Fundamental and application aspects of adsorption cooling and desalination

Saha, Bidyut Baran; El-Sharkawy, Ibrahim I.; Shahzad, Muhammad Wakil; Thu, Kyaw; Li, Ang; Ng, Kim Choon

doi:10.1016/j.applthermaleng.2015.09.113

Cited by 68 publications

(26 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After H sh is calculated for an effect, the height of the evaporating liquid film is determined as y = H -H sh , and is used in Eqs. (12), (14) and (16). It is noted that for all the cases studied in this work, the modeling results showed that the sensible heating height varied from 30 to 50 mm in the first effect to 10 to 20 mm in the last effect with an average height of about 20 mm.…”

Section: Sensible Heat Transfer To the Feed Watermentioning

confidence: 58%

“…They found that water production increase of 60%-78% could be achieved at the same heat source conditions due to the coupling. Saha et al [14] conducted experiments on a hybridized adsorption cycle with MED. Results demonstrated that the water production improved by 2-3-folds in a system consisting of a three-effect MED and adsorption plant with the top brine temperature at 50°C.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy and exergy analysis of a novel multiple-effect vapor chamber distillation system for high-salinity wastewater treatment

Shabgard¹,

Parthasarathy²,

Xu³

2019

Desalination and Water Treatment

View full text Add to dashboard Cite

Follow this and additional works at: https://scholarworks.utrgv.edu/me_fac Part of the Mechanical Engineering Commons, and the Water Resource Management Commons Recommended Citation Recommended Citation Shabgard, Hamidreza; Parthasarathy, Ramkumar; and Xu, Ben, "Energy and exergy analysis of a novel multiple-effect vapor chamber distillation system for high-salinity wastewater treatment" (2019). Mechanical Engineering Faculty Publications and Presentations. 6. a b s t r a c tA novel modular thermally-driven multiple-effect vapor chamber distillation (MVCD) system is presented for compact and portable desalination applications. The MVCD system consists of several vapor chambers connected in series with the condenser section of the upstream vapor chambers serving as the evaporator section of the following effect. A heat transfer model accounting for the major thermal resistances was developed to predict the heat transfer and distilled water production rates. A mass transfer analysis was performed to evaluate the effect of the accumulation of the non-condensable gasses within the chambers. An exergy analysis was also conducted to quantify the efficiency of the system from the viewpoint of the second law of thermodynamics. It was found that for a fixed number of effects, increasing the hot-end temperature increased the distillation rate and decreased the second law efficiency. On the other hand, increasing the number of effects at a fixed hot-end temperature resulted in increased distillation rate and second law efficiency. The increased salinity of the feed water resulted in smaller distillation rates and greater second law efficiency. For all the cases, it was found that sensible heat recovery from the discharging fluids could improve the gained output ratio (GOR) and the second law efficiency by about 10%. Quantitatively, at a hot-end temperature of 70°C, feed water salinity of 35 ppt and recovery ratio of 36%, the MVCD system with six effects and energy recovery from the discharging fluids yielded a GOR of 5.0 and a second law efficiency of 3.8%.

show abstract

Section: Sensible Heat Transfer To the Feed Watermentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Energy and exergy analysis of a novel multiple-effect vapor chamber distillation system for high-salinity wastewater treatment

Shabgard¹,

Parthasarathy²,

Xu³

2019

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…A schematic of the process is shown in Figure . Details of the AD cycle can also be found in the published literature . The AD cycle can be integrated with another thermally driven desalination system such as MED to improve the overall performance.…”

Section: Resultsmentioning

confidence: 99%

“…Details of the AD cycle can also be found in the published literature. [24][25][26][27][28] TheA Dc ycle can be integrated with another thermally driven desalination system such as MED to improve the overall performance. Shahzad et al [29] conducted at heoretical study and simulated integration of an AD cycle with MED to extend the bottom brine temperature to as low as 10 8Cc ompared to ac onventional MED condenser, which has ab ottom brine temperature of 40 8C.…”

Section: Ad Cycle Operational Strategymentioning

confidence: 99%

An Improved Multievaporator Adsorption Desalination Cycle for Gulf Cooperation Council Countries

Shahzad

2017

Energy Tech

View full text Add to dashboard Cite

In Gulf Cooperation Council (GCC) countries, cogeneration‐based desalination processes consume almost 25 % of the total annual energy, and this number increases annually by 2.2 %. The high demand for fresh water can be attributed to the high gross domestic product growth rate, 24 %, and high water languishes, which are more than 10 %. Over the past two decades, GCC countries have spent tens of billions of dollars to expand their present and planned desalination capacities. It is foreseeable that with a business‐as‐usual scenario, the domestic oil consumption of Saudi Arabia may exceed its production capacity by 2040. Innovative and sustainable water production solutions are urgently needed for future water supplies without an environment impact. In this paper, a hybrid desalination cycle is proposed by integrating a cascade evaporator (CE) system with an adsorption (AD) cycle. In this new innovative cycle, desorbed vapors from the AD are supplied to the CE to exploit the latent condensation energy within the evaporators arranged in both pressure and temperature cascades to improve the performance ratio of the cycle. Water production is improved more than tenfold with the hybrid cycle relative to that observed for the conventional AD cycle owing to a synergetic effect. This concept is demonstrated in a laboratory pilot plant with a cascade of three evaporators and simulation of eight evaporators.

show abstract

“…Recent publications appearing in the literature [58][59][60][61][62][63][64][65][66][67][68][69][70][71] have made great strike towards improving the efficacy of practical desalination methods. In one example, the hybridization of the conventional MED method with the adsorption desalination (AD) cycles has been extensively investigated at the King Abdullah University of Science and Technology.…”

mentioning

confidence: 99%

An exergy approach to efficiency evaluation of desalination

Shahzad

Son

et al. 2017

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

This paper presents an evaluation process efficiency based on the consumption of primary energy for all types of practical desalination methods available hitherto. The conventional performance ratio has, thus far, been defined with respect to the consumption of derived energy, such as the electricity or steam, which are susceptible to the conversion losses of power plants and boilers that burned the input primary fuels. As derived energies are usually expressed by the units, either kWh or Joules, these units cannot differentiate the grade of energy supplied to the processes accurately. In this paper, the specific energy consumption is revisited for the efficacy of all large-scale desalination plants. In today's combined production of electricity and desalinated water, accomplished with advanced cogeneration concept, the input exergy of fuels is utilized optimally and efficiently in a temperature cascaded manner. By discerning the exergy destruction successively in the turbines and desalination processes, the relative contribution of primary energy to the processes can be accurately apportioned to the input primary energy. Although efficiency is not a law of thermodynamics, however, a common platform for expressing the figures of merit explicit to the efficacy of desalination processes can be developed meaningfully that has the thermodynamic rigor up to the ideal or thermodynamic limit of seawater desalination for all scientists and engineers to aspire to.

show abstract

Fundamental and application aspects of adsorption cooling and desalination

Cited by 68 publications

References 26 publications

Energy and exergy analysis of a novel multiple-effect vapor chamber distillation system for high-salinity wastewater treatment

Energy and exergy analysis of a novel multiple-effect vapor chamber distillation system for high-salinity wastewater treatment

An Improved Multievaporator Adsorption Desalination Cycle for Gulf Cooperation Council Countries

An exergy approach to efficiency evaluation of desalination

Contact Info

Product

Resources

About