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Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions

Received: 3 July 2019     Accepted: 5 August 2019     Published: 20 August 2019
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Abstract

In periods when greenhouses need heating, heating costs can be reduced if the interior of the greenhouse receives a greater amount of sunlight. For this, the greenhouse surface slope angles need to be increase in such a way that the rays of the sun fall perpendicular to the greenhouse surface in the winter months when they are at a lower angle to the surface of the Earth. In this study, an investigation was made of greenhouse surface geometry which would allow a high level of sunlight penetration in winter conditions in the provinces of Antalya and Muğla, where greenhouse agriculture is widely practiced. The Venlo type glass greenhouse with vertical side surfaces, which is extensively used in the study area, was taken as a reference. Two different models of glass greenhouse were designed with a geometry which would increase the light penetrability of the side wall surfaces, taking account of the global radiation and the hours of sunlight for a six-month period (October to March) in each of the provinces. The geometry of the model greenhouses and the reference greenhouses was compared in terms of mean penetrability to sunlight and the energy values of the sunlight passing through. It was determined that the sunlight penetrability values of the model greenhouses were 7.86% higher than those of the reference greenhouse in Antalya province and 7.36% higher in Muğla province. These results show that the geometry of both model greenhouses was able to benefit at a higher level from the sun’s rays than fixed surface greenhouses. Greenhouses constructed according to the planned geometry will help to reduce the winter heating costs of greenhouse agriculture in mild climates similar to the study area, and help to enable greenhouse production in cooler climates. It is thought that in this way, greenhouse crop production will be possible over a wider area and throughout a longer period of the year.

Published in American Journal of Agriculture and Forestry (Volume 7, Issue 4)
DOI 10.11648/j.ajaf.20190704.15
Page(s) 152-161
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Greenhouse Surface, Winter Cultivation, Solar Energy, Solar Light Transmittance

References
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[4] Beckman W. A. and Duffie John A., Solar engineering of thermal processes, (2nd ed.), 1991, 910 p.
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[19] Yağcıoğlu A., Demir V. and Günhan T., Determination of the main greenhouse shapes and sizes to ensure maximum penetration of photosynthetically active radiation in various regions of Turkey, Ege University Research Funda, 1998, Project No: 96-ZRF-045.
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  • APA Style

    Kivanc Topcuoglu, Halil Baki Unal. (2019). Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions. American Journal of Agriculture and Forestry, 7(4), 152-161. https://doi.org/10.11648/j.ajaf.20190704.15

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    ACS Style

    Kivanc Topcuoglu; Halil Baki Unal. Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions. Am. J. Agric. For. 2019, 7(4), 152-161. doi: 10.11648/j.ajaf.20190704.15

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    AMA Style

    Kivanc Topcuoglu, Halil Baki Unal. Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions. Am J Agric For. 2019;7(4):152-161. doi: 10.11648/j.ajaf.20190704.15

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  • @article{10.11648/j.ajaf.20190704.15,
      author = {Kivanc Topcuoglu and Halil Baki Unal},
      title = {Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions},
      journal = {American Journal of Agriculture and Forestry},
      volume = {7},
      number = {4},
      pages = {152-161},
      doi = {10.11648/j.ajaf.20190704.15},
      url = {https://doi.org/10.11648/j.ajaf.20190704.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20190704.15},
      abstract = {In periods when greenhouses need heating, heating costs can be reduced if the interior of the greenhouse receives a greater amount of sunlight. For this, the greenhouse surface slope angles need to be increase in such a way that the rays of the sun fall perpendicular to the greenhouse surface in the winter months when they are at a lower angle to the surface of the Earth. In this study, an investigation was made of greenhouse surface geometry which would allow a high level of sunlight penetration in winter conditions in the provinces of Antalya and Muğla, where greenhouse agriculture is widely practiced. The Venlo type glass greenhouse with vertical side surfaces, which is extensively used in the study area, was taken as a reference. Two different models of glass greenhouse were designed with a geometry which would increase the light penetrability of the side wall surfaces, taking account of the global radiation and the hours of sunlight for a six-month period (October to March) in each of the provinces. The geometry of the model greenhouses and the reference greenhouses was compared in terms of mean penetrability to sunlight and the energy values of the sunlight passing through. It was determined that the sunlight penetrability values of the model greenhouses were 7.86% higher than those of the reference greenhouse in Antalya province and 7.36% higher in Muğla province. These results show that the geometry of both model greenhouses was able to benefit at a higher level from the sun’s rays than fixed surface greenhouses. Greenhouses constructed according to the planned geometry will help to reduce the winter heating costs of greenhouse agriculture in mild climates similar to the study area, and help to enable greenhouse production in cooler climates. It is thought that in this way, greenhouse crop production will be possible over a wider area and throughout a longer period of the year.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Design of Greenhouses with High Light Transmittance: An Implementation in Two Different Conditions
    AU  - Kivanc Topcuoglu
    AU  - Halil Baki Unal
    Y1  - 2019/08/20
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ajaf.20190704.15
    DO  - 10.11648/j.ajaf.20190704.15
    T2  - American Journal of Agriculture and Forestry
    JF  - American Journal of Agriculture and Forestry
    JO  - American Journal of Agriculture and Forestry
    SP  - 152
    EP  - 161
    PB  - Science Publishing Group
    SN  - 2330-8591
    UR  - https://doi.org/10.11648/j.ajaf.20190704.15
    AB  - In periods when greenhouses need heating, heating costs can be reduced if the interior of the greenhouse receives a greater amount of sunlight. For this, the greenhouse surface slope angles need to be increase in such a way that the rays of the sun fall perpendicular to the greenhouse surface in the winter months when they are at a lower angle to the surface of the Earth. In this study, an investigation was made of greenhouse surface geometry which would allow a high level of sunlight penetration in winter conditions in the provinces of Antalya and Muğla, where greenhouse agriculture is widely practiced. The Venlo type glass greenhouse with vertical side surfaces, which is extensively used in the study area, was taken as a reference. Two different models of glass greenhouse were designed with a geometry which would increase the light penetrability of the side wall surfaces, taking account of the global radiation and the hours of sunlight for a six-month period (October to March) in each of the provinces. The geometry of the model greenhouses and the reference greenhouses was compared in terms of mean penetrability to sunlight and the energy values of the sunlight passing through. It was determined that the sunlight penetrability values of the model greenhouses were 7.86% higher than those of the reference greenhouse in Antalya province and 7.36% higher in Muğla province. These results show that the geometry of both model greenhouses was able to benefit at a higher level from the sun’s rays than fixed surface greenhouses. Greenhouses constructed according to the planned geometry will help to reduce the winter heating costs of greenhouse agriculture in mild climates similar to the study area, and help to enable greenhouse production in cooler climates. It is thought that in this way, greenhouse crop production will be possible over a wider area and throughout a longer period of the year.
    VL  - 7
    IS  - 4
    ER  - 

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Author Information
  • Department of Construction, Mugla Vocational School Mugla Sitki Kocman University, Mugla, Turkey

  • Department of Agricultural Structures and Irrigation, Faculty of Agriculture, Ege University, Izmir, Turkey

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