Analysis of solar desalination system using heat pump

Amin, Zakaria Mohd.; Hawlader, Mohammad Nurul Alam

doi:10.1016/j.renene.2014.07.028

Cited by 59 publications

(32 citation statements)

References 18 publications

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“…The reason for this result is that the power consumption decreased with a higher T e at a constant T c . A previous study by Amin and Hawlader showed that this system has the capacity to produce 1.38 kg of water per hour with a PR of 0.43‐0.88. Similar work by Chen et al using a 14‐stage system achieved a PR of 6.5.…”

Section: Resultsmentioning

confidence: 99%

“…Li et al proposed a new combined power and desalination system driven by low‐grade heat for concentrated brine, and the system had an overall exergy efficiency of close to 40% for a salt concentration of 35 g/kg using a low‐temperature heat source at 150°C. Amin and Hawlader investigated a pilot solar desalination system coupled to a heat pump. The performance ratio (PR) ranged from 0.43 to 0.88, the average coefficient of performance (COP) was 8, and the highest distillate production recorded was 1.38 kg/h.…”

Section: Introductionmentioning

confidence: 99%

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Wastewater desalination system utilizing a low-temperature heat pump

Yang¹,

Zhang²,

XueJun

et al. 2017

Int J Energy Res

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Summary A wastewater desalination system based on a low‐temperature air source heat pump was developed and studied in this paper. The system consists of 2 main parts: the wastewater flow process and the heat pump cycle. A series of experiments were conducted on the system under different conditions, and the effect of the evaporation temperature was investigated. This system can reach equilibrium at any evaporation temperature using the combination of the compressor and vacuum pump. To treat wastewater with low boiling point organic matter, the system was operated at a low evaporation temperature of 48°C. The organic matter remained in the concentrated wastewater, and the organic removal was approximately 97%. Three kilograms of treated water was produced in 1 hour with an energy consumption of 250 W. The performance ratio (PR) obtained from the experiments ranged from 4.6 to 7.3. The cost for treating 1 kg of water was 0.038 yuan CNY assuming 0.5 yuan CNY per kWh at the compressor frequency of 50 Hz.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wastewater desalination system utilizing a low-temperature heat pump

Yang¹,

Zhang²,

XueJun

et al. 2017

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…The performance ratio that was obtained from the experiments ranges from 0.77 to 1.15 and the coefficient of performance of the system ranges from 5.0 to 7.0. Zakaria et al investigated a solar assisted pilot desalination system consisting of a direct expansion and using day and night meteorological conditions in Singapore. From the experiments, the performance ratio was found to vary between 0.43 and 0.88, the average coefficient of performance was 8 and the maximum distillate production recorded was 1.38 kg/h.…”

Section: Introductionmentioning

confidence: 99%

A novel vacuum wastewater treatment plant integrated with a solar absorption system

Saleh

Al‐Nimr

2019

Int J Energy Res

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Summary In this investigation, a novel use of the solar absorption refrigeration systems was introduced by using it to enhance the operation of vacuum wastewater treatment plant. Wastewater treatment systems require a source of heat for evaporation, a cooling section for condensation and a mean of evacuation to facilitate evaporation. The solar absorption system can take over the first two tasks. Among the commercially available vacuum evaporators, one was selected and modified by replacing the conventional heat pump with the solar absorption system. Two validated mathematical models available in the literature, one for solar absorption subsystem and one for vacuum evaporation subsystem, were integrated together to perform the analysis. The impacts of solar absorption subsystem parameters along with vacuum evaporator subsystem parameters on the overall performance were investigated using the developed program. System performance was evaluated in terms of evaporation rate and condensate rate production. It was found that the degree of superheat had the greatest impact on the rate of evaporation. At low levels of supply temperature to the vacuum chamber, using only heat provided by the absorption system, the evaporation rate exceeded 60 kg/h. If the hot water was further heated by passing through the solar collector storage tank, the evaporation rate exceeded 200 kg/h.

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“…Solar energy is most cleanly, inexhaustible of entirely freely available energy resources and uses of solar energy made tremendous match by minimum temperature requirement of heat pump. The evaporator-collector wrapped up both energies i.e., solar energy and ambient energy, because of the low working temperature [6]. This paper gives an overall review and technical assessments of various desalination systems for brackish water separator.…”

Section: Introductionmentioning

confidence: 99%

Different Techniques for Separation of Brackish Water

Rani¹,

Suresh²,

Kumar³

2018

Asian J. Chem.

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Desalination is a convenient process to develope a fresh water supply in coastal areas. Reverse osmosis and conventional thermal distillation can be used for implementing the large-scale seawater desalination. Desalination is the process in which fresh water is formed from seawater or brackish water by removing dissolved salt, to make it suitable for human consumption. A high yield of disposable water is manufactured by the desalination process. Desalination permits a widening in the utilization of existing water sources by manufacturing freshwater from briny water sources. Fig. 1 shows the process for the desalination system. Over the past era, in many parts of the world, conventional water production costs have been rising and costs for desalination have been abating, subsequently desalination has turned out to be all the more financially appealing and competitive [1,2].The lack of water is usually depicted in volumetric or absolute terms. The most scarcity studies focus on how the 'problem' of scarcity is raised, therefore to overcome this issue the first step is heating of an air stream by using solar energy for heating of an air stream and in the next step to seawater adding into the hot air in imperative to moisten, then final step is a humid air cooling providing potable water as a condensate. The conventional technique for seawater desalination is to vapourize salty water and afterward condense the rising vapour being free of salt. Using fossil fuels as an energy source, these desalination plants are planned as multi-stage evaporator plants. This technique is the foundation for a day-to-day production of million cubic meters of water. This review is focused on the performance analysis of different techniques such as multistage flash distillation, multi-effect distillation, vapour-compression distillation, solar humidification, electrodialysis reversal, reverse osmosis, nanofiltration, forward osmosis, solar desalination for separation of brackish water. Based on literature discussion with their remarks from different techniques, solar desalination has achieved 87 % of efficiency and lower the total dissolved solids content as 40 ppm. Moreover, cost of distilled water per liter $ 0.029 from solar desalination plant. With this advantages, solar desalination has more attractive technique while compare to other towards better future and balanced eco-system.

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Analysis of solar desalination system using heat pump

Cited by 59 publications

References 18 publications

Wastewater desalination system utilizing a low-temperature heat pump

Wastewater desalination system utilizing a low-temperature heat pump

A novel vacuum wastewater treatment plant integrated with a solar absorption system

Different Techniques for Separation of Brackish Water

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