Türk Tarım ve Doğa Bilimleri Dergisi

Yazarlar: Sedat BOYACI

Konular:-

DOI:10.30910/turkjans.515349

Anahtar Kelimeler:Greenhouse,Cooling,Sensible heat,Latent heat,Bowratio

Özet: In this study, it was aimed to determine the effect of fan-pad cooling system on sensible and latent heat transfer and system efficiency when high temperature values in greenhouses do not enable plant cultivation. As a result of measurements carried out between 08:00 and 16:00 inside and outside the greenhouse, sensible heat transfer ranged between 123.65 and 809.31 W m-2 and its mean value was calculated as 394.26 W m-2. In the greenhouse, the sensible heat transfer was increased based on the temperature difference between the external environment and the greenhouse environment. The latent heat transfer ranged between the values of -103.86 and -1430.81 W m-2 and its mean value was calculated as -696.41 W m-2. The Bowen rate in greenhouse ranged between -0.35 and -1.19 the average Bowen rate was calculated as -0.67. The maximum value of the system efficiency was found 73% and the highest value of the external temperature difference was found 12.85 °C. As a result of the study, it was determined that the latent heat transfer was higher than the sensible heat transfer in the greenhouse due to the evaporative effect of the fan-pad cooling system used in the greenhouse during the periods when the temperatures rise and it creates the indoor temperature values suitable for the plant cultivation.

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