Integrated Systems for Air Conditioning and Production of Drinking Water – Preliminary Considerations

Magrini, Anna; Cattani, Lucia; Cartesegna, Marco; Magnani, Lorenzo

doi:10.1016/j.egypro.2015.07.406

Cited by 41 publications

(15 citation statements)

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“…Researchers have developed various designs for water and energy recovery from HVAC systems [ 35 , 98 , 99 , 100 , 101 , 102 ]. Cattani et al [ 103 ] developed an integrated system of HVAC for water production.…”

Section: Water Recoverymentioning

confidence: 99%

Sustainability of Heating, Ventilation and Air-Conditioning (HVAC) Systems in Buildings—An Overview

Asim

Badiei

Mohammad

et al. 2022

IJERPH

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Increasing demand on heating, ventilation, and air-conditioning (HVAC) systems and their importance, as the respiratory system of buildings, in developing and spreading various microbial contaminations and diseases with their huge global energy consumption share have forced researchers, industries, and policymakers to focus on improving the sustainability of HVAC systems. Understanding and considering various parameters related to the sustainability of new and existing HVAC systems as the respiratory system of buildings are vital to providing healthy, energy-efficient, and economical options for various building types. However, the greatest opportunities for improving the sustainability of HVAC systems exist at the design stage of new facilities and the retrofitting of existing equipment. Considering the high available percentage of existing HVAC systems globally reveals the importance of their retrofitting. The attempt has been made to gather all important parameters that affect decision-making to select the optimum HVAC system development considerations among the various opportunities that are available for sustainability improvement.

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Section: Water Recoverymentioning

confidence: 99%

Sustainability of Heating, Ventilation and Air-Conditioning (HVAC) Systems in Buildings—An Overview

Asim

Badiei

Mohammad

et al. 2022

IJERPH

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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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“…They reported an improvement of 165% in comparison with the common atmospheric water generator. Magrini et al 9 studied the feasibility of water production using the condensation by chillers used for cooling a hotel with a cooling capacity of 3600 kW. The study estimated a water production of up to 10 (m 3 /day) during July through September.…”

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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Integrated Systems for Air Conditioning and Production of Drinking Water – Preliminary Considerations

Cited by 41 publications

References 0 publications

Sustainability of Heating, Ventilation and Air-Conditioning (HVAC) Systems in Buildings—An Overview

Sustainability of Heating, Ventilation and Air-Conditioning (HVAC) Systems in Buildings—An Overview

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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