Comparison of three evapotranspiration models for a greenhouse cooling strategy with natural ventilation and variable high pressure fogging

Villarreal‐Guerrero, Federico; Kaçıra, Murat; Fitz-Rodríguez, E.; Kubota, Chieri; Giacomelli, G. A.; Linker, Raphael; Arbel, A.

doi:10.1016/j.scienta.2011.10.016

Cited by 66 publications

(47 citation statements)

References 22 publications

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“…The data were collected every 5 s and the 15-min averages were calculated and recorded by a CR 1000 data logger (Campbell Scientific, Logan, UT). Villarreal-Guerrero et al (2012) reported that the difference of the daily transpiration rate was <5% between the data measured from the sap flow meters and from lysimeters, and the accuracy of the sap flow meters was found to be satisfactory. Thus the averages of four readings from those randomly chosen plants were used to validate the daily transpiration values predicted by the SIMDualKc model.…”

Section: Experimental Site Methodsmentioning

confidence: 98%

Assessing the SIMDualKc model for estimating evapotranspiration of hot pepper grown in a solar greenhouse in Northwest China

Qiu

Kang

et al. 2015

Agricultural Systems

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Section: Experimental Site Methodsmentioning

confidence: 98%

Assessing the SIMDualKc model for estimating evapotranspiration of hot pepper grown in a solar greenhouse in Northwest China

Qiu

Kang

et al. 2015

Agricultural Systems

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“…(1)) has been proposed and verified (Takakura et al, 2009;Villarreal-Guerrero et al, 2012). It is used here to calculate evapotranspiration.…”

Section: Calculation Of Net Photosynthesis Of the Canopymentioning

confidence: 99%

In Site Net Photosynthesis Measurement of a Plant Canopy in a Single-Span Greenhouse

Takakura

Sunagawa

Tamaki

et al. 2017

JAA

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Using newly developed sensor units that were more compact and accurate than earlier units (Takakura et al., 2009), this study was conducted to estimate the net photosynthesis of a plant canopy in a practical greenhouse during plant cultivation. Net photosynthesis and the ventilation flow rate are two unknowns in this greenhouse system, with adequate growth of bitter gourd plants. Environmental conditions related to evapotranspiration from the canopy and CO2 flux from the soil surface were measured respectively using the developed sensor units and a box-type CO2 concentration sensor. Heat flux from the soil was also measured. Two equations were solved: one for CO2 balance and one for water vapor balance. On-line monitoring of net photosynthesis is possible using simple and inexpensive sensors, but the obtained data of the canopy photosynthesis were scattered because of frequent changes in the ventilation amount. Furthermore, improved sensor units revealed that the evapotranspiration of the canopy was linearly related to net solar radiation in the greenhouse.

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“…In the case of neglecting the soil transpiration, the change rate of inside water vapor density produced by crop transpiration is described as follows [14,15]:…”

Section: Modeling Of Inside Air Humiditymentioning

confidence: 99%

Dynamic Mechanistic Modeling of Air Temperature and Humidity in the Greenhouses with on-off Actuators

Xu¹,

Chen²,

Zhang³

et al. 2016

TELKOMNIKA

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IntroductionMany modern greenhouses have been imported in China as show-cases of modern agriculture from Western European countries in the past 30 years. However, few of such showcase greenhouses have been economically successful in China. These greenhouses consume too much energy. One major cause for the discrepancy in performance of these production systems in Europe and in China is the significant climatic differences between China (particularly in the subtropical regions) and the countries where the systems were developed [1]. Therefore, it's necessary to develop suitable control strategies for the greenhouses in China. However, it's inappropriate to test new control methods in an actual greenhouse directly, because it's laborious and costly, and it even causes damage to the actuators and crops. It's better to test new control methods in simulation at first, which is convenient and safe. The premise is that the mechanistic models of greenhouse microclimate must be built in advance. The purpose of this paper was to develop suitable mechanistic models of greenhouse air temperature and humidity, according to the characteristics of actuators in most greenhouses in China.The mechanistic model of greenhouse microclimate is a group of dynamic energy and mass balance equations, the function of which is to simulate the dynamic behaviors of greenhouse microclimate. Many mechanistic models have been developed, such as GDGCM model [2,3] There are also some mechanistic models which just describe the dynamic behaviors of greenhouse microclimate under a particular operating state, for example, Teitel and Tann studied the transient response of the greenhouse air temperature and humidity under the

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Comparison of three evapotranspiration models for a greenhouse cooling strategy with natural ventilation and variable high pressure fogging

Cited by 66 publications

References 22 publications

Assessing the SIMDualKc model for estimating evapotranspiration of hot pepper grown in a solar greenhouse in Northwest China

Assessing the SIMDualKc model for estimating evapotranspiration of hot pepper grown in a solar greenhouse in Northwest China

In Site Net Photosynthesis Measurement of a Plant Canopy in a Single-Span Greenhouse

Dynamic Mechanistic Modeling of Air Temperature and Humidity in the Greenhouses with on-off Actuators

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