Đinh Vương Hùng*, Nguyễn Xuân Trung**. Một số kết quả nghiên cứu sấy tỏi bằng hệ thống sấy dùng năng lượng mặt trời kiểu hỗn hợp đối lưu tự nhiên. Tạp chí Công nghiệp nông thôn, số 2, trang 12-16.
* Trường Đại học Nông lâm, Đại học Huế
** Trường Trung học Giao thông vận tải Huế
This paper presents the design, construction and performance of a mixed-mode solar dryer with turboventilator for galic preservation. In the dryer, the heated air from a separate solar collector is passed through a grain bed, and at the same time, the drying cabinet absorbs solar energy directly through the transparent roof. The results obtained during the test period revealed that the temperatures inside the dryer and solar collector were much higher than the ambient temperature during most hours of the day-light. The temperature rise inside the drying cabinet was up to 32% for about three hours immediately after 12.00h (noon). The drying rate and system efficiency were 0.62 kg/h and 57.5% respectively. The rapid rate of drying in the dryer reveals its ability to dry food items reasonably rapidly to a safe moisture level.
Keywords: garlic dryer, mixed-mode, performance evaluation, solar energy, turboventilator.