Browsing by Subject "MICROCLIMATE"
Now showing items 1-11 of 11
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Air temperature regime in a forced ventilated greenhouse with rose crop
(2005)The use of forced ventilation for greenhouse cooling and air humidity regulation purposes has been expanded around Mediterranean area. The aim of the present study was the experimental investigation of the variables, as ... -
Convective and ventilation transfers in greenhouses, part 2: Determination of the distributed greenhouse climate
(2002)In this paper, the characterisation and modelling of the most relevant convective transfers contributing to the description of the distributed greenhouse climate are studied in detail. After a brief review of the equations ... -
Effect of misting on transpiration and conductances of a greenhouse rose canopy
(2001)The influence of greenhouse humidity control on the transpiration rate (lambdaE(c)). sensible heat flux (H-c) and bulk stomatal conductance (g(c)) of a soilless rose canopy (Rosa hybrida. cv. First Red) was studied in a ... -
Effects of cover optical properties on screenhouse radiative environment and sweet pepper productivity
(2014)The effects of cover optical properties on screenhouse radiative environment and sweet pepper productivity were investigated in a Mediterranean climate (Eastern Greece) under three covering materials (i) a pearl insect-proof ... -
Influence of leaf area index on canopy energy partitioning and greenhouse cooling requirements
(2002)Canopy transpiration, which represents the major cooling process in greenhouses, depends strongly on the crop leaf area index I-LA. In this paper, the influence Of I-LA on canopy and greenhouse energy balance of a soilless ... -
INFRARED HEATING OF GREENHOUSES REVISITED: AN EXPERIMENTAL AND MODELING STUDY
(2009)The potential advantages of night-time heating of greenhouses by modern infrared (IR) radiative sources, instead of forced hot air, are examined experimentally and theoretically. Measurements of indoor and outdoor conditions ... -
Leaf boundary layer conductance in ventilated greenhouses: An experimental approach
(2007)Improving the design, control and management of greenhouse ventilation systems requires a better insight into the coupling and feedback mechanisms between the crop, the internal atmosphere and the outside atmosphere. The ... -
Predicting reference evapotranspiration for screenhouse-grown crops
(2014)The purpose of the study is to estimate the reference evapotranspiration of screenhouse-grown crops (ETo,in) from routine outside weather data and main screenhouse characteristics. To this aim, all the microclimatic variables ... -
Response of an eggplant crop grown under Mediterranean summer conditions to greenhouse fog cooling
(2009)The effects of greenhouse cooling using a high-pressure fog system on greenhouse microclimate and on eggplant (Solanum melongena) crop response were studied at the coastal area of western Greece. Measurements were carried ... -
A simple model for ventilation rate determination in screenhouses
(2015)The objective of this work was to study and model the ventilation rate in screenhouses. Thus, microclimate variables and crop transpiration as well as the air velocity were measured in three screenhouses covered by different ... -
Temperature gradients in a partially shaded large greenhouse equipped with evaporative cooling pads
(2003)The main drawback of greenhouse evaporative cooling systems based on cooling pads and extracting fans is the thermal gradient developed along the direction of the airflow. High-temperature gradients of this type can markedly ...