Innovations in greenhouse systems – energy conservation by system design, sensors and decision support systems

Hemming, S.; Balendonck, J.; Dieleman, J.A.; Gelder, A. de; Kempkes, F.L.K.; Swinkels, G.L.A.M.; Visser, P.H.B. de; Zwart, H.F. de

doi:10.17660/actahortic.2017.1170.1

Cited by 26 publications

(14 citation statements)

References 55 publications

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“…In the lateral direction 256 uniform grids are generated. Calculations are performed for Rayleigh number is 4×10 9 , the temperature of the bottom wall is 333K, and the temperature of the top wall is 294K. The grid independence tests show that the given mesh resolutions are adequate.…”

Section: Natural Convection Within a Hotbox Of A 1:1 Aspect Ratiomentioning

confidence: 99%

“…Reference source not found.). In general, the energy-saving properties of thermal screens are related to buoyancy, diffusion and convection heat transfer, air permeability, and humidity transfer [9][10][11]. However, mechanical dehumidification systems help to prevent condensation due to excess humidity and therefore eliminate the need for air permeability and extensive ventilation [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Turbulent Flow inside a Cubical Cavity with Heat Transfer from the Top

Haslavsky¹,

Vitoshkin²

2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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Section: Natural Convection Within a Hotbox Of A 1:1 Aspect Ratiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Turbulent Flow inside a Cubical Cavity with Heat Transfer from the Top

Haslavsky¹,

Vitoshkin²

2020

Proceedings of the 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20)

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“…Energy costs to heat a greenhouse represent a significant expense: in cold regions they represent the second-largest cost item after the workforce [2]. According to Campiotti [1], the greenhouse equipment (light-supplementation, dehumidification, heating, cooling and actuators) needed to achieve maximum yields may result in energy costs in the order of 30%-40% of total production costs.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Compressor Heat Pump for Root Zone Heating as an Alternative Heating Source for Leafy Vegetable Cultivation

Terrosi¹,

Cacini²,

Burchi³

et al. 2020

Energies

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Protected horticulture is a high energy-consuming sector in which the optimization of energy use and cost for heating facilities is strategic in achieving high environmental and economic sustainability of production. The main aim of the project was to evaluate the use of a heat pump for basal heating as an alternative technology to grow crops with reduced canopies, such as basil. During the test, an area of the greenhouse contained two systems of coaxial pipes circulating warm water from a heat pump and a condensing boiler. These pipes were placed above the growing media. At the same time, a separate area of the same greenhouse contained a traditional heating system consisting of an air heater, the solution commonly used to heat greenhouses. Microclimatic conditions and energy consumption were analyzed for the three heating technologies. The energy analysis of the three experimental heating options showed that all of them could ensure suitable thermal conditions for cultivation in the winter period. Overall, the results confirmed the energy saving resulting from the adoption of the heat pump, underlining the importance of this device in terms of the support that the energy-saving goal receives.

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“…Another part of the energy consumption is for driving the actuators. The basic energy consumption could account for more than 90% of the total energy consumption in the greenhouse [1]. In order to improve the management level of the greenhouse, it is of great importance to study the prediction of greenhouse energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Energy Consumption Prediction of a Greenhouse and Optimization of Daily Average Temperature

Shen

Wei

2018

Energies

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Greenhouses are high energy-consuming and anti-seasonal production facilities. In some cases, energy consumption in greenhouses accounts for 50% of the cost of greenhouse production. The high energy consumption has become a major factor hindering the development of greenhouses. In order to improve the energy efficiency of the greenhouse, it is important to predict its energy consumption. In this study, the energy consumption mathematical model of a Venlo greenhouse is established based on the principle of energy conservation. Three optimization algorithms are used to identify the parameters which are difficult to determine in the energy consumption model. In order to examine the accuracy of the model, some verifications are made. The goal of achieving high yield, high quality and high efficiency production is a problem in the study of greenhouse environment control. Combining the prediction model of greenhouse energy consumption with the relatively accurate weather forecast data for the next week, the energy consumption of greenhouse under different weather conditions is predicted. Taking the minimum energy consumption as the objective function, the indoor daily average temperatures of 7 days are optimized to provide the theoretical reference for the decision-making of heating in the greenhouse. The results show that the optimized average daily temperatures save 9% of the energy cost during a cold wave.

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Innovations in greenhouse systems – energy conservation by system design, sensors and decision support systems

Cited by 26 publications

References 55 publications

Numerical Investigation of Turbulent Flow inside a Cubical Cavity with Heat Transfer from the Top

Numerical Investigation of Turbulent Flow inside a Cubical Cavity with Heat Transfer from the Top

Evaluation of Compressor Heat Pump for Root Zone Heating as an Alternative Heating Source for Leafy Vegetable Cultivation

Energy Consumption Prediction of a Greenhouse and Optimization of Daily Average Temperature

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