Performance of evacuated flat plate solar thermal collectors

Moss, R.W.; Shire, Stan; Henshall, Paul; Arya, Farid; Eames, Philip C.; Hyde, Trevor

doi:10.1016/j.tsep.2018.09.003

Cited by 45 publications

(14 citation statements)

References 18 publications

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“…The part load behavior of the polygeneration modules were modelled using equipment normalized performance data found in [2]: for the cogeneration based on internal combustion engines [35,[41][42][43], for solar sorption integrated systems [44][45][46], for vapor compression heat pumps [47][48][49], for PV [50,51]. The part load performance of the other polygeneration modules are based on the manufacturer performance data: STC [52][53][54][55] VCC [58]. Modeling of electricity consumption was limited to the consumption for the purposes of running the modelled heating and ventilation system in addition to the polygeneration system, which accounts for most of the building electricity consumption, due to difficulties of prediction of electricity consumption during a typical year [57].…”

Section: Mathematical Modeling and Simulation Of The Energy Loads Of mentioning

confidence: 99%

Techno-economic optimization of configuration and capacity of a polygeneration system for the energy demands of a public swimming pool building

et al. 2018

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A polygeneration system is an energy system capable of providing multiple energy outputs to meet local demands, by application of high process integration. In this paper, optimal configuration and capacity of a polygeneration system for an indoor swimming pool building is determined by application of a method based on TRNSYS simulation and GenOpt optimization software. Based on the applicability, a superstructure of the polygeneration system is integrated, consisting of the following polygeneration modules: an internal combustion engine cogeneration module, a vapor compression chiller, and adsorption chiller, a ground source heat pump, flat plate solar thermal collectors, photovoltaic collectors, and heat storage. Annual behavior of energy loads of the public swimming pool building during a typical meteorological year and the polygeneration system are modeled and simulated using TRNSYS software, whereas techno-economic optimization is performed by GenOpt optimization. The results indicated the optimal configuration of the polygeneration system for the modelled energy demands, as well as the optimal capacity of the polygeneration modules, thus defining the optimal capacity of the polygeneration system for the energy demands of the public swimming pool building.

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Section: Mathematical Modeling and Simulation Of The Energy Loads Of mentioning

confidence: 99%

Techno-economic optimization of configuration and capacity of a polygeneration system for the energy demands of a public swimming pool building

et al. 2018

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“…The gap between two the concentric tubes is vacuumed, hence the non-radiative heat loss inside the ETC is deeply suppressed and the heatcollecting temperature is improved relative to the common flat-plate solar collector [22,23]. Recently, the evacuated flat-plate collector has also been proposed and devised, in which the absorber panel is placed in a vacuum environment and is completely isolated to the glazing cover, backside thermal insulation, and side frames, therefore its conductive and convective heat losses are negligible and provide heat with relatively high temperature [24][25][26][27][28][29][30]. Farid et al [26] fabricated two evacuated enclosures as prototype components for evacuated flat-plate solar collectors and tested the enclosures, respectively at 0.0033 Pa, 17 Pa, and atmospheric pressure, corresponding to stagnation temperature of 122.8, 104.2, and 103.6 °C for the absorber plate.…”

Section: Introductionmentioning

confidence: 99%

“…Farid et al [26] fabricated two evacuated enclosures as prototype components for evacuated flat-plate solar collectors and tested the enclosures, respectively at 0.0033 Pa, 17 Pa, and atmospheric pressure, corresponding to stagnation temperature of 122.8, 104.2, and 103.6 °C for the absorber plate. Roger et al [27] found that, after being evacuated to below 0.5 Pa, the heat loss coefficient of a solar collector dropped from 7.43 to 3.65 W/(m 2 •K) and the efficiency under a nominal test condition increased from 36% to 56%. They also suggested that, by connecting the evacuated collector to an 85 °C district heating main, it would provide 66% more heat than the evacuated tube collectors and 112% more than the conventional flat plate collectors throughout a year.…”

Section: Introductionmentioning

confidence: 99%

A parametric study on the performance characteristics of an evacuated flat-plate photovoltaic/thermal (PV/T) collector

Guo

Zhao

et al. 2021

Renewable Energy

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“…The purpose of comparing the two collectors was not only to obtain environmental factors, but also to help in the development of the proposed prototype. Among the collectors, there is an interesting solution currently available commercially, which are evacuated flat plate collectors [82][83][84][85][86]. Works available in the literature relate primarily to improved efficiency, energy optimization, or determining their performance.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of the Use of Phase Change Material in an Evacuated Solar Tube Collector

Jachura

Sekret

2021

Energies

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This paper presents an environmental impact assessment of the entire cycle of existence of the tube-vacuum solar collector prototype. The innovativeness of the solution involved using a phase change material as a heat-storing material, which was placed inside the collector’s tubes-vacuum. The PCM used in this study was paraffin. The system boundaries contained three phases: production, operation (use phase), and disposal. An ecological life cycle assessment was carried out using the SimaPro software. To compare the environmental impact of heat storage, the amount of heat generated for 15 years, starting from the beginning of a solar installation for preparing domestic hot water for a single-family residential building, was considered the functional unit. Assuming comparable production methods for individual elements of the ETC and waste management scenarios, the reduction in harmful effects on the environment by introducing a PCM that stores heat inside the ETC ranges from 17 to 24%. The performed analyses have also shown that the method itself of manufacturing the materials used for the construction of the solar collector and the choice of the scenario of the disposal of waste during decommissioning the solar collector all play an important role in its environmental assessment. With an increase in the application of the advanced technologies of materials manufacturing and an increase in the amount of waste subjected to recycling, the degree of the solar collector’s environmental impact decreased by 82% compared to its standard manufacture and disposal.

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Performance of evacuated flat plate solar thermal collectors

Cited by 45 publications

References 18 publications

Techno-economic optimization of configuration and capacity of a polygeneration system for the energy demands of a public swimming pool building

Techno-economic optimization of configuration and capacity of a polygeneration system for the energy demands of a public swimming pool building

A parametric study on the performance characteristics of an evacuated flat-plate photovoltaic/thermal (PV/T) collector

Life Cycle Assessment of the Use of Phase Change Material in an Evacuated Solar Tube Collector

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