Study of the salinity effects on the cooling and desalination performance of an adsorption cooling cum desalination system with a novel composite adsorbent

Bai, Shengxi; Ho, Tsz Chung; Ha, Jimyeong; An, Alicia Kyoungjin; Tso, Chi Yan

doi:10.1016/j.applthermaleng.2020.115879

Cited by 34 publications

(3 citation statements)

References 43 publications

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“…The composites exhibited a high water adsorption ability exceeding 0.6 kg/kg of LiCl/MWCNT/PVA at 35°C. Bai et al 70 studied the performance of an adsorption system based on a novel composite (MWCNT‐embedded zeolite 13X/CaCl 2 ) with mass recovery. The study showed that the SDWP and SCP at 85°C regeneration temperature achieved 18 m 3 /ton/day and 490 W/kg.…”

Section: Compositementioning

confidence: 99%

Composite adsorbent materials for desalination and cooling applications: A state of the art

Alsaman

Ibrahim

Ahmed

et al. 2022

Intl J of Energy Research

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Summary Adsorption technology is very attractive for producing desalinated water and cooling with no harmful impact on the environment. The performance of adsorption water applications (desalination and cooling) depends on the adsorption characteristics. Many adsorption systems designs were investigated worldwide, employing different adsorbent materials to develop a cost‐effective and high‐performance system. This review presents and summarizes the studies in adsorption and the corresponding applications in desalination and cooling and compares the adsorption properties of composite adsorbents. The review focuses on the composite materials and how they were synthesized while comparing them in terms of the amount of adsorption. The reviewed materials have been classified according to the basic host, such as silica gel, zeolite, carbon, metal‐organic frameworks (MOF), and vermiculite. The review contains more than 70 composites. The maximum reached water vapor uptake is 1.92 kg/kg of PHTS/CaCl2‐20 wt% composite at 0.9 P/Ps. The highest available desorption amount is 1.48 kg/kg of MOF composite for desalination applications and 0.87 kg/kg of vermiculite composite for cooling applications.

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Section: Compositementioning

confidence: 99%

Composite adsorbent materials for desalination and cooling applications: A state of the art

Alsaman

Ibrahim

Ahmed

et al. 2022

Intl J of Energy Research

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“…The system achieved an SDWP of 40 m 3 /ton of silica gel per day at 95 • C driving temperature. An ADS was modeled and experimentally verified by Bai et al [16] that considered a mass recovery process and salinity effect. At a desorption temperature of 85 • C and evaporation temperature of 14 • C, the SCP and SDWP were 490 W/kg and 18 m 3 /ton/day.…”

Section: Introductionmentioning

confidence: 99%

Duplicating Freshwater Productivity of Adsorption Desalination System Using Aluminum Metal Filings

Alhumade

Askalany

Rezk

et al. 2021

Water

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In this paper, improving the overall heat transfer coefficient by adding aluminum species to silica gel has been studied theoretically. An adsorption desalination system is proposed, and a lumped theoretical model conducted to investigate employing the metal additives within the adsorbent bed with and without a heat recovery between condenser and evaporator. A 30% of the total mass of the adsorbent bed contents was considered to be replaced by aluminum species. According to this, the overall heat transfer coefficient has been increased by 260%, which shows a good impact on the performance of the adsorption system. Daily water productivity was increased by 70% at the worst-case, reaching up to 17 m3/day/ton of silica gel without heat recovery. By employing heat recovery with the metal filing, the daily water productivity reached 42 m3/day/ton of silica gel which is four times the productivity of the classic silica gel-based adsorption desalination system.

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“…The results showed that when the temperature of the hot water entering the desorper is 55°C and the flow rate is 28 m 3 /h, the rate of water production exceeds 100 kg/h. Bai et al, (2020) developed a mathematical model taking into account the influence of salinity on the physical properties of saltwater. They found that the specific cooling power and specific daily water production are 490 W/kg and 18 m 3 /tone adsorbent/day for seawater under the operating conditions of desorption temperature at 85 °C and evaporation temperature at 14°C.…”

Section: Introductionmentioning

confidence: 99%

Desalination of Agricultural Wastewater by Solar Adsorption System: A Numerical Study

AlRubaiea

Latteiff

Mahdi

et al. 2021

Int. J. Renew. Energy Dev.

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There are still areas around the world suffer from severe shortage of freshwater supplies. Desalination technologies are not widely used due to their high energy usage, cost, and environmental damaging effects. In this study, a mathematical model of single-bed adsorption desalination system using silica gel-water as working pair is developed and validated via earlier experiments. A very good match between the model predictions and the experimental results is recorded. The objective is to reveal the factors affecting the productivity of fresh water and cooling effect in the solar adsorption system. The proposed model is setup for solving within the commercially-available software (Engineering Equation Solver). It is implemented to solve the mass and heat balance equations for the adsorbent bed, condenser, and evaporator components. At a typical temperature of 89 °C and flow rate of 30 m3/sec for the hot water entering the bed, the following results are reported: (a) the specific daily water production of 1.89 m3 /ton of silica gel/ day, (b) coefficient of performance of 0.32, and (c) specific cooling power of 40.82 W/kg of silica gel. The concentration of salt (X) in the product (desalinated water) has been set with value of 0.5 gm/kg to be suitable for drinking and irrigation. The salt concentration in the evaporator is estimated to be 4.611 gm/kg during the overall adsorption process. The results from this study should be of wide interest for the field of solar water desalination and air-conditioning.

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Study of the salinity effects on the cooling and desalination performance of an adsorption cooling cum desalination system with a novel composite adsorbent

Cited by 34 publications

References 43 publications

Composite adsorbent materials for desalination and cooling applications: A state of the art

Composite adsorbent materials for desalination and cooling applications: A state of the art

Duplicating Freshwater Productivity of Adsorption Desalination System Using Aluminum Metal Filings

Desalination of Agricultural Wastewater by Solar Adsorption System: A Numerical Study

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