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首页> 外文期刊>Acta Horticulturae >Numerical simulation of the effect of different mulches on the heat storage capacity of a Mediterranean greenhouse soil
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Numerical simulation of the effect of different mulches on the heat storage capacity of a Mediterranean greenhouse soil

机译：不同覆盖物对地中海温室土壤蓄热能力影响的数值模拟

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摘要

In the Mediterranean greenhouse areas, a large majority of growers rely on passive techniques to improve the microclimate of the greenhouse during the winter period, rather than using more expensive systems such as active heating. Some of these techniques such as different types of mulch (sand, plastic films, etc.) are used to improve the heat storage capacity of the greenhouse soil. A proper modeling of the role of the greenhouse soil a heat store would allow the verification of which techniques have a larger positive effect on the heat store capacity of the soil (i.e. type, color and thickness of the mulch, soil moisture content, etc.) and how to optimize their management by the grower. In recent years, CFD has been successfully used to model thegreenhouse microclimate under very different scenarios, but little has been done to include in the simulations the role of passive techniques in the winter period microclimate, such as the role of the soil as a heat store. In the present work, a CFD model of a Mediterranean greenhouse and its soil has been developed, and the effect on the heat storage capacity of the soil as well as in the ambient of 2 different types of mulch (black plastic film, semi-transparent plastic film) was evaluated, by comparing the temperature measured at 4 different depths and ambient temperature (at two heights), during daytime period with the values provided by the model. The evolution of the temperatures at different soil depths followed the same pattern in both the experiments and the simulations. Good quantitative agreement was found between values predicted by the model and the measurements with differences being always lower than 2°C.
机译：在地中海温室地区，大多数种植者依靠被动技术来改善冬季期间温室的微气候，而不是使用更昂贵的系统，如主动加热。这些技术中的一些诸如不同类型的覆盖物（砂，塑料薄膜等）来改善温室土壤的储热容量。适当的模型，温室土壤的作用散热器将允许验证哪种技术对土壤的热储存能力具有更大的积极作用（即覆盖物的型，颜色和覆盖物，土壤含量等等。 ）如何通过种植者优化他们的管理。近年来，CFD已成功地习惯于在非常不同的场景下模拟绿色小微锁，但是已经在模拟中包括在冬季时期微气密中的被动技术的作用，例如土壤作为热销的作用。在目前的工作中，已经开发了地中海温室及其土壤的CFD模型，以及对土壤储热容量的影响以及2种不同类型的覆盖物的环境（黑色塑料薄膜，半透明通过将在4种不同的深度和环境温度（在两个高度处）的温度与模型提供的值进行比较，评价塑料膜）通过比较。不同土壤深度的温度的演变在实验和模拟中遵循相同的模式。在模型预测的值和差异总是低于2°C的测量之间发现了良好的量化协议。

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  • 来源
    《Acta Horticulturae》 |2017年第1期|共9页
  • 作者

    E.J. Baeza; A. Sapounas; C. Stanghellini; S. Bonachela; J. Hernandez; J.I. Montero; J.C. Lopez; M.R. Granados; P. Munoz; P. Lorenzo;

  • 作者单位

    Wageningen UR Greenhouse Horticulture Droevendaalsesteeg 1 6708 PB Wageningen The Netherlands;

    Wageningen UR Greenhouse Horticulture Droevendaalsesteeg 1 6708 PB Wageningen The Netherlands;

    Wageningen UR Greenhouse Horticulture Droevendaalsesteeg 1 6708 PB Wageningen The Netherlands;

    Departamento de Production Vegetal Universidad de Almeria La Canada de San Urbano s/n 04120 Almeria Spain;

    Departamento de Production Vegetal Universidad de Almeria La Canada de San Urbano s/n 04120 Almeria Spain;

    Institut de Recerca i Tecnologia Agroalimentaries 08348 Cabrils (Barcelona) Spain;

    Experimental Station of Cajamar 'Palmerillas' (Cajamar Foundation] 04710 El Ejido Almeria Spain;

    Departamento de Production Vegetal Universidad de Almeria La Canada de San Urbano s/n 04120 Almeria Spain;

    Institut de Recerca i Tecnologia Agroalimentaries 08348 Cabrils (Barcelona) Spain;

    Andalusian Institute of Agricultural and Fisheries Research and Training (IFAPA) Camino San Nicolas 1 04745 La Mojonera Almeria Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 园艺;
  • 关键词

    temperature; sand; black film; CFD; semi-transparent film;

    机译：温度;沙子;黑色薄膜;CFD;半透明电影;

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