Computational Modeling of the Thermal Behavior of a Greenhouse

The need for production of all kinds crops in high quantities and over the entire year makes agricultural sector one major energy consumers. optimization this consumption is essential to guarantee its sustainability. implementation greenhouses a strategy that allows assurance needs possesses large potential process. This article studies different greenhouse structures by computational simulation using EnergyPlus DesignBuilder. First, comparison was performed between results measured values from prototype at operating conditions. Overall, shows tool can provide reasonable prediction thermal behavior, depending on differences weather data modeled observed. An outdoor air temperature difference 16 °C cause about 10 predicted inside greenhouse. Subsequently, selected set case developed order quantify their influence performance greenhouse, namely: configuration orientation; variation indoor renewal; changes characteristics roof; effect mass walls; location show correct orientation, together with polyethylene double cover 13 mm layer, granite wall 40 cm thickness north wall, variable airflow rate, may lead reduction 57%, if located Lisbon, or 43%, it Ostersund, during harshest months heating season.