Performance investigation of an advanced multi-effect adsorption desalination (MEAD) cycle

Thu, Kyaw; Kim, Young Deuk; Shahzad, Muhammad Wakil; Saththasivam, Jayaprakash; Ng, Kim Choon

doi:10.1016/j.apenergy.2015.09.035

Cited by 68 publications

(25 citation statements)

References 46 publications

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“…They developed this correlation for pure water at saturation temperature ranges from 322 to 393 K. It can be noticed that there are two major gaps in available literature; firstly, no data is available for evaporation heat transfer for below 322 K and secondly, there is lack of data for salt solution as boiling point elevation changes with salt concentration. These two factors are important for processes industries falling film evaporators design as most of processes are performed below 322 K such as in food and desalination industries [30][31][32][33][34][35][36][37][38][39][40][41][42]. This was the main motivation of this study, to provide detailed parameters for falling film evaporators design for process industries.…”

Section: References Correlationmentioning

confidence: 99%

Design of Industrial Falling Film Evaporators

Shahzad¹,

Burhan²,

Ng³

2019

Heat and Mass Transfer - Advances in Science and Technology Applications

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The high performance evaporators are important for process industries such as food, desalination and refineries. The falling film evaporators have many advantages over flooded and vertical tubes that make them best candidate for processes industries application. The heat transfer area is the key parameter in designing of an evaporator and many correlations are available to estimate the size of tube bundle. Unfortunately, most of the correlation is available only for pure water and above 322 K saturation temperatures. Out of these conditions, the areas are designed by the extrapolation of existing correlations. We demonstrated that the actual heat transfer values are 2-3-fold higher at lower temperature and hence simple extrapolated estimation leads to inefficient and high capital cost design. We proposed an accurate heat transfer correlation for falling film evaporators that can capture both, low temperature evaporation and salt concentration effectively. It is also embedded with unique bubble-assisted evaporation parameter that can be only observed at low temperature and it enhances the heat transfer. The proposed correlation is applicable from 280 to 305 K saturation temperatures and feed water concentration ranges from 35,000 to 95,000 ppm. The uncertainty of measured data is less than 5% and RMS of regressed data is 3.5%. In this chapter, first part summarized the all available correlations and their limitations. In second part, falling film evaporation heat transfer coefficient (FFHTC) is proposed and model is developed. In the last part, experimentation is conducted and FFHTC developed and compared with conventional correlations.

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Section: References Correlationmentioning

confidence: 99%

Design of Industrial Falling Film Evaporators

Shahzad¹,

Burhan²,

Ng³

2019

Heat and Mass Transfer - Advances in Science and Technology Applications

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“…One of these technologies is MEDAD (Multi-Effect Distillation with an Adsorption Desorption cycle) which improves the water output for the same amount of energy input through the addition of an adsorption-desorption system. The economic analysis carried out by MEDAD developers showed that a 36.56% reduction in LCOW is possible through MEDAD as compared with MED technology [57][58][59][60]. With this reduction, figure 11, will reduce the final water price for MED to 0.527 USD/m 3, which is significantly lower than the reverse osmosis technology-based water price.…”

Section: Opportunity To Develop Renewable Energy Powered Cost-competimentioning

confidence: 99%

The Role of Nanofluids and Renewable Energy in the Development of Sustainable Desalination Systems: A Review

Singh¹,

Atieh²,

Al‐Ansari³

et al. 2019

Preprint

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Desalination accounts for 1% of the total global water consumption and is an energy-intensive process, with the majority of operational expenses attributed to energy consumption. Moreover, at present, a significant portion of the power comes from traditional fossil fuel-fired power plants and the greenhouse gas emissions associated with power production along with concentrated brine discharge from the process, pose a severe threat to the environment. Due to the dramatic impact of climate change, there is a major opportunity to develop sustainable desalination processes to combat the issues of brine discharge, greenhouse gas emissions along with a reduction in energy consumption per unit of freshwater produced. Nanotechnology can play a vital role to achieve specific energy consumption reduction as nanofluids application increases the overall heat transfer coefficient enabling the production of more water for the same size desalination plant. Furthermore, concentrated brine discharge has a negative impact on the marine ecosystems, and hence, this problem must also be solved to support the objective of sustainable desalination. Several studies have been carried out in the past several years in the field of nanotechnology applications for desalination, brine treatment and the role of renewable energy in desalination. This paper aims to review the major advances in this field of nanotechnology for desalination. Furthermore, a hypothesis for developing an integrated solar thermal and nanofluid sustainable desalination system, based on the cyclic economy model is proposed.

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“…When employed in a cycle, these adsorption and desorption processes can be applied to perform heat pumping. Adsorption process utilises the chemical potential stored in the adsorbent and can trigger latent heat removal from the evaporator due to the vapour migration [16]. On the other hand, desorption process releases previously-adsorbed gas molecules to the condenser while restoring the chemical potential.…”

Section: Working Principles and Cop Limit Of Adsorption Systemsmentioning

confidence: 99%

Critical Review on the Developments and Future Aspects of Adsorption Heat Pumps for Automobile Air Conditioning

Maeda

Thu

Maruyama³

et al. 2018

Applied Sciences

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Emission and heat rejection from automobiles are largely responsible for urban environmental issues. Adsorption systems driven by engine waste heat exhibit huge potential to meet the demand for cabin thermal comfort while improving fuel economy. However, the mechanical vapour compression (MVC) systems are still the undisputed champions in automobile air conditioning. This paper provides a critical review on the development and progress of adsorption heat pumps specifically for automobile air conditioning. In doing so, some of the progress and development in land-based adsorption chillers (heat pump), which are not realistically relevant to automobile adsorption systems, are explicitly excluded. Matching the energy density, durability, and reliability of the MVC systems remain major hurdles. The importance of improving the energy density based on the overall system weight or volume, real-world tests under various driving modes and durability aspects are discussed.

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Performance investigation of an advanced multi-effect adsorption desalination (MEAD) cycle

Cited by 68 publications

References 46 publications

Design of Industrial Falling Film Evaporators

Design of Industrial Falling Film Evaporators

The Role of Nanofluids and Renewable Energy in the Development of Sustainable Desalination Systems: A Review

Critical Review on the Developments and Future Aspects of Adsorption Heat Pumps for Automobile Air Conditioning

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