Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2023 - zeszyt 11

Effect of Outlet at the Bottom of the Drying Chamber on the Performance of Natural Convection Solar Dryers

Wpływ wylotu na dnie komory suszenia na wydajność suszarek słonecznych z konwekcją naturalną

10.15199/48.2023.11.26

nr katalogowy: 146212
10.15199/48.2023.11.26

Streszczenie

In a closed room, the air gets more humid when the drying process takes place. The increase in air humidity causes the drying rate to decrease. The humidity in the drying chamber needs to be lowered. This study aims to increase the drying rate by keeping the air moist in the drying chamber. The research was conducted by making four outlets at the bottom of the drying chamber. The function of the outlet is to remove the moist air in the drying chamber. Removing moist air occurs by natural convection due to differences in density. This research was carried out in 3 variations. Namely, the outlet is fully closed, half-closed, and fully open. The research was carried out in Makassar, South Sulawesi, Indonesia. The dried material is bananas. The drying process is carried out from 09.00 to 17.00 WIB. The result of this research is that the solar dryer's performance increases when the hole at the bottom of the drying chamber is fully open. On the other hand, the solar dryer's performance decreases when the hole at the bottom of the drying chamber is fully closed.

Abstract

W zamkniętym pomieszczeniu powietrze staje się bardziej wilgotne podczas procesu suszenia. Wzrost wilgotności powietrza powoduje zmniejszenie szybkości suszenia. Należy obniżyć wilgotność w komorze suszenia. Badanie to ma na celu zwiększenie szybkości suszenia poprzez utrzymywanie wilgotności powietrza w komorze suszenia. Badania przeprowadzono wykonując cztery wyloty w dnie komory suszenia. Zadaniem wylotu jest usuwanie wilgotnego powietrza z komory suszenia. Usuwanie wilgotnego powietrza odbywa się na drodze naturalnej konwekcji z powodu różnic w gęstości. Badanie to przeprowadzono w 3 wariantach. Mianowicie, wylot jest całkowicie zamknięty, półprzymknięty i całkowicie otwarty. Badania przeprowadzono w Makassar w południowym Sulawesi w Indonezji. Suszony materiał to banany. Proces suszenia odbywa się w godzinach od 09.00 do 17.00 WIB. Wynikiem tych badań jest to, że wydajność suszarki słonecznej wzrasta, gdy otwór w dnie komory suszenia jest całkowicie otwarty. Z drugiej strony wydajność suszarki słonecznej spada, gdy otwór w dnie komory suszenia jest całkowicie zamknięty.

Słowa kluczowe

Keywords

Bibliografia

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