An Experimental Study on Water Harvesting from a Modified Window Air-Conditioner

Dalai, Purnendu; Nanda, Pradipta Kumar; Mund, Chinmaya; Mishra, Debasmita; Gupta, Abhijeet

doi:10.1016/j.egypro.2017.03.058

Cited by 17 publications

(6 citation statements)

References 10 publications

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“…Apart from the relevant characteristics of water extraction from the air, it should be noted that this method of water extraction is decentralized in nature, making it practically indispensable in the provision of potable water in poor and underdeveloped countries (Bui et al, 2017). More than 2 million deaths are caused each year by poor hygiene and a lack of sanitation due to a lack of clean water (Magrini et al, 2015a;Dalai et al, 2017). The availability of clean water is a factor in the economic development of areas far from conventional water sources, such as rivers, lakes, and springs.…”

Section: Introductionmentioning

confidence: 99%

Use of condensed water from air conditioning equipment as a strategy to face the global scarcity of freshwater: a review

Dalmora¹,

Civeira

Campos

et al. 2023

LADEE

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The increase in the world's demand for water has become one of the most relevant topics on environmental sustainability and the conservation of water resources. As a result of the scarcity of potable water, processes such as the use of water through practices, techniques, and technologies for its efficient use have become essential for future generations. Among the possibilities for using water, air conditioning systems stand out, due to the formation of condensed water during operation. The world's population is increasingly concerned about environmental issues, showing that it is necessary to seek alternatives to recycle water, whether for use in gardening, sewage systems, washing sidewalks, and cars, among others. The present study carried out a literature review to reflect on the theme of the reuse of condensation water from air conditioners as a strategy for the sustainable use of water resources and enhancing the future of planet Earth.

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Section: Introductionmentioning

confidence: 99%

Use of condensed water from air conditioning equipment as a strategy to face the global scarcity of freshwater: a review

Dalmora¹,

Civeira

Campos

et al. 2023

LADEE

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“…10 In this regard, researchers introduced the atmospheric water harvesting techniques. Some of those techniques include fog harvesting, [11][12][13] dew water harvesting, 10,14 bioinspired water harvesting, [15][16][17][18] vapor compression cycle, 19,20 heating, ventilation, and air-conditioning, [21][22][23] evaporator coils, 24 hybrid air-conditioning/humidificationdehumidification system, [25][26][27] thermoelectric cooling, [28][29][30][31][32] radiative cooling condenser, 33,34 selective membrane, 35,36 and adsorption based water harvesting. [37][38][39][40][41][42] Among all these technologies, adsorption-based atmospheric water harvesting (AWH) technology has gained attention in recent years because of its ability to extract the enough amount of freshwater using minimum amount of energy.…”

Section: Introductionmentioning

confidence: 99%

An overview of solid and liquid materials for adsorption-based atmospheric water harvesting

Wasti

Sultan

Aleem

et al. 2022

Advances in Mechanical Engineering

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Thermally driven adsorption-based atmospheric water harvesting (AWH) is becoming an emerging technology to provide potable water. In this regard, various adsorbent materials including solid (MOFs, silica-gels, and zeolites), liquid (CaCl2 and LiCl), and composite adsorbents are explored in the literature. This study reviews recent advancements in adsorbent materials based on their water production capacity at different conditions that is air temperature and relative humidity (RH). The MOF of type MIL-101(Cr) shows water production capacity of 3.10 L/m2/day at RH ranging from 10% to 40%. Similarly, Zr-MOF-808 possesses water production capacity of 8.60 L/m2/day at RH more than 50%. Among the studied silica-gels, mesoporous silica-gel shows highest water production capacity that is 1.30 L/m2/day at RH ranging from 10% to 40%. The zeolite yielded water production capacity of 0.94 L/m2/day at RH ranging from 10% to 40%. On the other hand, liquid adsorbents like CaCl2 + cloth, K-LiCl showed water production capacity of 3.02 L/m2/day, and 2.9 g/g/day, respectively at RH of about 70%. Composite adsorbent modified with binary salts and functionalized carbon nanotubes resulted water production capacity of 5.60 g/g at RH of about 35%. The study will be useful to identify the energy-efficient adsorbent for the development of sustainable AWH device.

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“…Cooling surfaces can be achieved, among other means, using refrigeration cycle systems. For example, modified air conditioners were used to harvest water from the air 4,5 . An analytical and experimental study was done on a 1.5‐ton split unit during humid and hot summer months 6 .…”

Section: Introductionmentioning

confidence: 99%

A new solar atmospheric water harvesting integrated system using CPV/T – Stirling engine – Absorption cooling cycle and vapor compression refrigeration cycle

et al. 2021

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Summary This research theoretically investigates the performance of a new integrated solar atmospheric water harvesting system. The system consists of a concentrated photovoltaic thermal unit (CPV/T) to capture solar radiation and produce electricity. The rejected heat is utilized to drive an alpha‐type Stirling engine and a single effect LiBr/H2O absorption cooling cycle (ACC). The power output of the Stirling engine and the CPV/T is used to drive a vapor compression refrigeration cycle (VCRC), whereas the cooling capacity of the cooling cycles is used to cool and dehumidify ambient air and generate potable water. Moreover, a heat recovery heat exchanger is employed to pre‐cool the supply air before entering the evaporator, thus increasing the water production rate. The model is validated and solved numerically. A parametric study is conducted to show the effect of a variety of ambient and operating conditions on the system's performance. The highest water production rate is found, as expected, to be in hot and humid climates where the solar radiation, the ambient temperature, and the relative humidity are high. The freshwater production exhibits a non‐monotonic behavior with increasing the air mass flow rate, and the maximum potable water production was identified. At solar radiation values of 0.6, 0.8, and 1 (kW/m2), the maximum water production was generated at air mass flow rate values of 1.6, 2.8, and 3.8 (kg/s), and the corresponding maximum water production were 13.37, 20.12, and 26.28 (L/h), respectively. It is found that this integrated system can produce up to 30 L/h under hot and humid ambient conditions, and pre‐cooling of the supplied air yields better performance under drier conditions. The proposed system is suitable for small‐scale applications where water demand is less than 180 L/day. It is found that the amount of electrical energy consumed per liter of produced water by this system is between 225 and 315 Wh/L approximately.

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An Experimental Study on Water Harvesting from a Modified Window Air-Conditioner

Cited by 17 publications

References 10 publications

Use of condensed water from air conditioning equipment as a strategy to face the global scarcity of freshwater: a review

Use of condensed water from air conditioning equipment as a strategy to face the global scarcity of freshwater: a review

An overview of solid and liquid materials for adsorption-based atmospheric water harvesting

A new solar atmospheric water harvesting integrated system using CPV/T – Stirling engine – Absorption cooling cycle and vapor compression refrigeration cycle

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