Dynamic energy balance model of a glass greenhouse: An experimental validation and solar energy analysis

Zhang, Guanshan; Ding, Xiaoming; Li, Tianhua; Pu, Wenyang; Wei, Lou; Hou, Jialin

doi:10.1016/j.energy.2020.117281

Cited by 37 publications

(15 citation statements)

References 32 publications

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“…However, this has not been experimentally studied, due to the difficulty and cost of manufacturing and studying many different GHs. This is also the case with other GH dimensions that could affect the ventilation process and its energy requirements [19,101,102].…”

Section: Effect Of Greenhouse Dimensionsmentioning

confidence: 90%

Towards a Sustainable Greenhouse: Review of Trends and Emerging Practices in Analysing Greenhouse Ventilation Requirements to Sustain Maximum Agricultural Yield

et al. 2020

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Cultivation in open fields mainly depends on the location and time of farming, which itself highly depends on the quality and quantity of water for irrigation, weather conditions and soil characteristics. Water resources are highly dependent on the limited freshwater resources from the groundwater system, or rainwater. Countries in MENA (the Middle East and North Africa) rely mostly on desalination technologies for agriculture, due to water scarcity. Therefore, greenhouse (GH) agriculture can be developed to succeed in dealing with the water scarcity and provide sufficient sources of agricultural products as a sustainable solution. These indoor agriculture facilities, which are enclosed by transparent covers, can produce different sources of fruits and vegetables, using a controlled amount of water. By reducing the exchange rate of air with the outside environment, which is known as the confinement effects, greenhouses generate a suitable environment for the plants to grow under transparent covers to trap the sunlight. This raises the inside temperature above the maximum threshold levels, especially within the warm season, due to the high solar radiation intensity, having an adverse influence on the microclimate conditions and consequently the crop growth. In order to sustain maximum agricultural yield, greenhouse ventilation is an important parameter in which its trends and emerging practices were reviewed in this study.

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Section: Effect Of Greenhouse Dimensionsmentioning

confidence: 90%

Towards a Sustainable Greenhouse: Review of Trends and Emerging Practices in Analysing Greenhouse Ventilation Requirements to Sustain Maximum Agricultural Yield

et al. 2020

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“…In [21], the authors evaluated the effect of different shading types on solar and thermal radiation in a greenhouse. The main aim of the shading adoption is the possibility to reduce the quantity of solar energy that filters into the greenhouse during the summer months, thus reducing water consumption for crop irrigation [22,23]. Infrared filters realized by plastic or glass films have been successfully used to guarantee photosynthetically active radiation (PAR) transmission, at the same time preventing pests.…”

Section: Technologic Aspects Of Modern Greenhouses To Enhance Energy Managementmentioning

confidence: 99%

Model Predictive Control of Smart Greenhouses as the Path towards Near Zero Energy Consumption

et al. 2020

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Modern agriculture represents an economic sector that can mainly benefit from technology innovation according to the principles suggested by Industry 4.0 for smart farming systems. Greenhouse industry is significantly becoming more and more technological and automatized to improve the quality and efficiency of crop production. Smart greenhouses are equipped with forefront IoT- and ICT-based monitoring and control systems. New remote sensors, devices, networking communication, and control strategies can make available real-time information about crop health, soil, temperature, humidity, and other indoor parameters. Energy efficiency plays a key role in this context, as a fundamental path towards sustainability of the production. This paper is a review of the precision and sustainable agriculture approaches focusing on the current advance technological solution to monitor, track, and control greenhouse systems to enhance production in a more sustainable way. Thus, we compared and analyzed traditional versus model predictive control methods with the aim to enhance indoor microclimate condition management under an energy-saving approach. We also reviewed applications of sustainable approaches to reach nearly zero energy consumption, while achieving nearly zero water and pesticide use.

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“…However, there are some meaningful distinctions in energy consumption and payback period between the ideal closed and traditional greenhouse layout [13]. Zhang et al discussed a dynamic energy balance model considering dynamic cover absorbance and transmittance with an improved performance [14]. In this research use of a sub-model of seven-layer soil and the solar radiation transmitted into the greenhouse from side walls were studied.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive evaluation of a semi-solar greenhouse: energy, exergy and economic analyses with experimental validation

2021

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This study deals with dynamic modeling and analyzing of an innovative semi-solar greenhouse s tructure applying MATLAB software from the viewpoints of energy, exergy and economic. This Modeling is applied to predict the temperatures of four different points inside the semi-solar greenhouse, regarding the evapotranspiration of the crop. Measured data recorded from the constructed typical semi-solar greenhouse is used to evaluate the results of the proposed thermodynamic analysis. Measurements during the experiment show considerable temperature difference of 20 ℃ between the indoor and outdoor air. The mean values of 5.94% and 2.06℃ for (Mean Absolute Percentage Error) and (Root Mean Squared Error) indicates the accuracy of the thermal simulation. Furthermore, in different heat and mass transfer processes, the total exergy destruction values are analyzed. The target of this research is considered as providing suitable environmental conditions for the inside of the greenhouse. In this respect, the greenhouse air unit cost for each time step of one minute is inspected. By increasing the interest rate from 10% to 20% the greenhouse air unit cost raises almost twice. Decrease of about 45.36 % in total exergy destruction is obtained by the technique of applying double layer glass as the greenhouse cover.

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Dynamic energy balance model of a glass greenhouse: An experimental validation and solar energy analysis

Cited by 37 publications

References 32 publications

Towards a Sustainable Greenhouse: Review of Trends and Emerging Practices in Analysing Greenhouse Ventilation Requirements to Sustain Maximum Agricultural Yield

Towards a Sustainable Greenhouse: Review of Trends and Emerging Practices in Analysing Greenhouse Ventilation Requirements to Sustain Maximum Agricultural Yield

Model Predictive Control of Smart Greenhouses as the Path towards Near Zero Energy Consumption

Comprehensive evaluation of a semi-solar greenhouse: energy, exergy and economic analyses with experimental validation

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