Experimental evaluation of hybrid solar still using waste heat

Park, Chang-Dae; Lim, Byung-Ju; Chung, Kyeong Woo; Lee, Sung-Soo; Kim, Youngman

doi:10.1016/j.desal.2015.10.004

Cited by 60 publications

(8 citation statements)

References 23 publications

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“…A mathematical model was developed for system optimization. Park et al [74] designed and tested an improved multiple effect diffusion (MED) hybrid solar still at different heat input, sea water flow rate and sea water level in the basin (Figure 9). However, maintaining and working at low pressure in the still affect its expected life which is to be considered during economic analysis.…”

Section: Multistage/multieffect Solar Stillsmentioning

confidence: 99%

“…Chong et al [73] developed multiple effect diffusion solar still (MEDS) coupled with a vacuum tube collector and a heat pipe to improve the distillation process. Park et al [74] designed and tested an improved multiple effect diffusion (MED) hybrid solar still at different heat input, sea water flow rate and sea water level in the basin (Figure 9). Performance of designed solar still was tested using waste heat from the exhaust gas of small electric generator together with solar radiations.…”

Section: Multistage/multieffect Solar Stillsmentioning

confidence: 99%

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Study of water desalination techniques and a review on active solar distillation methods

Manchanda

Kumar

2017

Env Prog and Sustain Energy

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Energy crisis and water born diseases caused by impure water are two major concerns of the present era. Various techniques have been used to make saline/brackish water potable. Filtration, precipitation, sterilization, chemical treatment, etc. are some processes that remove macro impurities from impure water. Distillation is thermal energy‐based process that effectively removes contaminants from impure water. Reverse osmosis is a membrane‐based technique widely used for the purification purposes. Electrodialysis, Ion‐exchange, and Freezing are some other processes used to get soft/distilled water for various commercial and domestic uses. Most of the desalination techniques utilize energy from the nonrenewable energy sources. Solar distillation is one of the solutions of getting potable water using solar energy. Solar distillation unit coupled with thermal collectors, photovoltaic panels, and concentrators makes the system active and increases the distillate three to six times than conventional units. Multistage, multieffect active solar still is observed to give an average distillate output of 20 kg/m2/d. Economic analysis also shows that active solar still is a good replacement of nonrenewable energy based water purification techniques. In this article, different water desalination techniques with their economic analysis are briefly discussed. Detailed comprehensive review of researches carried out on active solar still system considering their designs, performance parameters, different hybrid combinations, along with challenges, opportunities, future scope of improvements have also been highlighted. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 444–464, 2018

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Section: Multistage/multieffect Solar Stillsmentioning

confidence: 99%

Section: Multistage/multieffect Solar Stillsmentioning

confidence: 99%

Study of water desalination techniques and a review on active solar distillation methods

Manchanda

Kumar

2017

Env Prog and Sustain Energy

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“…Therefore, substantial improvement of productivity should be made on solar still for more practical applications. Multi-effect solar still (MES) was developed to overcome this low productivity problem, by recycling wasted latent heat repeatedly [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. As shown in Figure 1, in MES, multiple layers of evaporating wicks and condensing surface are stacked together [14].…”

Section: Desalinationmentioning

confidence: 99%

“…However, it may increase discrepancy between solar incident angle to the system window, which reduces solar energy usage. Reflecting mirrors [12,24] or tilted window [8,9,13,27] could be placed in front of the vertical layers to maximize solar intensity. However, it may increase the system cost.…”

Section: Desalinationmentioning

confidence: 99%

Low-Cost Multi-Effect Solar Still: Alternative Appropriate Technology for Personal Desalination

Pak¹

2017

Desalination

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Multi effect solar still (MES) has a stack of multiple layers for evaporation and condensation. The latent heat dissipated during condensation at the front layers are repeatedly recycled for evaporation at the back layers to increase overall desalination productivity. Despite of high efficiency and long history, MES has not been widely used yet, because of relative high cost. In this chapter, newly designed MES is introduced. Since it has low cost, light weight material and simple structure, it could be easily mass even at less developed country. The cost of production for a 1 m 2 unit is expected to be less than 300 USD. Structural features are introduced with experimental result which was outdoor tested with homemade lab prototype with 0.219 m 2 effective area. 9kg/m 2 per day of fresh water was obtained at sunny day (19.5MJ/m 2) in Seoul, Korea, which is close to WHO's recommended minimal daily water supply for individuals (7.5~15 liters). For more practical implementation, further development on prototype and production process should be made as well as long term outdoor test under actual climate it would be used. Worldwide collaboration would be necessary for speeding up implementation.

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“…The first large-scale solar distillation plant was built in Chile in 1982 [5] using conventional stills. The literature review revealed that many designs for solar stills have been proposed around the world to improve the yield, ranging from conventional ones to complex improved models [6][7][8][9][10][11][12][13] that are based on calculations, suitable mathematical models and efficient computational simulations [14][15][16]. The evaluation of a solar still performance requires knowledge of the environmental characteristics of the zone where the still is to be installed.…”

Section: Introductionmentioning

confidence: 99%

Effect of different geographic altitudes on the performance of a conventional solar still with arsenic and boron removal efficiency in an arid zone

Yavara

Torres

Zambra

2018

IyU

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Objectives: Report the exploratory study results of the performance of a conventional solar still prototype using seawater and brackish water (river and well) at three locations in northern Chile at different geographical heights. Materials and methods: A solar still with an effective distillation area of 0.54 m2 was used. Three tests were performed with seawater, 1 with river water and 1 with well water. The temperatures and environmental parameters were measured every 10 minutes for 36 continuous hours. The efficiency was evaluated in terms of seawater and the capacity to remove natural contaminants from brackish water. Results and discussion: The productivity in the three selected areas was 3 and 4 L/m2 for seawater and brackish water, respectively. The removal of boron and arsenic complies with the regulations of the country. Conclusion: The results obtained are of exploratory character for the zones, where the geographic height and the total dissolved solids are factors that determine the performance of a passive solar still, which is higher when water is used with low concentrations of solids.

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Experimental evaluation of hybrid solar still using waste heat

Cited by 60 publications

References 23 publications

Study of water desalination techniques and a review on active solar distillation methods

Study of water desalination techniques and a review on active solar distillation methods

Low-Cost Multi-Effect Solar Still: Alternative Appropriate Technology for Personal Desalination

Effect of different geographic altitudes on the performance of a conventional solar still with arsenic and boron removal efficiency in an arid zone

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