Theoretical and experimental study of solar thermal performance of different greenhouse cladding materials

Al-Mahdouri, Adil; Gonome, Hiroki; Okajima, Junnosuke; Maruyama, Shigenao

doi:10.1016/j.solener.2014.05.006

Cited by 24 publications

(8 citation statements)

References 31 publications

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“…The plastic sheets are mainly made of fiberglass, polymethyl methacrylate, or polycarbonate [39,40]. In most cases, the plastic materials are preferred because they possess the ideal UV light transmission, heat retention capabilities, ideal transmission in the photosynthetically active radiation (PAR) bandwidth [41], and are durable.…”

Section: Glass Plastic Sheets and Filmsmentioning

confidence: 99%

Environmental Sustainability of Greenhouse Covering Materials

Maraveas

2019

Sustainability

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The fundamental objective of the review article was to explore the ecological sustainability of greenhouse covering material based on the following themes; considerations for greenhouse materials, properties of polymers and glass, additives, fillers, stabilizers and reinforcements, performance, Ultraviolet (UV) transmittance, phase change materials (PCMs), and environmental sustainability. A comparison of various polymers (polyvinyl chloride (PVC), acrylic, D-polymer, Linear low-density polyethylene (LLDPE), polyolefins), and silica glasses illustrated that each type of greenhouse cladding material has its unique merits and limitations. The performance of silica glasses, PVC, polyolefins was influenced by weather, greenhouse design, plant under cultivation, percentage UV transmittance, incorporation of additives and stabilizers, reinforcements, and integration of photovoltaic panels into the greenhouse roof among other factors. Polymers can be customized to achieve 0%UV transmittance, slow-insecticide release, and anti-microbial properties. In contrast, glass materials are preferred based on suitable photosynthetically active radiation (PAR) transmittance and near-infrared (NIR) reflection and less risk of photo-oxidation. From an ecological perspective, polymers can be recycled via mechanical and chemical recycling, closed-loop cycling, and polymerization of bio-based feedstock. However, post-consumer plastic films do not possess the same optical and energy properties as virgin polymers. The combined benefits of different polymers suggest that these materials could be adopted on a large scale over the long-term.

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Section: Glass Plastic Sheets and Filmsmentioning

confidence: 99%

Environmental Sustainability of Greenhouse Covering Materials

Maraveas

2019

Sustainability

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“…Due to its high transparency, PMMA is also known as organic glass; this property makes it a perfect alternative to glass for applications that need to be lightweight and have impact resistance [8]. In particular, the photophysical properties of fluorescent dyed PMMA have received considerable attention for interesting applications such as photonics, optoelectronic devices, optical filters, waveguides, luminescent solar concentrators, and greenhouse claddings [9,10,11,12,13]. Perylene diimide (PDI) dyes have drawn attention for many years as efficient dopants for transparent polymers due to their fluorescence properties as industrial pigments [14].…”

Section: Introductionmentioning

confidence: 99%

Spectral Properties of PMMA Films Doped by Perylene Dyestuffs for Photoselective Greenhouse Cladding Applications

et al. 2019

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Luminescent polymethylmethacrylate (PMMA) films were prepared by the solvent-casting technique from polymer solution doped with different concentrations of red perylene dyestuffs (KREMER 94720 and KREMER 94739). The effect of the dye concentration on the structure and spectroscopic properties was studied using X-ray diffraction (XRD), transmission electron microscope (TEM) optical absorption, and fluorescence spectroscopy. The optimum dye concentration of photoselective PMMA films was determined by the fluorescence spectroscopy measurements and showed the best emission properties for the doping concentration 10−3 wt % of the investigated dyes. The accelerated photostability tests showed promising stability of the prepared films towards terrestrial solar ultraviolet radiation (UVA). The results endorsed a promising application of the investigated films in photoselective greenhouse cladding applications as the optimized film fluoresces at the action spectra of special chlorophyll a.

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“…At present, the establishment of a solarium/greenhouse attached to a building [1] and a theoretical nongray rigorous model [2], the use of phase change materials [3] 、 biomass energy [4] and biological control [5], shows that people pay more and more attention to energy saving, environmental protection and food safety issues. But there is less research on how to calculate temperature in greenhouse take advantage of weather forecast.…”

Section: Introductionmentioning

confidence: 99%

24-hour greenhouse temperature prediction model based on the weather forecast

Wang¹,

Yu²

2015

Proceedings of the 2015 Information Technology and Mechatronics Engineering Conference

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The relationship of maximum temperature、minimum temperature、mean temperature and 24-hour temperature between inside and outside greenhouse based on the weather forecast were studied in this paper. The established prediction models were tested and the error was analyzed. Correlation coefficients of maximum temperature、minimum temperature and mean temperature between inside and outside greenhouse are 0.9059、0.9472 and 0.9627 separately, Correlation coefficients of 24-hour temperature between inside and outside greenhouse are from 0.8797 to 0.9868, all passed the test of significance at the 0.01 level, all the standard error/mean of prediction models are less than 15%. Correlation coefficients between the real value and predicted value are from 0.8916 to 0.9525, the analysis shows that the prediction models have good predict performances, so as to provide some help for the regulation of greenhouse environment.

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Theoretical and experimental study of solar thermal performance of different greenhouse cladding materials

Cited by 24 publications

References 31 publications

Environmental Sustainability of Greenhouse Covering Materials

Environmental Sustainability of Greenhouse Covering Materials

Spectral Properties of PMMA Films Doped by Perylene Dyestuffs for Photoselective Greenhouse Cladding Applications

24-hour greenhouse temperature prediction model based on the weather forecast

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