Effect of plastic tunnel equipment on its thermal balance components

• Autorzy: Kurpaska S.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of research conducted in a standard plastic tunnel equipped with thermal screens measuring 144 m2 . During the experiment the thermal screens in the tunnel were either in a folded or unfolded position (both during the radiation weather and at night), whereas vents were closed. Parameters of the ambient climate (the temperature, wind velocity, air humidity and solar radiation intensity) were measured during the experiment, as well as the parameters of the microclimate inside the objects (the temperature and air humidity).Thermal balance including: the change of heat accumulated inside the object, heat gains from the substratum (through radiation and penetration), heat gains from solar radiation and the heat flux loss were formulated for the discussed cases. In result of the analysis the differences of internal temperature were stated for the object with and without thermal screens. It was found that for the identical values of the ambient climate parameters the temperature inside the object without the thermal screen was c.a. 4.0% higher than in the object equipped with the thermal screen. The thermal transmittance value through the object casing was determined and the convert rate of solar radiation to heat causing increase in the internal temperature in the objects both with and without thermal screens.

Słowa kluczowe

EN

plastic tunnel; thermal screen; thermal transmittance coefficient; convert rate of solar radiation

• Wydawca: Wydawnictwo Uniwersytetu Warmińsko-Mazurskiego w Olsztynie
• Czasopismo: Technical Sciences / University of Warmia and Mazury in Olsztyn
• Rocznik: 2016
• Tom: nr 19(4)
• Strony: 313--324
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Kurpaska S.

• Instytut Inżynierii Rolniczej i Informatyki, Uniwersytet Rolniczy im. Hugona Kołłątaja, ul. Balicka 116B, 30-149 Kraków, phone: [phone]

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.