Design and simulation of a greenhouse in a computational environment (ANSYS/FLUENT) and an automatic control system in a LABVIEW environment

Kavga, Angeliki; Thomopoulos, Vasileios; Pischinas, Evangelos; Tsipianitis, Dimitris; Nikolakopoulos, Pantelis

doi:10.1016/j.simpat.2023.102837

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…The program implementation of this function was designed by a state machine. According to the pre-set commands, the program is divided into five different states, including initialization, waiting, bundling parameters, generation and stop [20]. The specific program block diagram is shown in Figure 12.…”

Section: Historical Data Extractionmentioning

confidence: 99%

Development of Static Test Equipment and a System for Lever-Loaded Air Springs

Zhao,

Zhang,

et al. 2024

Actuators

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In light of the heavy load applied by traditional air spring test equipment and its complex structural system design, a lever-type torque loading air spring test system is designed. It adopts the principle of Chinese scales to apply the load on the air spring in the form of proportional amplification, which can apply a simulated load on the air spring of 500–800 kg, using the vertical sliding shaft as the transverse limit to make the air spring elongate and compress by 280 mm in the longitudinal direction. The measurement and control system of the test equipment is then developed based on the LabVIEW platform, and the required sensors are selected and installed. The system can achieve real-time data acquisition of the air pressure, load, height and other parameters of the air spring and air spring charging and discharging control. Following the debugging of the function of the test equipment, the function of each subsystem is normal and able to meet the requirements of air spring characteristic and pressure tightness tests. For small spaces, such as laboratories, by reducing the installation of hydraulic and other oil source systems, avoiding the use of large mass blocks to simulate the loading of air spring loads and optimizing the complex installation and debugging process, this miniaturized design for air spring test equipment has benefits for practical applications.

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Section: Historical Data Extractionmentioning

confidence: 99%

Development of Static Test Equipment and a System for Lever-Loaded Air Springs

Zhao,

Zhang,

et al. 2024

Actuators

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“…17, No. 3, Desember 2023ISSN 1978-1067 (Kavga, Thomopoulos, Pischinas, Tsipianitis, & Nikolakopoulos, 2023). Selain itu jenis bahan yang digunakan sebagai material greenhouse juga berpengaruh pada ketidakakuratan sistem kendali karena beberapa material penyusun memungkinkan lebih banyak cahaya yang masuk yang kemudian mempengaruhi suhu dan tingkat kelembaban udara (Shamshiri, 2013).…”

Section: Hasil Dan Pembahasanunclassified

Perancangan dan Uji Kinerja Sistem Kendali Iklim Mikro di Smart Greenhouse Politeknik Pembangunan Pertanian Bogor

Priyonggo,

Wardani,

Ichniarsyah

et al. 2023

Tekno. J. Ind. Tek.. Pert.

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Greenhouse merupakan inovasi teknologi untuk mengontrol faktor iklim yang berpengaruh pada pertumbuhan tanaman. Kondisi tanaman di greenhouse dapat dipantau secara realtime dengan penerapan teknologi Internet of Things. Pengembangan teknologi kendali dalam greenhouse sudah banyak dikembangkan di Indonesia. Salah satu faktor yang mempengaruhi iklim mikro dalam greenhouse adalah suhu lingkungan. Penelitian bertujuan untuk merancang bangun dan menguji kinerja sistem kendali iklim mikro di greenhouse. Sistem kendali iklim mikro tersusun dari DHT22 sebagai sensor, ESP32 dan Atmega2560 sebagai mikrokontroler dan exhaust fan sebagai aktuator. Sistem kendali yang dirancang mengendalikan suhu lingkungan tidak lebih dari 38 o C dengan menggunakan sembilan sensor yang dipasang di dalam greenhouse. Pada penelitian ini pengujian sistem kendali berupa uji ketidakakuratan sistem dan uji efisiensi penggunaan listrik. Hasil pengujian menunjukkan bahwa nilai ketidakakuratan sebesar 12% dan efisiensi penggunaan listrik sebesar 39.02%. Secara keseluruhan dapat disimpulkan sistem kendali iklim mikro yang dirancang dapat berjalan dengan baik dan dapat digunakan sebagai alternatif teknologi kendali iklim mikro.

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“…This procedure was carried out ethically and transparently, ensuring that participants fully understood the nature of the research. The study strictly adhered to ethical standards, thereby ensuring the integrity and validity of the study on the energy performance of the system in question [13].…”

Section: Data Colection Technicquesmentioning

confidence: 99%

“…A 3D modeling is carried out over a period of 4 weeks, considering temperature variations in the subsurface throughout the day and weather conditions. To expedite the process, an evaluation is conducted every 24 hours [13]. Mesh refinement is applied to the entire greenhouse body, including walls, floor, and roof, as these areas are more exposed to temperature variations from the external environment and the ground.…”

Section: Figure 6 Details the Followingmentioning

confidence: 99%

Desempeño energético de un sistema de bomba de calor geotérmico acoplado a un invernadero

Cepeda-Guerron,

Chiriboga,

Carvajal

2023

CienciAmérica

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INTRODUCTION. The research focuses on designing and implementing a geothermal heat pump adapted to a 470 m2 greenhouse in the Andean region. OBJECTIVE. The goal is to maintain a temperature of 15 °C at night and 30 °C during the day, replacing conventional energy sources such as LPG and contributing to the sustainability and efficiency of food production in challenging climatic conditions. METHOD. We estimated the energy potential of solar and geothermal sources through precise measurements, which were compared to theoretical models. Subsequently, we calculated the appropriate size for the geothermal heat pump using the vapor compression cycle from the greenhouse's energy balance. Finally, we considered critical variables such as temperature and relative humidity to assess the energy efficiency of a geothermal heat pump. Prediction intervals were determined for the relevant variables to investigate values outside statistical control, and the construction of a heat map revealed heat transfer and thermal behavior in the greenhouse. RESULTS. The results demonstrated the impact of climatic conditions on the performance of the geothermal heat pump. Out of the 3169 analyzed data points, 7% fell outside the prediction intervals. CONCLUSIONS. This analysis underscores the critical influence of the environment on the energy efficiency of greenhouse cooling systems in the Andean region, suggesting the need for more efficient energy management strategies based on environmental conditions.

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Design and simulation of a greenhouse in a computational environment (ANSYS/FLUENT) and an automatic control system in a LABVIEW environment

Cited by 10 publications

References 24 publications

Development of Static Test Equipment and a System for Lever-Loaded Air Springs

Development of Static Test Equipment and a System for Lever-Loaded Air Springs

Perancangan dan Uji Kinerja Sistem Kendali Iklim Mikro di Smart Greenhouse Politeknik Pembangunan Pertanian Bogor

Desempeño energético de un sistema de bomba de calor geotérmico acoplado a un invernadero

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