting are discussed, with a focus on solar‐driven hygroscopic water harvesting. The diverse structural designs and engineering strategies that are being used to improve the rate of the water production, including the design principles for sorbents with high adsorption capacity, high‐efficiency light‐to‐heat conversion, optimization of thermal management, vapor condensation, and water collection, are also explored. The current challenges and future research opportunities are also discussed, providing a roadmap for the future development of solar‐driven hygroscopic water harvesting technology.

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“…Some innovations have been made to provide energy for heating and cooling using the potential of the earth such as geothermal heat pumps, electricity generation in geothermal power plants, water heating of pools, aquaculture, melting of snow and ice in passages [37,38]. But the use of land potential as a source for cooling and condensation of humidity in the air has been less widely considered [39,40].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation On Water Extraction From The Atmosphere By Underground Condensation Water Production System

Mafi

Zarabadi

Soltani

et al. 2021

Preprint

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Underground condensation water production system is a low capacity water harvesting method that is suitable for hot and humid climate regions. In this method, the hot and humid airflow is directed to the buried pipes in the ground and, the air is gradually cooled down and the vapor contained therein appears as droplets of water on the pipe surface. The assessment of the amount of water extraction in the condensation system of hot and humid air is the main objective of this investigation. A computational code using MATLAB software is developed to evaluate the amount of water production from humid air in the buried pipes into the ground at a depth of 0.5 m with various lengths and obtain the optimal length of the pipe. Numerical results indicate that water production by considering the initial conditions in this study is about 1 kg per day. The influence of important and effective parameters in underground condensation water production system such as pipes material, air temperature, air humidity, soil temperature, input speed have been investigated. Also, the influence of effective parameters on the performance of the condensation system, including temperature and humidity of inlet air, soil temperature and inlet air velocity, have been evaluated.

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Condensate as a water source from vapor compression systems in hot and humid regions

Cited by 77 publications

References 9 publications

Use of condensed water from air conditioning systems

Use of condensed water from air conditioning systems

Advances in Solar‐Driven Hygroscopic Water Harvesting

Numerical Investigation On Water Extraction From The Atmosphere By Underground Condensation Water Production System

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