Exergo economic analysis of solar-assisted hybrid power generation systems integrated with thermochemical fuel conversion

Yue, Ting; Lior, Noam

doi:10.1016/j.apenergy.2017.01.055

Cited by 20 publications

(3 citation statements)

References 27 publications

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“…Exergoeconomic analysis is applicable to the market pricing strategy for production plant supplies and to investment decisions and feasibility studies [19,23]. The hourly exergy cost balance of a system or component is written as [38,39]:…”

Section: Exergoeconomic Analysismentioning

confidence: 99%

Exergy and Exergoeconomic Analysis of a Combined Cooling, Heating, and Power System Based on Solar Thermal Biomass Gasification

Wang

et al. 2019

Energies

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The purpose of this paper is to improve the utilization of renewable energy by exergy and exergoeconomic analysis of the novel combined cooling, heating, and power (CCHP) system, which is based on solar thermal biomass gasification. The source of heat to assist biomass and steam gasification is the solar heat collected by a dish collector, and the product gas being fuel that drives the internal combustion engine to generate electricity and then to produce chilled/hot water by a waste heat unitization system. The analysis and calculation of the exergy loss and exergy efficiency of each component reveal the irreversibility in the heating and cooling conditions. Then, the exergoeconomic costs of multi-products such as electricity, chilled water, heating water, and domestic hot water are calculated by using the cost allocation method based on energy level. The influencing factors of the unit exergy cost of products are evaluated by sensitivity analysis, such as initial investment cost, biomass cost, service life, interest rate, and operating time coefficient. The results reveal that the internal combustion engine takes up 49.2% of the total exergy loss, and the most effective method of products cost allocation is the exergoeconomic method based on energy level and conforms to the principle of high energy level with high cost.

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Section: Exergoeconomic Analysismentioning

confidence: 99%

Exergy and Exergoeconomic Analysis of a Combined Cooling, Heating, and Power System Based on Solar Thermal Biomass Gasification

Wang

et al. 2019

Energies

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“…Solar energy with abundant availability has been widely utilized via photovoltaics, photocatalysis, and photothermal conversion [ 1 , 2 ]. Solar desalination and water purification, heating saline/contaminated water for clean vapour generation by photothermal conversion, have attracted tremendous attention in addressing the pressing global issues of water scarcity and water contamination, but facing challenges to achieve efficient energy utilization [ 3 , 4 ]. Recently, a new concept of heat localization was proposed for solar vapour generation with a high energy efficiency of 85% [ 5 ], in which heat dissipation was dramatically reduced by localizing heat at the interface between a light absorber and a thin water layer.…”

Section: Introductionmentioning

confidence: 99%

Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency

Gong

Yang

et al. 2019

Nano-Micro Lett.

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HIGHLIGHTS• New concept of solar vapour gap membrane distillation (SVGMD) is based on synergizing of nanochannel-guided water transport, localized heating, and membrane separation from feed solution.• First-time introduction of the gap enables long-term stability and non-fouling membrane.• SVGMD exhibits a solar-water energy efficiency higher than state-of-the-art solar vapour systems.ABSTRACT Photothermal membrane distillation (MD) is a promising technology for desalination and water purification. However, solar-thermal conversion suffers from low energy efficiency (a typical solar-water efficiency of ~ 50%), while complex modifications are needed to reduce membrane fouling. Here, we demonstrate a new concept of solar vapour gap membrane distillation (SVGMD) synergistically combining self-guided water transport, localized heating, and separation of membrane from feed solution. A free-standing, multifunctional light absorber based on graphene array is custom-designed to locally heat the thin water layer transporting through graphene nanochannels. The as-generated vapour passes through a gap and condenses, while salt/contaminants are rejected before reaching the membrane. The high solar-water efficiency (73.4% at 1 sun), clean water collection ratio (82.3%), excellent anti-fouling performance, and stable permeate flux in continuous operation over 72 h are simultaneously achieved. Meanwhile, SVGMD inherits the advantage of MD in microorganism removal and water collection, enabling the solar-water efficiency 3.5 times higher compared to state-of-the-art solar vapour systems. A scaled system to treat oil/seawater mixtures under natural sunlight is developed with a purified water yield of 92.8 kg m −2 day −1 .Our results can be applied for diverse mixed-phase feeds, leading to the next-generation solar-driven MD technology.

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“…Traditional vaporization is expensive and usually involves the consumption of depletable fossil fuels with heavy emissions of greenhouse gas, e.g. CO2 [6,7]. Recently, the utilization of solar energy to enhance evaporation emerges to be an attractive strategy for sustainable and practical systems, which shows great potential applications in sterilizations [8],…”

Section: Introductionmentioning

confidence: 99%

Recycled waste black polyurethane sponges for solar vapor generation and distillation

et al. 2017

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Exergo economic analysis of solar-assisted hybrid power generation systems integrated with thermochemical fuel conversion

Cited by 20 publications

References 27 publications

Exergy and Exergoeconomic Analysis of a Combined Cooling, Heating, and Power System Based on Solar Thermal Biomass Gasification

Exergy and Exergoeconomic Analysis of a Combined Cooling, Heating, and Power System Based on Solar Thermal Biomass Gasification

Graphene Array-Based Anti-fouling Solar Vapour Gap Membrane Distillation with High Energy Efficiency

Recycled waste black polyurethane sponges for solar vapor generation and distillation

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