Structural analysis of greenhouses: A case study in Turkey

Kendirli, Berna

doi:10.1016/j.buildenv.2005.04.013

Cited by 26 publications

(10 citation statements)

References 2 publications

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“…Greenhouses, regardless of their degrees of complexity, attempt to provide ideal conditions for adequate plant growth throughout the year [26,27]. The principal regulated parameters are light, temperature, humidity and air quality [28][29][30]. The origin of the greenhouse goes back to ancient times.…”

Section: Conventional Greenhousesmentioning

confidence: 99%

Building-integrated rooftop greenhouses: An energy and environmental assessment in the mediterranean context

et al. 2017

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A sustainable and secure food supply within a low-carbon and resilient infrastructure is encapsulated in several of The United Nations' 17 sustainable development goals. The integration of urban agriculture in buildings can offer improved efficiencies; in recognition of this, the first south European example of a fully integrated rooftop greenhouse (iRTG) was designed and incorporated into the ICTA-ICP building by the Autonomous University of Barcelona. This design seeks to interchange heat, CO2 and rainwater between the building and its rooftop greenhouse. Average air temperatures for 2015 in the iRTG were 16.5°C (winter) and 25.79°C (summer), making the iRTG an ideal growing environment. Using detailed thermophysical fabric properties, 2015 site-specific weather data, exact control strategies and dynamic soil temperatures, the iRTG was modelled in EnergyPlus to assess the performance of an equivalent 'freestanding' greenhouse. The validated result shows that the thermal interchange between the iRTG and the ICTA-ICP building has considerable moderating effects on the iRTG's indoor climate; since average hourly temperatures in an equivalent freestanding greenhouse would have been 4.1°C colder in winter and 4.4°C warmer in summer under the 2015 climatic conditions. The simulation results demonstrate that the iRTG case study recycled 43.78 MWh of thermal energy (or 341.93 kWh/m 2 /yr) from the main building in 2015. Assuming 100% energy conversion efficiency, compared to freestanding greenhouses heated with oil, gas or biomass systems, the iRTG delivered an equivalent carbon savings of 113.8, 82.4 or 5.5 kg.CO2(eq)/m 2 /yr, respectively, and economic savings of 19.63,15.88 or 17.33 €/m 2 /yr, respectively. Under 1 similar climatic conditions, this symbiosis between buildings and urban agriculture makes an iRTG an efficient resource-management model and supports the promotion of a new typology or concept of buildings with a nexus or symbiosis between energy efficiency and food production.

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Section: Conventional Greenhousesmentioning

confidence: 99%

Building-integrated rooftop greenhouses: An energy and environmental assessment in the mediterranean context

et al. 2017

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“…On the contrary, to date, the number of research works related to the structural calculation of greenhouses is more limited. There are some studies based on the structural analysis of greenhouses [22,24,[33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], whereas, to the best of the authors' knowledge, only one paper focused on the analysis of foundations in greenhouses [50].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the aforementioned researchers have shown their concerns about the widespread greenhouse structure construction practice based on pre-engineered solutions without involving a specific technical project [22,38,42,45,46,51,52]. Similarly, Ha et al [39] also reported that greenhouses foundations are regularly empirically calculated regardless of the specific soil mechanics.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Multi-Span Greenhouse Structures

et al. 2020

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Greenhouses had to be designed to sustain permanent maintenance and crop loads as well as the site-specific climatic conditions, with wind being the most damaging. However, both the structure and foundation are regularly empirically calculated, which could lead to structural inadequacies or cost ineffectiveness. Thus, in this paper, the structural assessment of a multi-tunnel greenhouse was carried out. Firstly, wind loads were assessed through computational fluid dynamics (CFD). Then, the buckling failure mode when either the European Standard (EN) or the CFD wind loads were contemplated was assessed by a finite element method (FEM). Conversely to the EN 13031-1, CFD wind loads generated a suction in the 0–55° region of the first tunnel and a 60% reduction of the external pressure coefficients in the third tunnel was not detected. Moreover, the first-order buckling eigenvalues were reduced (32–57%), which resulted in the need for a different calculation method (i.e., elastoplastic analysis), and global buckling modes similar to local buckling shape were detected. Finally, the foundation was studied by the FEM and a matrix method based on the Wrinkler model. The stresses and deformations arising from the proposed matrix method were conservative compared to those obtained by the FEM.

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“…The structural systems and members of greenhouses are quite different from those of ordinary buildings. Kendirli [25] investigated a method of structural analysis for greenhouses commonly used in Turkey. Iribarne et al [26] developed a computer model for designing multi-span greenhouses using an object-oriented technique.…”

Section: Introductionmentioning

confidence: 99%

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2020

JCEA

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Structural analysis of greenhouses: A case study in Turkey

Cited by 26 publications

References 2 publications

Building-integrated rooftop greenhouses: An energy and environmental assessment in the mediterranean context

Building-integrated rooftop greenhouses: An energy and environmental assessment in the mediterranean context

Numerical Simulation of Multi-Span Greenhouse Structures

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