Design for an improved temperature integration concept in greenhouse cultivation

Körner, Oliver; Challa, H.

doi:10.1016/s0168-1699(03)00006-1

Cited by 52 publications

(36 citation statements)

References 20 publications

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“…Comparable savings of 5-15% were found with simulations and experiments without affecting plant growth and production (e.g. Körner and Challa, 2003b;Dueck and Marcelis, 2005;Elings et al, 2005). In completely closed greenhouses this method is used to reduce the cooling power during daytime.…”

Section: Energy Efficient Operational Controlmentioning

confidence: 92%

Innovative Technologies for an Efficient Use of Energy

Bakker¹,

Adams²,

Boulard³

et al. 2008

Acta Hortic.

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Efficient use of energy in greenhouses has been subject of research and development for decades. The final energy efficiency, e.g. the amount of energy used per unit of product, is determined by improvements in energy conversion, reductions in energy use for environmental control and the efficiency of crop production. The new European targets on reduction of CO 2 emission have resulted in a renewed interest in innovative technologies to improve energy efficiency in greenhouses designed for North-as well as South European regions. In this paper an overview of the recent developments is presented from both the Northwest European as well as the Mediterranean perspective. The developments range from new modified covering materials, innovative and energy conservative climate control equipment and plant response based control systems, to integrated energy efficient greenhouse designs.

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Section: Energy Efficient Operational Controlmentioning

confidence: 92%

Innovative Technologies for an Efficient Use of Energy

Bakker¹,

Adams²,

Boulard³

et al. 2008

Acta Hortic.

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“…The energy savings depend on the crop and the magnitude of temperature fluctuations allowed. The range of energy savings with TI, according to experiments and simulations, is 5-15% (Buwalda et al 1999;Körner and Challa, 2003;Elings et al 2005), with few effects on production.…”

Section: A Double Luxous Screen In a Cucumber Cropmentioning

confidence: 96%

“…This regime is based on the ability of plants to tolerate temperature fluctuations around an optimum, provided that the average temperature over a period of one to several days is respected (Körner and Challa, 2003). TI has been studied for decades in different conditions and on various crops.…”

Section: A Double Luxous Screen In a Cucumber Cropmentioning

confidence: 99%

Sensible use of primary energy in organic greenhouse production

Stanghellini¹,

Baptista²,

Eriksson³

et al. 2016

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AcknowledgementThis brochure is based upon work from COST Action FA1105 BioGreenhouse, supported by COST (European Cooperation in Science and Technology). The authors wish to thank many colleagues for their contribution to this brochure and Ms. José Frederiks (Wageningen UR Greenhouse Horticulture) for processing layout and printing.Link to the Action: http://www.cost.eu/COST_Actions/fa/FA1105 and: http://www.biogreenhouse.org/ Correct citation of this document:Stanghellini, C., Baptista, F., Eriksson, E., Gilli, C., Giuffrida , F., Kempkes, F., Muñoz, P., Stepowska, A. , Montero, DisclaimerThe information in this booklet is based on the expert opinions of the various authors. Neither they, nor their employers, can accept any responsibility for loss or damage occurring as a result of following the information contained in this booklet. Action on the same subject. Mid 2011 the proposal "Towards a sustainable and productive EU organic greenhouse horticulture", in short, BioGreenhouse, was submitted.At the end of 2011 COST approved this proposal as COST Action FA1105 (see http://www.cost.eu/COST_ Actions/fa/FA1105 and www.biogreenhouse.org), which builds a network of experts working in the field of organic protected horticulture and aims to develop and to disseminate through coordinated international efforts, knowledge for new and improved production strategies, methods and technologies to support sustainable and productive organic greenhouse/protected horticulture in the EU. In total 27 participating COST countries and two COST Neighbouring countries took part in the Action.This Action offered the framework and funds for experts of the participating countries to meet and to work together in Working Groups concerning the objectives of the Action. The objectives related to climate and energy management where: an inventory of the use of fossil energy in the present organic greenhouse horticulture;to develop guidelines for the reduction of the use of primary energy in different regions; to join available information about reduction of energy use and improvement of productivity; and to evaluate the feasibility of substitutes of fossil energy.Nine experts from different regions worked together on this topic. They have addressed their task with commitment, by reviewing the regulations as they exist on energy use for heating and humidity control in the different regions in Europe; presenting strategies for reduction of energy requirement and to increase the productivity of energy; by reviewing the indirect use of energy and the options for replacement of fossil energy by renewable energy.Together they realised this booklet:"Sensible use of primary energy in organic greenhouse production" I believe this booklet will prove a unique source of information for all people and institutions involved in research in organic protected horticulture; for researchers, students, teachers, consultants and suppliers. This booklet could also serve also a starting point for developing strategies for a climate-neutral organic greenhouse ho...

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“…Humidity affects growth of greenhouse crops mainly through its impact on leaf size and light interception rather than through a direct impact on photosynthesis by increasing the stomata conductance at low VPD (Vapor this sense, programmable Logic Devices (PLDs) present as a good option for the technology development and implementation, because PLDs allow fast development of prototypes and the design of complex hardware systems using FPGAs (Field Programmable Gate Arrays) and Complex Programmable Logic Devices [9][10][11]. Real-time monitoring provides reliable, timely information of crop and soil status, important in taking decisions for crop production improvement [12][13][14][15]. Evaluation of agricultural production systems is a time consuming and difficult process because it means performing visits to selected crop fields to be able to measure and register certain physical, chemical and biological characteristics of the cultivated areas [16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Field Programmable Gate Array System for IoT Applications

Elmedany¹

2016

IJCNT

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Internet of Things (IoT) becomes an attractive field of research in the last decade. The main objective of IoT is enabling the integration and interconnection of the physical world and the cyber space. The aim of such space is telecommunications of the online world of computer networks and the Internet. The recent advances in sensors network and embedded systems have helped in the development and realization of Internet of Things. In order to provide adapted services to the users, such spaces should operate in a proactive manner and according to the current context. A Field Programmable Gate Array (FPGA) is a programmable chip designed to be configured after manufacturing by a designer or a customer using special computer interface hardware tools. The FPGA configuration is generally specified using a Hardware Description Language (HDL), there are many applications nowadays that are using FPGA-based design as the main controller instead of using ASICs (Application Specific Integrated circuits) design. This paper presents the hardware implementation of an FPGA (Field Programmable Gate Array) based design for IoT (Internet of Things) applications. The main contribution in this paper is to introduce a cost effective design to be used for the applications of IoT, the FPGA based design has been described using VHDL (VHSIC Hardware Description Language), simulated using Xilinx ISE 14.7 software tools, and then implemented on Xilinx Virtex-7 FPGA VC707 Evaluation platform, targeting xc7vx485t-2ffg1761 device.

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Design for an improved temperature integration concept in greenhouse cultivation

Cited by 52 publications

References 20 publications

Innovative Technologies for an Efficient Use of Energy

Innovative Technologies for an Efficient Use of Energy

Sensible use of primary energy in organic greenhouse production

Field Programmable Gate Array System for IoT Applications

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