Theoretical analysis of a solar-powered multi-effect distillation integrated with concentrating photovoltaic/thermal system

Zhang, Wei; Hu, Zicheng; Xu, Hao; Dai, Xiaoli; Wang, Junfeng; Jiao, Wenrui; Yuan, Yanping; Phelan, Patrick E.

doi:10.1016/j.desal.2019.114074

Cited by 24 publications

(6 citation statements)

References 39 publications

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“…𝑀 𝐵𝑜𝑢𝑡,𝑖−1 + 𝑀 𝑉𝐹𝐵,𝑖 = 𝑀 𝑇,𝑖 + 𝑀 𝐵𝑜𝑢𝑡,𝑖 , (10) 𝑀 𝑇,𝑖 = 𝑀 𝐷,𝑖 + 𝑀 𝑉𝐹𝐵,𝑖 + 𝑀 𝑉𝐹𝐸,𝑖 , (11) (1 − 𝛼 𝑖−1 )𝑀 𝑇,𝑖−1 + 𝑀 𝐹𝐵,𝑖−1 + 𝛼 𝑖 𝑀 𝑇,𝑖 = 𝑀 𝑉𝐹𝐵,𝑖 + 𝑀 𝐹𝐵,𝑖 , (…”

Section: Effects 2 Andmentioning

confidence: 99%

“…Their system produced 8.6 m 3 per m 2 of collector yearly and they managed to reduce the cost and the plant water consumption by 2 m 3 of seawater per m 3 of feed water. The concentrated photovoltaic/thermal collector was coupled to MED for simultaneous production of water, power and heating by Zhang et al, [10]. The system was studied from energy and exergy perspectives.…”

Section: Introductionmentioning

confidence: 99%

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Energy analysis of a small-scale multi-effect distillation system powered by photovoltaic and thermal collectors

SHETA¹,

Elwardany²,

Hassan³

2023

Journal of Energy Systems

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Powering thermal desalination technologies by renewable energy is believed to be a viable solution to overcome the worldwide freshwater scarcity problem without causing more damage to the environment. In this paper, a multi-effect distillation system (MED) with mechanical vapor compression is powered by the generated electrical power of photovoltaic/thermal collectors and assisted by the by-product thermal power generated. The system is sized according to thermal power needed and designed for small-scale application and weather conditions of Alexandria, Egypt. Excess electricity is injected into the grid and hot water storage tank is used as a back-up to compensate low and fluctuating radiation. Results show that, at a saturation temperature of MED’s heating steam of 55 °C, freshwater production is 11.1 m3/day in 10 hours of operation, system specific power consumption is 9.72 kWh/m3, specific area is 317.04 m2s/kg, and performance ratios of the desalination unit is 3.33 and 6.97 for the overall system. However, at T = 65 °C the system’s electrical energy is totally absorbed by the compressor, and the system’s performance decreases.

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Section: Effects 2 Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy analysis of a small-scale multi-effect distillation system powered by photovoltaic and thermal collectors

SHETA¹,

Elwardany²,

Hassan³

2023

Journal of Energy Systems

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“…Zhang et al 10 built a CPVT/MED system for producing not only desalinated water but also electricity and heating. The CPVT was sized according to the required thermal load of the MED.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a PVT-powered multi-effect mechanical vapor compression desalination system at different feed configurations: energy, exergy, and economic aspects

Sheta,

Hassan

2024

Environ. Sci.: Water Res. Technol.

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“…Thus far in the literature, the majority of PV-T-powered MED installations tend to consider only a single technology for energy generation, either concentrating [46,47] or non-concentrating PV-T collectors [48], with most considering concentrating designs [28]. Further, before constructing an MED installation, the optimum and necessary number of collectors needs to be assessed, and there exists a gap in the existing open-source and licensable modelling tools available when assessing PV-T-driven desalination systems, with most either considering only a single technology [49,50] or having no scope for desalination and drinking-water demands [51,52].…”

Section: Introductionmentioning

confidence: 99%

Lifetime optimisation of integrated thermally- and electrically-driven solar desalination plants

Markides,

Winchester,

Huang

et al. 2023

Preprint

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We compare the performance across different locations of systems employing photovoltaic (PV) panels, flat-plate and evacuated-tube solar-thermal (ST), and hybrid photovoltaic-thermal (PV-T) collectors to fulfil the energy demands (both thermal and electrical) of multi-effect distillation (MED) desalination plants. We consider large- (1700 m3/day), medium- (120 m3/day) and small-scale (3 m3/day) MED plants. We find a strong dependence of both the capacity and configuration of the solar collectors used on both the cost of sourcing electricity from the grid and the specific collector employed. We find mean grid-electricity fractions range from 47%, for the lowest grid-cost location, to 2.5% for the highest grid-cost location. We find that systems using PV-T and ST collectors meet between 49% and 62% of the hot-water demand at these locations, respectively. We find lifetime costs for the smallest-, medium- and largest-scale plants' energy-generation systems as low as 0.209, 3.35 and 50.8 million USD, respectively, corresponding to specific costs of 6.37, 2.55 and 2.74 USD/m3. We find that systems using solar collectors, when optimised for the lowest specific cost, result in associated CO2eq emissions equal to, or higher than, those associated with grid-driven reverse osmosis. These results highlight the need to consider the environmental footprint of these systems, not only their cost, to ensure that desalination is in-line with the United Nations' Sustainable Development Goal 6 (SDG6).

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Theoretical analysis of a solar-powered multi-effect distillation integrated with concentrating photovoltaic/thermal system

Cited by 24 publications

References 39 publications

Energy analysis of a small-scale multi-effect distillation system powered by photovoltaic and thermal collectors

Energy analysis of a small-scale multi-effect distillation system powered by photovoltaic and thermal collectors

Analysis of a PVT-powered multi-effect mechanical vapor compression desalination system at different feed configurations: energy, exergy, and economic aspects

Lifetime optimisation of integrated thermally- and electrically-driven solar desalination plants

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