Optimal utilization of energy equipment in a semi-closed greenhouse

Beveren, P.J.M. van; Bontsema, J.; Ooster, A. van ’t; Straten, G. van; Henten, E.J. van

doi:10.1016/j.compag.2020.105800

Cited by 15 publications

(15 citation statements)

References 28 publications

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“…In addition, the implementation of energy supply optimization strategies is another aspect of efficiently improving the water, energy, and food security in greenhouses. The optimization strategies have varied from feedback conventional controllers to advanced ones based on artificial intelligence such as: fuzzy logic controllers (Su et al 2017), hybrid particle swarm optimization and genetic algorithms (Chen et al 2015), model predictive controllers (Ouammi et al 2020a, b;Lin et al 2020) and optimal controllers (Beveren et al 2015, Beveren et al 2020Singh et al 2015). Their common goal is to maximize production yield by tracking the desired trajectories of the controlled variables while minimizing the use of available water and energy resources.…”

Section: Energy Considerations In Smart Greenhousesmentioning

confidence: 99%

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

Karanisa

Achour²,

Ouammi

et al. 2022

Environ Syst Decis

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Greenhouse farming is essential in increasing domestic crop production in countries with limited resources and a harsh climate like Qatar. Smart greenhouse development is even more important to overcome these limitations and achieve high levels of food security. While the main aim of greenhouses is to offer an appropriate environment for high-yield production while protecting crops from adverse climate conditions, smart greenhouses provide precise regulation and control of the microclimate variables by utilizing the latest control techniques, advanced metering and communication infrastructures, and smart management systems thus providing the optimal environment for crop development. However, due to the development of information technology, greenhouses are undergoing a big transformation. In fact, the new generation of greenhouses has gone from simple constructions to sophisticated factories that drive agricultural production at the minimum possible cost. The main objective of this paper is to present a comprehensive understanding framework of the actual greenhouse development in Qatar, so as to be able to support the transition to sustainable precision agriculture. Qatar’s greenhouse market is a dynamic sector, and it is expected to mark double-digit growth by 2025. Thus, this study may offer effective supporting information to decision and policy makers, professionals, and end-users in introducing new technologies and taking advantage of monitoring techniques, artificial intelligence, and communication infrastructure in the agriculture sector by adopting smart greenhouses, consequently enhancing the Food-Energy-Water Nexus resilience and sustainable development. Furthermore, an analysis of the actual agriculture situation in Qatar is provided by examining its potential development regarding the existing drivers and barriers. Finally, the study presents the policy measures already implemented in Qatar and analyses the future development of the local greenhouse sector in terms of sustainability and resource-saving perspective and its penetration into Qatar’s economy.

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Section: Energy Considerations In Smart Greenhousesmentioning

confidence: 99%

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

Karanisa

Achour²,

Ouammi

et al. 2022

Environ Syst Decis

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“…Raaphorst et al (2019), and assume that heating comes from natural gas burned in a boiler with 100% efficiency, and lighting comes from electricity bought from the national grid. Boiler efficiency in practice is around 94% (Van Beveren et al, 2020 This example demonstrates that considering the benefits of LEDs strictly from an energy perspective does not tell the full story. However, it should be noted that this example is a simplification: in practice, most illuminated greenhouses in the Netherlands use CHPs, which means that heating originates from natural gas, while lighting comes both from natural gas burned by the CHP and from the electricity grid.…”

Section: Energy Use Financial Costs and Carbon Footprintmentioning

confidence: 96%

“…Equipment and technology for reduced energy use includes insulating thermal screens (Dieleman & Kempkes, 2006), mechanical dehumidification and heat exchangers (Kempkes et al, 2017), and heat storage systems which create a so-called closed or semi-closed greenhouse. These systems include short term heat storage buffers that extract energy during the day and release it at night (Seginer et al, 2017;Van Beveren et al, 2020), or long term underground heat storage to extract energy in summer and release it in winter (De Zwart, 2012;Van Ooteghem, 2007).…”

Section: High-tech Greenhouses and The Greenhouse Energy Problemmentioning

confidence: 99%

“…Such a system, also known as a semi-closed greenhouse (De Zwart, 2012) includes mechanical cooling and dehumidifying of the air, a heat pump, and energy storage buffers. These systems are available for greenhouses, although they are not yet common (Van Beveren et al, 2020). In this chapter, we assumed that energy is stored in above-ground water tanks as in Righini et al (2020), and not in underground aquifers as in, e.g., De Zwart (2012).…”

Section: Approach and Demarcationmentioning

confidence: 99%

“…This comparison has some important implications: first, it suggests that installing a heat harvesting system is almost as effective as transitioning to LEDs, in terms of the gains in energy savings. However, the concept of heat harvesting, resulting in the so-called closed or semi-closed greenhouse, has been around for nearly two decades (De Zwart, 2012), and has still not been widely adopted (Van Beveren et al, 2020). Investment and maintenance costs have been cited as a main barrier for adoption of heat harvesting systems (De Zwart, 2012).…”

Section: Integration Of Chapters 4 Andmentioning

confidence: 99%

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Energy saving by LED lighting in greenhouses : A process-based modelling approach

Katzin¹

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Chapter 2 investigates the discipline of process-based greenhouse modelling. The chapter shows that a considerable number of greenhouse models are being published, and sets out to understand the reasons for the existence of this multitude of models. In Section 2.2, substantial background on the concept of process-based greenhouse modelling is provided, and a general structure of these models is proposed. Subsequently, modelling studies published between 2018 and 2020 are analyzed according to this general structure. The studies are categorized according to their objectives, types of greenhouse they describe, and equipment they consider, and a model inheritance chart is presented, showing how current models are based on earlier works. Moreover, a comparison of modelling validation studies is performed. Based on this analysis, possible reasons for the abundance of greenhouse models are suggested, including a lack of model transparency and code availability, and a belief that model development is in itself a valuable research goal. The chapter ends with several recommendations for the future advancement of the discipline. These include promoting model transparency and availability of source code, and establishing shared datasets and evaluation benchmarks.Chapter 3 presents GreenLight, a process-based model for a greenhouse with a tomato crop, which describes the influence of HPS lamps and LEDs on the climate, crop, and energy use. In this chapter, GreenLight's performance is evaluated by comparing model predictions against data from two greenhouse compartments, one with HPS lamps and one with LEDs. The model is found to have a relative error in predictions of climate and energy use in the range of 1-12%. In order to promote transparency, the model is offered in an open source format at https://github.com/davkat1/GreenLight. In this way, the model is made available for inspection and extension by others.Chapter 4 uses GreenLight to predict the influence of replacing HPS lamps by LEDs in a greenhouse. A wide range of scenarios is considered, including varying climates, from subtropical China to arctic Sweden, and multiple settings for indoor temperature, lamp intensity, lighting duration, and insulation. In all scenarios, LEDs are found to reduce the energy demand for lighting by 40%, but to increase the demand for heating. This results in the total energy saving by transition to LEDs to be in the range of 10-25% for the majority of scenarios considered. An important factor influencing how much energy can be saved by a transition to LEDs is found to be the ratio between the lighting and heating demand of the greenhouse before the transition. Summary xiiiChapter 5 presents a novel concept for greenhouse climate control: heating a greenhouse by light. Considering the observation that all lamps provide heat as well as light, this chapter suggests that illuminating at high light intensities could eliminate the need to heat the greenhouse by the heating system. This approach could potentially be very efficient, as it utili...

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A vision of precision agriculture: Balance between agricultural sustainability and environmental stewardship

Nath¹

2023

Agronomy Journal

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Precision agriculture (PA) has become an increasingly popular approach to sustainable intensification in agriculture, with the intent of a balance between agricultural productivity and environmental stewardship. Sustainable intensification aims to increase agricultural productivity while minimizing negative environmental impacts. To assist this, PA has been enabled through the use of advanced technologies such as the Internet of Things, global positioning system, geographic information systems, sensors, drones, and machine learning. These technologies have enabled farmers to practice more efficient and precise farming techniques. This review provides a vision of sustainable intensification and explores the potential of PA to contribute to this goal. This review emphasizes various PA practices, such as precise irrigation and fertilizer management, accurate pest and disease management, and precise livestock farming. PA is also explored for its role in addressing climate change through mitigation and adaptation, while proactively addressing the barriers and challenges that may arise in implementing sustainable PA. Therefore, the future of sustainable precision agriculture lies in technological innovation, sustainable farming practices, data analytics, and policy interventions.

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Optimal utilization of energy equipment in a semi-closed greenhouse

Cited by 15 publications

References 28 publications

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

Energy saving by LED lighting in greenhouses : A process-based modelling approach

A vision of precision agriculture: Balance between agricultural sustainability and environmental stewardship

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