Πλοήγηση ανά Συγγραφέα "Bartzanas, T."
Αποτελέσματα 1-20 από 65
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Analysis of airflow through experimental rural buildings: Sensitivity to turbulence models
(2007)Full-scale experimental data and computational fluid dynamics (CFD) methods are used to determine the accuracy of four different turbulence models [standard k-ε, k-ε renormalisation group (RNG), k-ε realisable, Reynolds ... -
Aspects of CFD Modelling of a Fan and Pad Evaporative Cooling System in Greenhouses
(2008)A methodology approach to simulate, by means of computational fluid dynamics (CFD) tools, a greenhouse equipped with a fan and pad evaporative cooling system is presented. Using the main aspects of evaporative cooling ... -
ASSESSMENT OF A TYPICAL GREEK SHEEP BARN BASED ON POTENTIAL HEAT-STRESS OF DAIRY EWES
(2014)This article studied the potential seasonal heat-stress of dairy ewes housed in a typical naturally ventilated sheep barn located close to the east coast of central Greece. Heat stress was assessed using the Temperature ... -
Characterization and analysis of the effects of greenhouse climate control equipment on greenhouse microclimate and crop response
(2011)An overview of the recent scientific and technical advances on issues concerning the greenhouse microclimate, control and management in Mediterranean regions is presented and discussed. Special emphasis is given on the ... -
Classification of potential sheep heat-stress levels according to the prevailing meteorological conditions
(2015)Many researchers have found that physiology, welfare, health, and productivity of ruminants are significantly affected when they are exposed to heat-stress conditions. In such cases, heat-stress may also cause a reduction ... -
Computational fluid dynamics applications to improve crop production systems
(2013)Computational fluid dynamics (CFD), numerical analysis and simulation tools of fluid flow processes have emerged from the development stage and become nowadays a robust design tool. It is widely used to study various ... -
Convective heat transfer in a heated greenhouse tunnel
(2007)Convective transfers determine for a large part the micro-climate inside a greenhouse. These processes are very complicated because they combine free and forced convection modes, most often turbulent with very different ... -
Daily temperature optimisation in greenhouse by reinforcement learning
(2005)The goal of this study is to show the usefulness of reinforcement learning (RL) to solve a common greenhouse climate optimisation problem. The problem is to minimise the daily heating cost while achieving simultaneously ... -
Development and evaluation of a DSS for drainage management in semi-closed hydroponic systems
(2014)The recycling of greenhouse effluents in soilless cultivation systems is environment-friendly, since the waste of water and the disposal of nutrients to the environment is drastically reduced or even eliminated. However, ... -
Development of models to assess potential sheep heat-stress during heat waves
(2013)It is well documented that heat-stress burdens sheep welfare and productivity. It is expected that peak heat-stress levels are observed when high temperatures prevail, i.e. during heat waves. However, continuous measurements ... -
Dispersion of pesticides from a naturally ventilated greenhouse: A CFD approach
(2006)A methodology of application of a numerical technique in order to simulate the dispersion of pesticides from greenhouses is presented. The proposed simulation approach is based on preliminary calculations that concern the ... -
Effect of shading on greenhouse energy balance and crop transpiration
(2012)The purpose of this study was to investigate the effect of greenhouse shading and irrigation water salinity on greenhouse microclimate and energy balance and on crop transpiration and leaf photosynthesis. Experiments were ... -
Effect of two new cover materials on greenhouse energy consumption and cooling load
(2012)The aim of this work was to study the effects of a new polyethylene (PE) film with high reflectance and absorption in near infrared radiation (NIR-PE film) and of a PE film with low transmittance in infrared radiation IR ... -
Effect of vent arrangement on windward ventilation of a tunnel greenhouse
(2004)The effect of ventilation configuration of a tunnel greenhouse with crop on airflow and temperature patterns was numerically investigated using a commercial computational fluid dynamics (CFD) code. The numerical model was ... -
The effect of vent configuration and insect screens on greenhouse microclimate
(2005)The influence of insect screens and vent configurations on airflow and temperature patterns in an arched plastic covered greenhouse used for cultivating tomatoes was analysed using a commercial computational fluid dynamics ... -
Effect of vent opening and insect screens on greenhouse microclimate distribution
(2006)The objective of this work was to experimentally investigate the influence of vent type (side, roof or both) and of an anti-aphid insect screen on airflow and temperature distribution of a mono span greenhouse round arch ... -
Effect of Vent Openings and Insect Screens on Greenhouse Ventilation
(2006)The objective of this work was to experimentally investigate the influence of vent type (side, roof or both) and of an anti-aphid insect screen used to prevent insect intrusion on the ventilation rate of a round arch with ... -
Effects of anti-drip cover materials on microclimate and production of a hydroponic cucumber crop
(2008)Recent year's concerns about food safety, environmental pollution, worker's safety, resistance to chemicals and the need for rational use of energy stimulated extensive research concerning the development of alternative ... -
Effects of anti-drip polyethylene covering films on microclimate and crop production
(2012)One important issue for greenhouse producers to deal with is the management of high humidity levels during the cold period of the year. High level of humidity is a factor that directly affects the fruit yield and quality ... -
Effects on microclimate, crop production and quality of a tomato crop grown under shade nets
(2012)The effects of four shade nets with different colour transmission properties and shading intensities (two black nets with shading intensities of 40% and 49%, a green net with a shading intensity of 34%, and a mixed green ...