Heat and mass transfer in infrared assisted heat pump drying of purple yam

• Autorzy: Kien Pham Van , Tan Nguyen Thanh , Nghia Pham Huu , Nguyen Van Tinh , Duc Le Anh , Hay Nguyen

Identyfikatory

DOI

10.2478/agriceng-2024-0006

Warianty tytułu

PL

Wymiana ciepła i masy w suszeniu pochrzynu skrzydlatego za pomocą pompy ciepła wspomaganej podczerwienią

• Języki publikacji: EN

Abstrakty

EN

This study focused on an engineering problem of heat and mass transfer in infrared (IR) assisted heat pump (HP) drying of purple yam including both a drying experiment and theory of heat and mass transfer mathematical equations. The experimental drying of yam by the IR assisted HP drying method was performed to evaluate the effect of IR power on drying rate and heating rate. The input drying parameters included the drying air temperature of 50°C, drying air velocity of 2.5 mˑs-1 and IR power of 0, 300 and 350 W, in which, at the IR power of 0 W, the HPonly drying mode was performed. The experimental drying results showed that the IR assisted HP drying method could improve the drying rate and heating rate as compared to HP-only drying. At the IR power of 350 W, the drying time was the shortest (150 minutes), followed by the IR power of 300 W (210 minutes) and HP-only drying (300 minutes). The IR assisted HP drying obtained the high heating rate as the time required for the drying material to reach the drying temperature was about 35 and 25 minutes corresponding to the IR power of 300 and 350 W. While in HP-only drying, it took about 270 minutes for the drying material’s temperature to reach nearly the drying air temperature value. Besides, the comparison between the predicted data by numerically solving the heat and mass transfer equations and experimental drying data was also conducted. The analysis results indicated that the predicted data could be used to predict the experimental data accurately. The theoretical results of heat and mass transfer in the IR assisted HP drying process as well as experimental drying results would be the basis for improving the IR assisted HP drying equipment to achieve the drying efficiency including the drying rate, quality of dried products, and energy consumption.

PL

Niniejsze opracowanie dotyczy problem wymiany ciepła i masy podczas suszenia pochrzynu skrzydlatego za pomocą pompy ciepła wspomaganej podczerwienią, w tym doświadczenia suszarniczego oraz teorii równań matematycznych wymiany ciepła i masy. Suszenie eksperymentalne pochrzynu za pomocą metody wspomaganej podczerwienią przeprowadzono w celu oceny wpływu mocy podczerwieni na szybkość suszenia i podgrzewania. Wejściowe parametry suszenia to temperatura powietrza suszenia wynosząca 50°C, prędkość temperatury suszenia 2,5 mˑs-1 oraz moc podczerwieni 0, 300 oraz 350 W, przy których, przy mocy podczerwieni wynoszącej 0W, przeprowadzono wyłącznie suszenie za pomocą pompy ciepła. Wyniki suszenia eksperymentalnego wykazały, że metoda suszenia wspomaganego podczerwienią mogła usprawnić prędkość suszenia i ogrzewania w porównaniu do metody wykorzystującej jedynie pompę ciepła. Przy mocy podczerwieni wynoszącej 350 W, czas suszenia był najkrótszy (150 min.), przy mocy 300 W (210 min.) oraz przy suszeniu pompą ciepła (300 min.). Suszenie wspomagane podczerwienią uzyskało wysokie tempo podgrzewania, ponieważ czas jaki materiał suszony potrzebował do osiągnięcia temperatury suszenia wynosił około 35 i 25 min. odpowiednio przy mocy podczerwieni wynoszącej 300 i 350 W. Podczas gdy, w suszeniu za pomocą pompy ciepła czas ten wynosił około 270 min. do momentu uzyskania przez materiał suszony temperatury suszącego powietrza. Ponadto, dokonano porównania danych przewidywanych przez rozwiązanie równań wymiany ciepła i masy z danymi suszenia eksperymentalnego. Wyniki teoretyczne mogłyby stanowić podstawę ulepszenia sprzętu suszącego wspomaganego podczerwienią w celu uzyskania wydajności suszenia w tym prędkości suszenia, jakości suszonych produktów oraz zużycia energii.

Słowa kluczowe

EN

drying rate; heating rate; drying air temperature; drying air velocity; IR power

PL

prędkość suszenia; prędkość podgrzewania; temperatura powietrza suszącego; prędkość suszącego powietrza; moc podczerwieni

• Wydawca: Polskie Towarzystwo Inżynierii Rolniczej
• Czasopismo: Agricultural Engineering
• Rocznik: 2024
• Tom: Vol. 28, No. 1
• Strony: 71--84
• Opis fizyczny: Bibliogr. 45 poz., rys., tab.

Twórcy

autor

Kien Pham Van

• Faculty of Automotive Engineering, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam

autor

Tan Nguyen Thanh

• Faculty of Automotive Engineering, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam

autor

Nghia Pham Huu

• Faculty of Automotive Engineering, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam

autor

Nguyen Van Tinh

• Faculty of Engineering and Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam

autor

Duc Le Anh

• Nong Lam University, Ho Chi Minh City, Vietnam

autor

Hay Nguyen

• Nong Lam University, Ho Chi Minh City, Vietnam

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