Ground duct ventilation in greenhouses
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Inclou dades d'ús des de 2022
Cita com:
hdl:2117/87142
Tutor / directorVan den Engel, Peter
Tipus de documentProjecte/Treball Final de Carrera
Data2014
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
A greenhouse climate control system is simulated in MATLAB and Simulink. The model calculates for every 20
minutes the temperatures and energy consumption over a whole year. Ground ducts are used in order to save
energy which is stored in the ground when there is an excess of heat during the day. This energy is used when the
temperature is not high enough, generally in the early morning. Additionally, the ground ducts reduce the usage
of windows, due to better dehumidification and cooling. When the windows are closed, the produced CO2 will be
kept inside. Moreover, the circulation within the greenhouse improves. These combined effects not only
accelerate the growing of the plants but also improve their health. The calculation model includes water
condensation near the roof, walls and inside the ground ducts and also evaporation via the plants. In order to
reduce the complexity of the simulation, the system is partially limited to a 1‐dimensional system. After a
mathematical validation of the model, the simulation results are compared with data of measurements in a
greenhouse with ground ducts. Based on this validation the most optimal configuration of ground‐ducts is
predicted.
MatèriesGreenhouses -- Heating and ventilation, Ventilation -- Mathematical models, Hivernacles -- Calefacció i ventilació, Ventilació -- Models matemàtics
TitulacióENGINYERIA INDUSTRIAL (Pla 1994)
Fitxers | Descripció | Mida | Format | Visualitza |
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Guiu Riera Final Thesis.pdf | Report | 1,882Mb | Visualitza/Obre |