Modeling of greenhouse radiant heating

Pavlov, Mikhail; Лукин, С. В.; Derevianko, Oleg

doi:10.1051/matecconf/201819303006

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…The steam system is usually located near the greenhouse roof to decrease condensation; while the radiant heater releases heat to the floor level towards the surrounding air. Finally, infrared radiant heater consists of low intensity infrared radiators [32]. The passive system is independent of artificial fuels, but based on solar energy [33].…”

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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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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“…In all studies, the events block implements a mechanism for automatically maintaining the air temperature and the soil layer in a given range. Also, all studies take into account the influence of solar radiation, which is an important source of heat in the system [1].…”

Section: Inletmentioning

confidence: 99%

Simulation of thermal processes in greenhouse

Oskin

Tsokur

Voloshin

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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Maintaining a greenhouse efficiency throughout the year is an important task for greenhouse economy. One of the main problems in this area is the maintenance of optimal growing and fruiting conditions of crops, in particular, the maintenance of optimal temperatures, regardless of external conditions. The distribution of temperatures inside a greenhouse depends on many factors, including: a design of a greenhouse, its geographical location, a type and capacity of equipment used for heating, its placement inside greenhouses. The presence of a wide range of factors complicates the accurate thermal calculation of a greenhouse and opens up opportunities for computer modelling of thermal processes using modern physical modelling devices. The purpose of modelling thermal processes occurring in a greenhouse is to identify advantages and disadvantages of selected methods of heating a greenhouse in winter, as well as to obtain a model, changing input parameters of which will show the distribution of temperature fields inside a greenhouse. To maintain the temperature in the greenhouse in winter, cable heating systems, air heaters, heat generators, and infrared panels are used. The cable heating system and air heaters were selected for comparative analysis in the framework of this study. The design of the greenhouse and its shape were chosen in accordance with the models of greenhouses used today. Using the Comsol package blocks "Heat Transfer", "Laminar Flow", "Surface-to-Surface Radiation", a wide set of thermal processes was described, the necessary parameters of which were interconnected using "Multiphysics" interface. With the help of "Events" block, a mechanism of maintaining the set temperature was implemented. The main physical and geometric parameters of the objects under study were also introduced. The analysis was carried out for a dynamic mode of the system. As a result of the simulation, thermal fields and air flow directions were obtained for each time interval of the model under study. Based on the data obtained, the analysis was carried out, and graphs of temperature changes for selected objects were constructed. Conclusions are drawn about the influence of a number of factors on energy efficiency of a greenhouse and considered methods of heating. Ways to optimize the operation of greenhouse heating are proposed. The resulting model can be used for further research of unaffected methods of heating and increasing energy efficiency of a greenhouse.

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“…In [4] the authors propose a method of heating plants in hydroponic installations of the greenhouse, which includes heating trays and useful volume of a greenhouse, and the trays are heated with a hydroponic solution. Aminov and Astafurova proposed a method of greenhouse air heating [5]. Also there exist a heating system which is a system of irradiation of plants with radiation sources, heat exchange circuits and pipelines [6].…”

Section: Introductionmentioning

confidence: 99%

Assessment of heat pump efficiency for microclimate formation in a greenhouse

Tretyakova

2018

MATEC Web Conf.

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The article provides information about the ring heating system comprising heat pumps. The system is designed as a closed loop, which includes a pump, a thermal energy battery, and a heat pump. The evaporator is connected to the system of water intake from the well and the cooling system of air inside the greenhouse. The resulting thermal energy is consumed for the needs of heating and watering the greenhouse complex. We present a method for determining the dependence of the net present value on the temperatures in supply and return pipelines and temperature of low-potential heat source. The main economic indicators of the implementation of this system on a typical block greenhouse in the city of Tyumen are determined.

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Modeling of greenhouse radiant heating

Cited by 9 publications

References 18 publications

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

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

Simulation of thermal processes in greenhouse

Assessment of heat pump efficiency for microclimate formation in a greenhouse

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