کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10286201 504169 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Air temperature regime in a forced ventilated greenhouse with rose crop
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Air temperature regime in a forced ventilated greenhouse with rose crop
چکیده انگلیسی
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 well as their interaction, affecting the air temperature in a fan-ventilated greenhouse. On this purpose, measurements concerning both the greenhouse ventilation rate and climate variables inside and outside the greenhouse (air temperature and solar radiation inside and outside the greenhouse and outside wind speed and direction), were carried out in a multi-span fan-ventilated greenhouse. The greenhouse was cultivated with a rose crop and located near Karditsa, central Greece. The results showed that the difference between inside and outside air temperature was strongly related to the ventilation rate as well as to the incoming solar radiation. This finding allowed suggesting a simplified model of the greenhouse energy balance and finally an equation relating the greenhouse air temperature to the outside climate variables (air temperature, solar radiation and wind speed) and the greenhouse characteristics (cover transmission and ventilation rate). The calibration of the model gave satisfactory results and showed that it could be incorporated in algorithms used for greenhouse climate control and also that it could be used as a functional tool for more accurate estimations of ventilation needs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy and Buildings - Volume 37, Issue 8, August 2005, Pages 807-812
نویسندگان
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