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Implementation of Virtual Sensors for Monitoring Temperature in Greenhouses Using CFD and Control

Cesar Guzmán, José Carrera, Héctor Durán, Javier Berumen, Arturo Ortiz, Omar Guirette, Angélica Arroyo, Jorge Brizuela, Fabio Gómez, Andrés Blanco, Héctor Azcaray, Marlen Hernández
2018 Sensors  
This study has demonstrated, for the first time, that CFD analysis and a control strategy can be combined to obtain system models for monitoring the temperature in greenhouses.  ...  This paper proposes a new approach for model-based virtual sensor development using computational fluid dynamics (CFD) and control.  ...  To date, research has focused on physical sensors and CFD for monitoring the temperature in greenhouses, but virtual sensing has not been investigated in detail.  ... 
doi:10.3390/s19010060 fatcat:dlzvcrop4rh23hustv3igi76nm

Evaluation of thermal behavior for an asymmetric greenhouse by means of dynamic simulations

Ervin Alvarez- Sánchez, Gustavo Leyva-Retureta, Edgar Portilla-Flores, Andres López-Velázquez
2014 Dyna  
In this paper is presented the design of an asymmetric greenhouse, with a simulation and evaluation of its microclimate by means of DesignBuilder®.  ...  Three configurations of this asymmetric greenhouse are evaluated in order to analyze and compare their internal gains.  ...  Advanced systems monitor these variables using wireless sensor networks that consider humidity, temperature, light, and volumetric water content in the soil.  ... 
doi:10.15446/dyna.v81n188.41338 fatcat:3bbf5fhlkbe77gxanbbrkroqqa

INNOVATION IN GREENHOUSE ENGINEERING

G. Giacomelli, N. Castilla, E. van Henten, D. Mears, S. Sase
2008 Acta Horticulturae  
Innovations in greenhouse engineering are technical developments which help evolve the state-of-the-art in CEA (Controlled Environment Agriculture).  ...  For this overview of innovation in greenhouse engineering a list of influential factors, or "driving forces" affecting the development, application, evolution and acceptance of greenhouse systems have  ...  Murat Kacira for use of their slides for the oral presentation.  ... 
doi:10.17660/actahortic.2008.801.3 fatcat:kxbhnx5b7fhijhifepljrlzfhq

DESIGN AND CONSTRUCTION OF A PROTOTYPE SOLAR UPDRAFT CHIMNEY IN ASWAN/EGYPT

Reinhard Harte, Markus Tschersich, Rüdiger Höffer, Tarek Mekhail
2017 Acta Polytechnica  
A Structural Health Monitoring (SHM), framework for continuous monitoring, is implemented on the solar tower.  ...  Moreover, a CFD code is used to analyse the temperature and velocity distribution inside the collector, turbine and chimney at different operating conditions.  ...  Acknowledgements All joint project partners want to express their gratitude to the Federal Ministry of Education and Research (BMBF), the Science and Technology Development Fund (STDF) of Egypt and the  ... 
doi:10.14311/ap.2017.57.0167 fatcat:m2543zfwjzecto4azbvjjvxvbm

Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping in Tropical and Subtropical Countries

Gloria Alexandra Ortiz Rocha, Maria Angelica Pichimata, Edwin Villagran
2021 Sustainability  
This phenomenon has been widely studied in different types of structures using computational fluid dynamics (CFD) simulation.  ...  The use of protected agriculture structures in tropical and subtropical countries is the main alternative for intensification of agricultural production selected by producers.  ...  Acknowledgments: The authors would like to thank the Corporación Colombiana de Investigación Agropecuaria-AGROSAVIA for the technical support in the execution of this research.  ... 
doi:10.3390/su131810433 fatcat:wf6646c5knd2ldxyjepua7spxi

Energy Savings Potential in Using Cold-shelves Innovation for Multi-deck Open Front Refrigerated Cabinets

Konstantinos M. Tsamos, Hassan Mroue, Jining Sun, Savvas A Tassou, Nobby Nicholls, Graham Smith
2019 Energy Procedia  
The main scope of this paper is to assess the feasibility of using the heat demand -outdoor temperature function for heat demand forecast.  ...  District heating networks are commonly addressed in the literature as one of the most effective solutions for decreasing the greenhouse gas emissions from the building sector.  ...  The authors wish to acknowledge the support received from Brunel University London and the RCUK Centre for Sustainable Energy use in Food Chains (CSEF).  ... 
doi:10.1016/j.egypro.2019.02.094 fatcat:deavhyhecngt7akdd5ke7rgnuq

A Smart Campus' Digital Twin for Sustainable Comfort Monitoring

Agustín Zaballos, Alan Briones, Alba Massa, Pol Centelles, Víctor Caballero
2020 Sustainability  
This paper proposes a SC concept to investigate the integration of building information modeling tools with Internet of Things- (IoT)-based wireless sensor networks in the fields of environmental monitoring  ...  Interdisciplinary cross-cultural and cross-organizational research offers great opportunities for innovative breakthroughs in the field of smart cities, yet it also presents organizational and knowledge  ...  energy consumption and the implementation of sensor technology for accurate reporting. (2) Healthy campus, to monitor and promote the level of comfort by tracking and recording the status of the campus  ... 
doi:10.3390/su12219196 fatcat:nz3mawg4sjcbvdphdp6zbwfkxu

Convective heat and mass exchange predictions at leaf surfaces: Applications, methods and perspectives

Thijs Defraeye, Pieter Verboven, Quang Tri Ho, Bart Nicolai
2013 Computers and Electronics in Agriculture  
The majority of the methods used are however sensor-based, using real, artificial but also virtual leaf sensors.  ...  For experimental research in the field or in the laboratory (e.g., wind tunnel), special attention is given here to the sensors used, namely real and artificial leaves.  ...  These sponsors had no involvement in: the study design, the collection, analysis and interpretation of data; the writing of the manuscript; and the decision to submit the manuscript for publication.  ... 
doi:10.1016/j.compag.2013.05.008 fatcat:i5dlqwvj25gaxnkxmdcbup5osu

High-Resolution CFD and In-Situ Monitoring Based Validation of an Industrial Passive Air Conduction System (PACS)

Ádám László Katona, Huang Xuan, Sara Elhadad, István Kistelegdi, István Háber
2020 Energies  
The current study carries out a complex validation of the design and the used numerical methods to give general design rules for further PACS design and support following investigations, e.g., occupant  ...  values, resulting in a good prediction for aerodynamic characterization of buildings, i.e., passive ventilation air exchange rate.  ...  Acknowledgments: This paper is supported by the National Natural Science Foundation of China (Project number: 51308332). Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/en13123157 fatcat:5ei2qkbaybdehf4kfljy3u7wie

Thermal-Aware Scheduling in Green Data Centers

Muhammad Tayyab Chaudhry, Teck Chaw Ling, Atif Manzoor, Syed Asad Hussain, Jongwon Kim
2015 ACM Computing Surveys  
Servers in data centers require a constant supply of cold air from on-site cooling mechanisms for reliability.  ...  A survey is presented henceforth of thermal-ware scheduling and associated techniques for green data centers.  ...  The use of thermal sensors embedded in microprocessors is helpful since these sensors eliminate manual monitoring and their use is the only option to have real-time temperature data in the case of microprocessors  ... 
doi:10.1145/2678278 fatcat:5dura2qnujbvbdfi3f3oimkeiu

Recent Advances in Reducing Food Losses in the Supply Chain of Fresh Agricultural Produce

Daniel I. Onwude, Guangnan Chen, Nnanna Eke-emezie, Abraham Kabutey, Alfadhl Yahya Khaled, Barbara Sturm
2020 Processes  
We also identified the Internet of Things (IoT) and virtual representation models of a particular fresh produce (digital twins) as emerging technologies that can help monitor and control the uncharted  ...  This study gives promising insight towards the use of advanced technologies in reducing losses in the postharvest supply chain of fruits and vegetables.  ...  IoT has become a very important tool in monitoring and controlling the process conditions of food, allowing the controllers to implement proper decisions.  ... 
doi:10.3390/pr8111431 fatcat:i6ydfwhsfbfklcxfe67tmfhhne

Optimal Control Method of Variable Air Volume Terminal Unit System

Hyo-Jun Kim, Young-Hum Cho
2021 Energies  
to improve the existing control methods, reset the set value using a mathematical model, and add a monitoring sensor for the application of control methods.  ...  The mathematical model used in the study of VAV terminal unit control methods was used to derive set values for minimum air volume, supply temperature, ventilation requirements, and indoor comfort.  ...  Data Availability Statement: No new data were created or analyzed in this study. Data sharing is not applicable to this article. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/en14227527 fatcat:cq3wqshjg5dkbpqigopmu2ecve

Progress in high-temperature electrolysis for hydrogen production using planar SOFC technology

J. Stephen Herring, James E. O'Brien, Carl M. Stoots, G.L. Hawkes, Joseph J. Hartvigsen, Mehrdad Shahnam
2007 International journal of hydrogen energy  
A research program is under way at the Idaho National Laboratory to assess the performance of solid-oxide cells operating in the steam electrolysis mode for hydrogen production over a temperature range  ...  Mass, momentum, energy, and species conservation and transport are provided via the core features of the commercial CFD code FLUENT 1 .  ...  ACKNOWLEDGEMENTS This work was supported by the US Department of Energy, Office of Nuclear Energy, Nuclear Hydrogen Initiative Program.  ... 
doi:10.1016/j.ijhydene.2006.06.061 fatcat:bectutliafbjxbzx4bncvbslpa

Automated Microclimate Regulation in Agricultural Facilities Using the Air Curtain System

Nikolay Kiktev, Taras Lendiel, Viktor Vasilenkov, Oksana Kapralуuk, Taras Hutsol, Szymon Glowacki, Maciej Kuboń, Zbigniew Kowalczyk
2021 Sensors  
One of the deciding steps in improving the parameters of microclimate, i.e., temperature and humidity in agricultural facilities, particularly in livestock buildings, is to develop reliable and highly  ...  Furthermore, the use of an automated digital control system maintains an optimal microclimate in the building.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s21248182 pmid:34960276 pmcid:PMC8706943 fatcat:apo7zl6l3vfy7egpnz3xp3dm34

Development of a Real-Time Virtual Nitric Oxide Sensor for Light-Duty Diesel Engines

Seungha Lee, Youngbok Lee, Gyujin Kim, Kyoungdoug Min
2017 Energies  
The implemented model was suitable for both NO estimation in the WLTC and NO emission control during engine operation.  ...  Although this replacement is challenging, a virtual NO x sensor can be helpful in determining physical NO x sensor malfunction or controlling after-treatment devices [11] .  ...  This research was supported by the Hyundai Motor Group and the Seoul national university institute of advanced machines and design (SNU IAMD).  ... 
doi:10.3390/en10030284 fatcat:vjgkibkcgje4jcspv3ouvvgbnu
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